{"id":18483,"date":"2026-06-15T15:00:11","date_gmt":"2026-06-15T08:00:11","guid":{"rendered":"https:\/\/www.vietstock.org\/?p=18483"},"modified":"2026-06-15T11:11:53","modified_gmt":"2026-06-15T04:11:53","slug":"veterinary-medicines-livestock-safe-use","status":"publish","type":"post","link":"https:\/\/www.vietstock.org\/en\/tin-nganh\/veterinary-medicines-livestock-safe-use\/","title":{"rendered":"Veterinary Medicines in Livestock Production in 2026: Classification, Principles of Use, and Safety Notes"},"content":{"rendered":"<figure style=\"width: 856px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/06\/istockphoto-1413112250-612x612-1.jpg\" alt=\"Veterinarian checking livestock health at a pig farm\" width=\"866\" height=\"577\" \/><figcaption class=\"wp-caption-text\">Proper use of veterinary medicines helps protect animal health and support efficient livestock production.<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">Veterinary medicines are an important tool in managing herd and flock health, especially when farms need to prevent disease, support treatment, or control disease risks. This article is for reference only and does not replace diagnosis, prescriptions, or treatment guidance from a veterinarian.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Using veterinary medicines properly helps control disease, protect livestock, and maintain the quality of animal products. In contrast, using the wrong medicine, using the wrong dose, or failing to follow the withdrawal period may cause significant economic losses, increase the risk of antimicrobial resistance, and leave residues that affect food safety.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">In today\u2019s livestock production context, requirements related to food safety, traceability, and regulatory compliance are making it increasingly important to understand veterinary medicines correctly. This article provides a general knowledge foundation on classification, principles of use, and essential safety notes. It is suitable for both new livestock farmers and experienced farm owners who want to systematize their knowledge.<\/span><\/p>\n<h2><b>Quick Summary<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Veterinary medicines include many different groups: antibiotics, vaccines, antiparasitic medicines, disinfectants, digestive support products, and reproductive regulation products. Each group has its own indications and limitations.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The \u201c6 rights\u201d principle \u2014 the right medicine, right dose, right animal, right route, right timing, and right withdrawal period \u2014 is the minimum foundation for safe and effective use.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The withdrawal period must be strictly followed to reduce the risk of antibiotic residues in meat, eggs, and milk before animals are marketed or products are harvested.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Antimicrobial resistance may result from the overuse and misuse of antibiotics, causing losses in both treatment effectiveness and the ability to market livestock products.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Farmers need to understand the basic legal requirements related to banned medicines, restricted-use medicines, and the responsibility to keep records of medicine use.<\/span><\/li>\n<\/ul>\n<h2><b>What Are Veterinary Medicines and Why Are They Important in Modern Livestock Production?<\/b><\/h2>\n<h3><b>Definition of Veterinary Medicines Under Vietnamese Regulations and Practical Understanding<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Under Vietnamese veterinary regulations, veterinary medicines are products used for animals for the purpose of disease prevention, diagnosis, treatment, or regulating physiological functions. When citing the legal definition in an official article, editors should check the exact wording in the Law on Veterinary Medicine and current guiding documents.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">In daily production, farmers often understand veterinary medicines in a broader sense. This may include products such as vitamins, oral rehydration electrolytes, digestive enzymes, or disinfectants used for farm facilities. An important point to note is that many products used for livestock may not be classified as medicines in the legal sense, but they should still have a clear source\/origin and be used according to instructions.<\/span><\/p>\n<h3><b>The Role of Veterinary Medicines in Industrial Livestock Production and Smallholder Farms<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Veterinary medicines play a dual role in livestock production: prevention and treatment. In industrial-scale farming, medicines are integrated into a structured production process, with routine vaccination schedules, strict dosage control, and complete records. In smallholder farms, medicine use may be less standardized and therefore more prone to errors if there is no professional guidance.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Regardless of scale, veterinary medicines directly affect three core factors: herd and flock health, production costs, and the quality of final products. When used correctly, medicines may help shorten treatment time, reduce mortality, and maintain productivity. When used incorrectly, costs increase while effectiveness decreases, and long-term consequences may affect the entire herd or flock.<\/span><\/p>\n<h3><b>Distinguishing Veterinary Medicines, Vaccines, and Biological Products<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">These three concepts are often used interchangeably in practice:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Veterinary medicines:<\/b><span style=\"font-weight: 400;\"> In practice, veterinary medicines are often understood as products used for disease prevention, diagnosis, treatment, or support in controlling diseases in livestock.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Veterinary vaccines:<\/b><span style=\"font-weight: 400;\"> Biological products containing antigens that stimulate the immune system to develop a protective response against specific pathogens. Vaccines are a proactive disease prevention measure and do not treat an existing disease.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Biological products:<\/b><span style=\"font-weight: 400;\"> A broader group that includes vaccines, monoclonal antibodies, probiotics, digestive enzymes, and microbial support products.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Some biological products, vaccines, or support products used for animals may be managed under different regulatory mechanisms depending on their intended use, ingredients, and current regulations. Therefore, when using or trading these products, it is necessary to check their specific legal classification on the product label and in relevant regulatory documents.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Understanding these boundaries helps farmers avoid confusion between \u201cinjecting a vaccine\u201d and \u201cinjecting a medicine,\u201d and helps prevent incorrect expectations about what each product can do.<\/span><\/p>\n<h3><b>Current Context: Food Safety Requirements, Antimicrobial Resistance, and the Trend Toward Controlled Medicine Use<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">In recent years, Vietnam\u2019s livestock sector has faced increasing pressure from multiple sides. Many import markets apply strict requirements for antibiotic residue testing and food safety. Domestic consumers are also paying more attention to the origin and safety of food. In addition, antimicrobial resistance has become a global concern, affecting not only livestock production but also public health.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The general trend is shifting from \u201cusing medicine whenever it seems necessary\u201d to \u201csystematic herd health management,\u201d where veterinary medicines are used as a controlled tool in combination with biosecurity, nutrition, and routine health monitoring.<\/span><\/p>\n<h2><b>Basic Veterinary Pharmacology Farmers Should Understand<\/b><\/h2>\n<figure style=\"width: 946px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/06\/istockphoto-1096153436-612x612-1.jpg\" alt=\"Animal health worker administering intravenous medicine to cattle\" width=\"956\" height=\"637\" \/><figcaption class=\"wp-caption-text\">The route, dosage, and timing of medicine administration should follow veterinary guidance and product instructions.<\/figcaption><\/figure>\n<h3><b>What Is Veterinary Pharmacology and How Is It Linked to Daily Farm Practice?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Veterinary pharmacology is the science that studies how medicines affect animals and how animals process medicines. It provides the foundation for farmers and veterinarians to select the right medicine, determine the appropriate dose, choose the correct timing, and understand why different animals may respond differently to the same medicine.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">In daily practice, farmers do not need to memorize complex pharmacological theory. However, they should understand the basic principles needed to read product instructions, calculate doses correctly, and recognize signs that a medicine may not be working as expected.<\/span><\/p>\n<h3><b>Pharmacodynamics and Pharmacokinetics Explained Simply<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Veterinary pharmacology consists of two complementary parts:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Pharmacodynamics<\/b><span style=\"font-weight: 400;\"> answers the question: How does a medicine act on the animal\u2019s body? For example, one antibiotic may inhibit bacteria by disrupting the bacterial cell wall, while another may stop bacterial protein synthesis. Understanding this mechanism helps explain why not every antibiotic works against the same type of bacteria.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Pharmacokinetics<\/b><span style=\"font-weight: 400;\"> answers the question: Where does the medicine go in the body and for how long? After an animal is injected with or given medicine orally, the active ingredient is absorbed into the bloodstream, distributed to tissues, then metabolized and eliminated from the body. The withdrawal period before slaughter is based on this process to ensure that the medicine has been sufficiently eliminated.<\/span><\/li>\n<\/ul>\n<h3><b>Factors Affecting Medicine Effectiveness<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">The same medicine and the same dose may produce significantly different results depending on:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Species and breed:<\/b><span style=\"font-weight: 400;\"> Pigs, chickens, cattle, and goats absorb and metabolize medicines differently. Some active ingredients that are safe in one species may not be safe in another species or age group. Product-specific indications should always be checked.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Age and body weight:<\/b><span style=\"font-weight: 400;\"> Young animals often have immature metabolic enzyme systems and may be more prone to overdose.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Health status:<\/b><span style=\"font-weight: 400;\"> Animals with kidney or liver impairment may eliminate medicines more slowly, increasing the risk of accumulation.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Environmental temperature:<\/b><span style=\"font-weight: 400;\"> In high temperatures, the absorption and metabolism of medicines may change. Medicines mixed into drinking water may also break down faster in hot environments.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Diet:<\/b><span style=\"font-weight: 400;\"> Some medicines are absorbed better when animals have an empty stomach, while others are not.<\/span><\/li>\n<\/ul>\n<h3><b>Common Routes of Administration in Livestock Production<\/b><\/h3>\n<table>\n<tbody>\n<tr>\n<td><b>Route of Administration<\/b><\/td>\n<td><b>Advantages<\/b><\/td>\n<td><b>Notes for Use<\/b><\/td>\n<td><b>Commonly Applied For<\/b><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Intramuscular injection (IM)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Fast absorption for some products<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Requires proper technique; may cause stress or reactions at the injection site<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Some antibiotics, vitamins, or vaccines according to the product label<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Subcutaneous injection (SC)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Slower absorption for some products<\/span><\/td>\n<td><span style=\"font-weight: 400;\">May cause local reactions; requires the correct injection site and technique<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Some vaccines or medicines indicated for subcutaneous use according to the product label<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Oral \/ mixed into drinking water<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Easy to apply and suitable for group treatment<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Difficult to control the dose for each animal if animals eat or drink poorly<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Some medicines, electrolytes, vitamins, or products approved for use through drinking water<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Mixed into feed<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Convenient when the product is approved for use through feed<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Animals with poor appetite may not receive a sufficient dose; difficult to control the amount consumed by each animal<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Some medicines or products approved for use through feed according to the product label and veterinary guidance<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Spraying \/ topical application<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Suitable for disinfection or external parasite control<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Effectiveness depends on spraying technique, dilution concentration, and contact time<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Disinfection of farm facilities or external parasite control according to product instructions<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><b>Note:<\/b><span style=\"font-weight: 400;\"> The route of administration for veterinary medicines must follow the product label, manufacturer instructions, and veterinary advice. Do not change the route of administration, dosage, or combine multiple medicines without professional guidance.<\/span><\/p>\n<h2><b>Classification of Veterinary Medicines by Use<\/b><\/h2>\n<figure style=\"width: 987px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/06\/magnifying-glass-doctors-hands-with-glove-looking-research-something-laboratory_350285-5303.jpg\" alt=\"Veterinary medicines, syringes, and medical equipment used in livestock production\" width=\"997\" height=\"664\" \/><figcaption class=\"wp-caption-text\">Each group of veterinary medicines has specific purposes, indications, and safety requirements.<\/figcaption><\/figure>\n<h3><b>Common Ways to Classify Veterinary Medicines in Production Practice<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">There are many ways to classify veterinary medicines: by origin, mechanism of action, route of administration, or intended use. In production practice, classification by use is the most practical and intuitive approach. It helps farmers identify which type of medicine may be needed in a specific situation.<\/span><\/p>\n<h3><b>Overview of Veterinary Medicine Groups<\/b><\/h3>\n<table>\n<tbody>\n<tr>\n<td><b>Medicine Group<\/b><\/td>\n<td><b>Purpose of Use<\/b><\/td>\n<td><b>Important Notes<\/b><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Antibiotics<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Treat bacterial infections<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Identify the correct bacteria, follow the treatment protocol, and observe the withdrawal period<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Antiparasitic medicines<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Control worms, flukes, ticks, mange mites, lice, and some protozoan parasites such as coccidia<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Choose the right product according to the pathogen, animal species, body weight, age, product label, and veterinary guidance<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Vaccines<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Prevent infectious diseases<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Do not treat an existing disease; require proper cold-chain storage<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Disinfectants<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Disinfect farm facilities and equipment<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Use the correct concentration; do not apply directly to animals unless specifically indicated<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Anti-inflammatory and antipyretic medicines<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Reduce inflammation, pain, and fever symptoms<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Support symptom control only; do not replace treatment of the root cause<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Digestive support products, electrolytes, and probiotics<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Support recovery and electrolyte supplementation<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Supportive use only; not the main treatment for disease<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Hormones and reproductive regulation products<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Support reproduction under veterinary indication<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Must be used under veterinary guidance; may affect animal products<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><b>Veterinary Antibiotics: Spectrum, Indications, and Limitations to Understand<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Antibiotics are among the most commonly used medicine groups in livestock production and also one of the groups with a high risk of misuse. Key points to understand include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Antibiotics do not kill viruses. For viral diseases, antibiotics do not treat the root cause. They should only be used under veterinary guidance, such as when secondary bacterial infection is suspected or confirmed.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Each antibiotic group, such as beta-lactams, tetracyclines, fluoroquinolones, and aminoglycosides, has a different spectrum of activity and is suitable for different types of bacteria.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Antibiotics need to be used at the correct dose and for the full recommended duration. Stopping treatment early when animals appear healthier is a common cause of relapse and resistance.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Some antibiotic active ingredients may be subject to strict management, restricted use, or professional prescription requirements depending on current regulations.<\/span><\/li>\n<\/ul>\n<h3><b>Internal and External Antiparasitic Medicines<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Parasites in livestock production can be divided into two main groups that require different control approaches:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Internal parasites, such as worms, flukes, coccidia, and toxoplasma:<\/b><span style=\"font-weight: 400;\"> These may include roundworms, flukes, tapeworms, and some protozoan parasites such as coccidia. Control measures should be selected according to the specific parasite, animal species, age group, and veterinary guidance. Not all parasite control should be broadly referred to as \u201cdeworming.\u201d<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>External parasites, such as ticks, fleas, mange mites, and lice:<\/b><span style=\"font-weight: 400;\"> These may be controlled with topical sprays, baths, or spot-on products depending on the medicine and animal species. Care should be taken to prevent animals from licking the product.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Routine parasite control programs may help reduce disease burden, improve feed absorption, and support farm productivity depending on the conditions of each farm.<\/span><\/p>\n<h3><b>Veterinary Vaccines and Immune Products<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Depending on the animal species and epidemiological risk, vaccines for diseases such as foot-and-mouth disease, avian influenza, classical swine fever, Newcastle disease, or hemorrhagic septicemia are often important components of disease prevention schedules. Specific vaccination schedules should be developed based on guidance from veterinarians and relevant authorities, in line with the animal species, disease risk in the area, and each farm\u2019s production process.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Important points when using vaccines include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Vaccines must be stored according to the product label and manufacturer instructions. Many veterinary vaccines require a cold chain of 2\u20138\u00b0C, while some specialized products may require different storage conditions.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not guess the required storage temperature without checking the product label. A broken cold chain may greatly reduce or eliminate vaccine potency.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Vaccine effectiveness depends on animal health at the time of vaccination, storage quality, and vaccination technique.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">After vaccination, animals need time to develop immunity. The specific duration depends on each vaccine.<\/span><\/li>\n<\/ul>\n<h3><b>Disinfectants and Farm Sanitation Products<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Disinfectants are not used to treat disease in animals. They are used to kill pathogens in the environment. Common disinfectant groups include quaternary ammonium compounds, iodine, chlorine, glutaraldehyde, and phenol. Each group has different effectiveness against bacteria, viruses, and fungi, as well as different levels of material corrosion. The right product should be selected for each purpose.<\/span><\/p>\n<h3><b>Anti-inflammatory, Antipyretic, and Pain Relief Medicines<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">NSAIDs, or non-steroidal anti-inflammatory drugs, are commonly used to control inflammation, fever, and pain during treatment. Corticosteroids also have anti-inflammatory effects but should be used carefully due to the risk of side effects. Long-term use may suppress immunity. These medicines support symptom management and do not treat the underlying cause of disease. Their use should follow veterinary guidance.<\/span><\/p>\n<h3><b>Digestive Support Products, Electrolytes, Probiotics, and Supportive Products<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">This group includes oral rehydration electrolyte solutions, which are especially important when animals have diarrhea or dehydration, as well as digestive enzymes, probiotics, prebiotics, vitamins, and mineral supplements. These products are not the main treatment for disease, but they play a supportive role in recovery and maintaining health during and after treatment.<\/span><\/p>\n<h3><b>Hormones and Reproductive Regulation Products<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Reproductive hormone products such as oxytocin, prostaglandins, or GnRH should only be used under the indication and supervision of a veterinarian. Farmers need to follow the product label, approved animal species, withdrawal period if applicable, and current food safety regulations.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">This group requires veterinary indication and supervision, because incorrect use may cause serious reproductive disorders in breeding animals.<\/span><\/p>\n<h2><b>When Should Veterinary Medicines Be Used on the Farm?<\/b><\/h2>\n<figure style=\"width: 934px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/06\/istockphoto-622278878-612x612-1.jpg\" alt=\"Veterinarian preparing to administer an injection to cattle on a farm\" width=\"944\" height=\"679\" \/><figcaption class=\"wp-caption-text\">Treatment decisions should be based on an accurate diagnosis and professional veterinary advice.<\/figcaption><\/figure>\n<h3><b>Distinguishing Medicine Use for Disease Prevention, Treatment, and Recovery Support<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">The purpose of medicine use determines the type of product and how it should be used:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Disease prevention or prophylaxis:<\/b><span style=\"font-weight: 400;\"> This includes scheduled vaccination, cleaning and disinfection of farm facilities, parasite control, and maintenance of biosecurity. Preventive medicine use should be based on epidemiological risk, animal species, production stage, veterinary guidance, product labels, and current regulations.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Disease treatment:<\/b><span style=\"font-weight: 400;\"> This involves using antibiotics, anti-inflammatory medicines, or specific treatments after the disease has been identified. Diagnosis is necessary, preferably from a veterinarian or an authorized animal health professional.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Supportive care:<\/b><span style=\"font-weight: 400;\"> This includes electrolytes, vitamins, and probiotics during and after treatment to help animals recover faster.<\/span><\/li>\n<\/ul>\n<h3><b>Signs of Herd or Flock Health Issues That May Require Medicine Intervention and When to Call a Veterinarian<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Farmers should monitor animals closely and seek appropriate action when signs appear, such as:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Poor appetite, reduced feed intake, or abnormal water consumption<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Fever, trembling, depression, or separation from the group<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Diarrhea, bloody feces, or abnormal feces color and odor<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Coughing, breathing difficulty, nasal discharge, or eye discharge<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Pale, yellow, or bluish skin and mucous membranes<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A sudden increase in mortality within the herd or flock<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">A veterinarian should be contacted immediately when many animals become sick at the same time, the disease progresses quickly, the cause cannot be identified, mortality increases, or animals do not improve after initial handling under professional guidance. Farmers should not use antibiotics or combine multiple medicines on their own before receiving veterinary advice.<\/span><\/p>\n<h3><b>When Should Isolation, Culling, or Handling Under Veterinary Guidance Be Considered?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Increasing medicine use is not always the solution. In some cases involving severe disease, suspected dangerous infectious diseases, or a high risk of rapid spread, farms should immediately isolate affected animals and contact a veterinarian or local animal health authority for handling guidance. Decisions on treatment, culling, or disposal must be based on diagnosis, current regulations, and professional risk assessment.<\/span><\/p>\n<h2><b>Frequently Asked Questions About Veterinary Medicines in Livestock Production<\/b><\/h2>\n<figure style=\"width: 958px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/06\/istockphoto-1365901252-612x612-1.jpg\" alt=\"Frequently asked questions about veterinary medicines in livestock production\" width=\"968\" height=\"645\" \/><figcaption class=\"wp-caption-text\">Common questions about veterinary medicines, vaccines, antibiotics, withdrawal periods, and responsible use.<\/figcaption><\/figure>\n<h3><b>Can Farmers Buy and Use Veterinary Medicines on Their Own?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Some veterinary products may be used according to label instructions. However, treatment medicines, antibiotics, hormones, or medicines used for serious diseases should be used with veterinary advice. Farmers should not combine medicines on their own or reuse an old prescription for a newly sick herd or flock.<\/span><\/p>\n<h3><b>What Is the Withdrawal Period?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">The withdrawal period is the time that must pass after medicine use before animals are slaughtered or before eggs, milk, or other animal products are harvested. The purpose is to reduce the risk of medicine residues exceeding permitted levels in food. This period depends on the active ingredient, animal species, route of administration, and product label.<\/span><\/p>\n<h3><b>Can Veterinary Vaccines Treat an Existing Disease?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Veterinary vaccines are mainly used for disease prevention by stimulating immunity before animals are exposed to pathogens. Vaccines are not medicines for treating an existing disease. When a herd or flock already shows signs of disease, farmers should contact a veterinarian for diagnosis and appropriate handling guidance.<\/span><\/p>\n<h3><b>Should Antibiotics Be Used Routinely for Disease Prevention?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Farmers should not use antibiotics routinely for disease prevention without diagnosis or professional indication. Overuse of antibiotics may increase the risk of antimicrobial resistance, reduce treatment effectiveness, and create residue risks in livestock products.<\/span><\/p>\n<h3><b>When Should a Veterinarian Be Called?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">A veterinarian should be called when many animals become sick at the same time, the disease progresses quickly, mortality increases, animals have high fever, breathing difficulty, severe diarrhea, prolonged loss of appetite, or the cause cannot be identified. For suspected dangerous infectious diseases, affected animals should be isolated and handled according to professional guidance.<\/span><\/p>\n<h3><b>Should Farmers Combine Multiple Veterinary Medicines on Their Own?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Farmers should not combine multiple veterinary medicines without professional guidance. Some medicines may interact, reduce treatment effectiveness, or increase the risk of side effects. When animals are severely sick, the disease spreads quickly, or there is no improvement after medicine use, farmers should contact a veterinarian for diagnosis and appropriate handling guidance.<\/span><\/p>\n<h2><b>Explore Veterinary Solutions and Connect with the Livestock Value Chain at VIETSTOCK 2026<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Using veterinary medicines properly not only helps control disease within herds and flocks, but is also directly linked to food safety, traceability, production costs, and the competitiveness of livestock businesses. As requirements for disease prevention, antimicrobial resistance control, biosecurity, and export standards become increasingly strict, businesses need greater access to modern veterinary solutions and preventive animal health management models.<\/span><\/p>\n<p><b>VIETSTOCK 2026<\/b><span style=\"font-weight: 400;\"> will serve as a specialized connection platform for farms, livestock businesses, veterinary medicine suppliers, vaccine providers, biological product providers, farm equipment suppliers, and biosecurity solution providers. The event is expected to bring together more than 300 brands, over 10,000 m\u00b2 of exhibition area, and 13,000 trade visitors from more than 40 countries and territories. It will create opportunities for the livestock community to update technologies, connect with partners, and find suitable solutions for the next stage of development.<\/span><\/p>\n<p><b>The Vietnam Pavilion at VIETSTOCK 2026<\/b><span style=\"font-weight: 400;\"> provides a dedicated space for Vietnamese companies to showcase capabilities in animal health, vaccines, biological products, biosecurity, and herd health management. It also enables local solution providers to engage directly with farm owners, distributors, trade buyers, and partners across the livestock value chain.<\/span><\/p>\n<p><b>With support from the Department of Animal Health and Production<\/b><span style=\"font-weight: 400;\">, companies participating in the Vietnam Pavilion may benefit from <\/span><b>preferential participation support of up to 45%<\/b><span style=\"font-weight: 400;\">. This helps Vietnamese exhibitors optimize their participation costs while improving access to targeted audiences in the animal health, livestock, and biosecurity sectors.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">At <\/span><b>VIETSTOCK 2026<\/b><span style=\"font-weight: 400;\">, attendees can:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Update<\/b><span style=\"font-weight: 400;\"> new solutions in veterinary medicines, vaccines, biological products, and biosecurity for livestock production.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Meet <\/b><span style=\"font-weight: 400;\">suppliers, experts, and businesses in the animal health sector.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Learn<\/b><span style=\"font-weight: 400;\"> about trends in disease management, responsible use of veterinary medicines, and antimicrobial resistance prevention.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Connect <\/b><span style=\"font-weight: 400;\">with partners across the entire value chain: feed, breeding stock, animal health, farm equipment, production, and processing.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Explore opportunities <\/b><span style=\"font-weight: 400;\">to participate in the Vietnam Pavilion to strengthen brand presence and expand international connections.<\/span><\/li>\n<\/ul>\n<p><b>Date:<\/b><span style=\"font-weight: 400;\"> 21\u201323 October 2026<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span> <b>Venue:<\/b><span style=\"font-weight: 400;\"> Saigon Exhibition and Convention Center (SECC), 799 Nguyen Van Linh Street, District 7, Ho Chi Minh City, Vietnam<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span> <b>Event website:<\/b><a href=\"https:\/\/www.vietstock.org\/en\/\"> <span style=\"font-weight: 400;\">https:\/\/www.vietstock.org\/en\/<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><\/a> <b>Visitor registration:<\/b><a href=\"https:\/\/www.vietstock.org\/en\/online-registration-2\/\"> <span style=\"font-weight: 400;\">https:\/\/www.vietstock.org\/en\/online-registration-2\/<\/span><\/a><\/p>\n<p><span style=\"font-weight: 400;\">If your business provides solutions in animal health, vaccines, biosecurity, or livestock health management, this is also an opportunity to be present at the Vietnam Pavilion and connect directly with the domestic and international industry community.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\ud83d\udc49 <\/span><b>Book a stand at VIETSTOCK 2026 today<\/b><span style=\"font-weight: 400;\"> to take advantage of a central location, available preferential support, and global connection opportunities.<\/span><\/p>\n<p><b>Contact:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Exhibiting:<\/b><span style=\"font-weight: 400;\"> Ms. Sophie Nguyen \u2013 Sophie.nguyen@informa.com<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Visitor Support:<\/b><span style=\"font-weight: 400;\"> Ms. Phuong \u2013 Phuong.C@informa.com<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Marcom Support:<\/b><span style=\"font-weight: 400;\"> Ms. Anita Pham \u2013 Anita.pham@informa.com<\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>An overview of veterinary medicines in livestock production, including common types, the 6 rights, withdrawal periods, antimicrobial resistance, and safe-use practices.<\/p>\n","protected":false},"author":3,"featured_media":18484,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[45],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Veterinary Medicines for Livestock 2026 : Types &amp; Safe Use<\/title>\n<meta name=\"description\" content=\"Learn about veterinary medicines, common types, the 6 rights, withdrawal periods, and safety practices for responsible use in livestock production.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.vietstock.org\/en\/tin-nganh\/thuoc-thu-y-phan-loai-cach-su-dung-an-toan\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Veterinary Medicines for Livestock 2026 : Types &amp; Safe Use\" \/>\n<meta property=\"og:description\" content=\"Learn about veterinary medicines, common types, the 6 rights, withdrawal periods, and safety practices for responsible use in livestock production.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.vietstock.org\/tin-nganh\/thuoc-thu-y-phan-loai-cach-su-dung-an-toan\/\" \/>\n<meta property=\"og:site_name\" content=\"Vietstock Expo and Forum\" \/>\n<meta property=\"article:published_time\" content=\"2026-06-15T08:00:11+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-15T04:11:53+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/06\/VETERINARY-DRUGS-IN-LIVESTOCK-2026\u2028.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\">\n\t<meta name=\"twitter:data1\" content=\"17 minutes\">\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.vietstock.org\/#website\",\"url\":\"https:\/\/www.vietstock.org\/\",\"name\":\"Vietstock Expo and Forum\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":\"https:\/\/www.vietstock.org\/?s={search_term_string}\",\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en\"},{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.vietstock.org\/tin-nganh\/thuoc-thu-y-phan-loai-cach-su-dung-an-toan\/#primaryimage\",\"inLanguage\":\"en\",\"url\":\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/06\/VETERINARY-DRUGS-IN-LIVESTOCK-2026\\u2028.jpg\",\"width\":1200,\"height\":675},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.vietstock.org\/tin-nganh\/thuoc-thu-y-phan-loai-cach-su-dung-an-toan\/#webpage\",\"url\":\"https:\/\/www.vietstock.org\/tin-nganh\/thuoc-thu-y-phan-loai-cach-su-dung-an-toan\/\",\"name\":\"Veterinary Medicines for Livestock 2026 : Types & Safe Use\",\"isPartOf\":{\"@id\":\"https:\/\/www.vietstock.org\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.vietstock.org\/tin-nganh\/thuoc-thu-y-phan-loai-cach-su-dung-an-toan\/#primaryimage\"},\"datePublished\":\"2026-06-15T08:00:11+00:00\",\"dateModified\":\"2026-06-15T04:11:53+00:00\",\"author\":{\"@id\":\"https:\/\/www.vietstock.org\/#\/schema\/person\/caaf897414eac1b9f130df4ddb9e34d6\"},\"description\":\"Learn about veterinary medicines, common types, the 6 rights, withdrawal periods, and safety practices for responsible use in livestock production.\",\"breadcrumb\":{\"@id\":\"https:\/\/www.vietstock.org\/tin-nganh\/thuoc-thu-y-phan-loai-cach-su-dung-an-toan\/#breadcrumb\"},\"inLanguage\":\"en\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.vietstock.org\/tin-nganh\/thuoc-thu-y-phan-loai-cach-su-dung-an-toan\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.vietstock.org\/tin-nganh\/thuoc-thu-y-phan-loai-cach-su-dung-an-toan\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"item\":{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.vietstock.org\/en\/\",\"url\":\"https:\/\/www.vietstock.org\/en\/\",\"name\":\"Trang ch\\u1ee7\"}},{\"@type\":\"ListItem\",\"position\":2,\"item\":{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.vietstock.org\/tin-nganh\/thuoc-thu-y-phan-loai-cach-su-dung-an-toan\/\",\"url\":\"https:\/\/www.vietstock.org\/tin-nganh\/thuoc-thu-y-phan-loai-cach-su-dung-an-toan\/\",\"name\":\"Veterinary Medicines in Livestock Production in 2026: Classification, Principles of Use, and Safety Notes\"}}]},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.vietstock.org\/#\/schema\/person\/caaf897414eac1b9f130df4ddb9e34d6\",\"name\":\"vietwatercc\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.vietstock.org\/#personlogo\",\"inLanguage\":\"en\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/1f8963694a555b77c6f4e61284c4fadb?s=96&d=mm&r=g\",\"caption\":\"vietwatercc\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","_links":{"self":[{"href":"https:\/\/www.vietstock.org\/en\/wp-json\/wp\/v2\/posts\/18483"}],"collection":[{"href":"https:\/\/www.vietstock.org\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietstock.org\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietstock.org\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietstock.org\/en\/wp-json\/wp\/v2\/comments?post=18483"}],"version-history":[{"count":1,"href":"https:\/\/www.vietstock.org\/en\/wp-json\/wp\/v2\/posts\/18483\/revisions"}],"predecessor-version":[{"id":18486,"href":"https:\/\/www.vietstock.org\/en\/wp-json\/wp\/v2\/posts\/18483\/revisions\/18486"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.vietstock.org\/en\/wp-json\/wp\/v2\/media\/18484"}],"wp:attachment":[{"href":"https:\/\/www.vietstock.org\/en\/wp-json\/wp\/v2\/media?parent=18483"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietstock.org\/en\/wp-json\/wp\/v2\/categories?post=18483"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietstock.org\/en\/wp-json\/wp\/v2\/tags?post=18483"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}