What Is Pyridizinone? 

Pyridizinone is a water-soluble powder containing 100% sodium sulfachlorpyridazine an efficient sulphonamide antibiotic. Each 54 g sachet delivers the full potency of sulfachlorpyridazine (50 g equivalent), making it ideal for oral administration via drinking water in poultry or oral dosing in calves. 

Sulfachlorpyridazine works by inhibiting the growth of bacteria and protozoa, preventing them from replicating and giving the animal’s immune system a chance to recover. 

Uses in Poultry 

Pyridizinone is widely used for treating: 

• Coccidiosis 
  Caused by Eimeria species, coccidiosis leads to bloody droppings, weight loss, and high mortality in young birds. Pyridizinone helps stop the infection early, reducing intestinal damage and supporting faster recovery. 

• Fowl Typhoid 
  Caused by Salmonella gallinarum, this bacterial infection leads to fever, lethargy, and reduced egg production. Pyridizinone disrupts bacterial multiplication, helping birds regain health quickly. 

• Fowl Cholera 
  Caused by Pasteurella multocida, this disease affects the respiratory system and can cause sudden death in flocks. Treatment with Pyridizinone can help control outbreaks and reduce mortality. 

Uses in Calves (Under One Month) 

Young calves are particularly vulnerable to bacterial infections, especially during the early weeks of life. Pyridizinone is used to treat: 

• Colibacillosis (E. coli infections) 
  A major cause of diarrhea, dehydration, and early death in calves. Early treatment can prevent complications and reduce spread. 

• Neonatal Diarrhea 
  Common in young calves, diarrhea from bacterial causes can quickly turn dangerous. Pyridizinone provides an effective and easy-to-administer solution. 

Why Choose Pyridizinone? 

• Fast-acting and highly soluble – easily mixed in drinking water for flock-wide treatment 

•  Broad-spectrum – targets both bacterial and protozoal pathogens 

• Trusted safety – can be used in young poultry and calves under proper veterinary guidance 

•  Supports productivity – reduces illness-related weight loss, mortality, and performance setbacks 

Whether you’re dealing with coccidiosis in chicks or colibacillosis in newborn calves, Pyridizinone offers a dependable and fast-acting solution. Its broad-spectrum effectiveness, ease of use, and proven results make it a valuable tool in any animal health program.