One of the most common ailments chickens can suffer is coccidiosis. Coccidia are parasites on chickens, which infect the chicken’s stomach tissue upon ingestion. Once attached to the tissue, the organism starts to multiply and spread. In severe cases, this will cause bleeding within the intestinal tract or cecal, which starts to have a negative impact on the animal’s health. If left untreated, coccidia can be fatal. Smart backyard chicken keepers keep Amprolium on hand and use as it as a preventative measure against this fatal illness.


Amprolium is a common anticoccidial medication used in the treatment and prevention of coccidiosis in chickens and turkeys. In the United States, it is one of the few medications approved by the FDA for use in egg laying hens. There is no withdrawal period. Amprolium works by mimicking thiamine (Vitamin B1), which is what cocci require to grow and reproduce inside the chicken. When cocci ingest amprolium, they experience thiamin deficiency and starve from malnutrition. This is why it’s important not to administer Vitamin B1 to chickens who are concurrently being treated with amprolium.

Uses/benefits of Amprolium 200 For Chickens

Amprolium 200 Soluble Powder is administered through the drinking water as an aid in the prevention and treatment of economically important strains of coccidiosis in poultry, includingE. tenella,E. nexatixand most stains ofE. acervulina.


  •  As a treatment when birds are already showing symptoms of coccidiosis, or are known to be infected.
  •  As a preventative in healthy flocks, or flocks that are at risk due to stress or other health issues.

The Number One Treatment of Coccidiosis

The most effective way to treat coccidiosis in chickens is Amprolium 200 Coccidiostat. Use Amprolium at the first sign of the infection. Simply add the powder to the drinking water as per the directions. Use continuously for up to a week, depending on the severity of the infection. The dosage should then be progressively reduce over the next two weeks in order to prevent any possible withdrawal. Use coccidiostat to effectively treat infected birds. Also safely use a preventative measure for healthy birds.

To control coccidiosis in chickens, keep the living conditions clean and change the water supply frequently. Good sanitation and nutrition are significant indicators in the prognosis of any coccidia infection. Treatment with Coccidiostat is important at the first sign of infection.

Dosage And Administration:

For oral administration via feed or drinking water.

  • Poultry : 125 – 200 ml per 100 litres of drinking water during 5 – 7 days, followed by 30 ml per 100 litres of drinking water during 1 or 2 weeks. (During treatment, only medicated drinking
    water should be administered.)
  • Calves, lambs, kids, pigs : 4 ml per 20 kg bodyweight as drench during 1 – 2 days, followed by 10 litres per 1,000 litres of drinking water during 3 weeks.
  • Cattle, sheep : 4 ml per 20 kg bodyweight during 5 days.

Mixed with feed, the product should be used immediately. Medicated drinking water should be used within 24 hours.
If no improvement is noted within 3 days, evaluate the symptoms to determine the presence of other diseases. Follow the instructions of your veterinarian or poultry pathologist.

Dosage for Prevention (coccidiostat)
Use 5g to 4 litres of drinking water (240mg amprolium per litre) for 24 hours every fourth day during periods of likely infection. This action helps control the coccidia by interrupting the life cycle and encourages immunity to develop.

Dosage for Treatment (coccidiocide)
Use 5g to 4 litres of drinking water (240mg amprolium per litre) CONTINUOUSLY for 5-7 days, reduce this to 3g to 4 litres for a further 5-7 days. This gradual reduction in the level of treatment assists the birds to develop immunity while maintaining some level of protection.

Prices of Amprolium 200 For Chickens

$29.95 – $120.00

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