The proven power of CORID® (amprolium).
- CORID is the first and #1 selling1 coccidiostat labeled as an aid in
the prevention and treatment of coccidiosis (bloody scours) in beef and dairy calves.
- Only CORID offers a wide range of formulations and package sizes to fit your needs
- 9.6% oral solution in gallons or pints, 20% soluble powder in 10-ounce packets
or convenient CORID in-feed formulations.*
- CORID is approved for use in USDA Natural Beef and Never Ever 3 programs when used according to the label.2,3
- Amprolium has a unique mode of action.
How CORID works
Structurally, CORID mimics thiamin (Vitamin B1) which is required by coccidia for
normal growth and reproduction. When coccidia ingest CORID, they experience thiamin
deficiency and starve from malnutrition.
When CORID works
CORID stops coccidia at a critical stage in the host animal's small intestine to
prevent more damaging coccidiosis in the large intestine. By acting on the young
asexual stages of the coccidia life cycle, CORID allows exposure to first-generation
schizonts, so the host animal can develop natural immunity to coccidia. This makes
CORID effective as a preventive therapy.
How CORID pays
PREVENT THE DISEASE - Use a 21-day prevention program.
TREAT THE OUTBREAK - Use a five-day treatment program.
- Administer CORID when experience tells you conditions are favorable for the development
of coccidiosis or any time cattle are exposed to unusual stress
- CORID effectively breaks the coccidia life cycle before a clinical coccidiosis outbreak
- Preventing coccidiosis allows animals to absorb nutrients naturally, so they maintain
the ability to fight stress
- CORID helps to reduce the spread of infective coccidia oocysts
- Administer CORID at the first clinical sign of coccidiosis, such as diarrhea and
- CORID stops the development of merozoites before they further damage the large intestine
- CORID helps to reduce oocyst discharge in the feces, to reduce disease spread
- Drinking water or drench administration ensures CORID will reach the intestine,
even in animals with reduced feed intake and low gastrointestinal motility
- CORID treats clinical coccidiosis
CORID. To help prevent and treat coccidiosis, count
on the expert.
- Unique flexibility. CORID is labeled to both help prevent and treat bovine coccidiosis
(bloody scours) caused by Eimeria bovis and E. zurnii in calves.
- Administration flexibility. CORID can be administered in drinking water, as a drench,
or in-feed to prevent or treat bovine coccidiosis.
- CORID should be used on a group, pen or herd basis. When one or more calves show
clinical signs of coccidiosis, it's likely the rest of the group has been exposed
to coccidia and all calves in the group, pen or herd should receive CORID.
- Palatable. CORID is palatable and readily accepted by cattle.
- Safety. CORID is safe when administered at the recommended dose.
Important Safety Information: Withdraw 24 hours before slaughter. Do not use in calves to be processed for veal.
For technical information on CORID(amprolium) Brand Products, click on
the product data sheets below or download a printable
pdf of the CORID Mixing and Administration Guidelines.
CORID brand products are sold via veterinary clinics and farm supply locations that
carry animal health products. If you can't find CORID brand products locally or
have any other questions, please call MERIAL at 1-888-637-4251 (select option 1,
then press 2) to reach a Merial large-animal customer care representative.
*CORID in-feed formulations are made by
and available from licensed feed manufacturers.
1Data on file at Merial.
2Federal Register. Rules and regulations. 2008;73(197):59479–59482.
3Data on file at Merial.