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NADA Number: 141-188

Proprietary Name Marquis® Antiprotozoal Oral Paste
Sponsor Merial, Inc.
Sponsor Address 3239 Satellite Blvd.
Bldg. 500
Duluth, GA    30096-4640
Ingredients Ponazuril
Species (Class) EQUIDS (Horse, not for meat production)
Routes of Administration Per Os
Dosage Form Paste
Dispensing Status RX
Patent Number (Expiration Date) (No Expiration Date)
5883095 (No Expiration Date)
Exclusivity No product using ponazuril as an active ingredient has been previously approved for use in horses in any other application.
Dosage Amount,
& Limitations

520.1855 Ponazuril.

Specifications: Each gram of paste contains 150 milligrams (mg) ponazuril.


Amount: 5 mg per kilogram body weight, daily for 28 days.

Indications: For the treatment of equine protozoal myeloencephalitis caused by Sarcocystis neurona.

Limitations: Do not use in horses intended for human consumption. Federal law restricts this drug to use by or on the order of a licensed veterinarian.