
Merck
Protazil (1.56% Diclazuril) Antiprotozoal Pellets, 2.4lb
Protazil (1.56% Diclazuril) Antiprotozoal Pellets, 2.4lb
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Protazil® (1.56% diclazuril) Antiprotozoal Pellets — For Horses
Protazil is a prescription, alfalfa-based top-dress pellet indicated for the treatment of equine protozoal myeloencephalitis (EPM) caused by Sarcocystis neurona in horses. It was the first FDA-approved alfalfa-based pelleted formulation containing diclazuril, an antiprotozoal compound active against organisms in the phylum Apicomplexa. Because it's fed as a top-dress in the horse's daily grain ration rather than administered as a paste or oral suspension, Protazil makes a 28-day treatment course simpler to manage — no syringes, no dosing gun, no fight at feeding time.
Key Details
- Active ingredient: 1.56% diclazuril
- Alfalfa-based pellet, top-dressed on the horse's regular grain ration
- Inert ingredients include dehydrated alfalfa meal, wheat middlings, cane molasses, and propionic acid (preservative)
- Supplied in a 2.4-lb (1.1-kg) bucket with a marked measuring scoop
- One 2.4-lb bucket treats a 1,274-lb horse for the full 28 days
- For use in horses only
- Prescription (Rx) — requires a valid veterinary prescription
Dosing
The labeled dose is 1 mg diclazuril per kg (0.45 mg/lb) of body weight, fed once daily for 28 consecutive days. That works out to 64 mg of pellets per kg (29 mg pellets/lb) of body weight. Weigh the horse or use a weight tape, then fill the scoop to the cup mark that corresponds to your horse's weight per the dosing chart on the label. Follow your veterinarian's directions and see the package insert for complete dosing information.
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