ExoticRx · exoticrx.com/drugs/toltrazuril
US brand names:Baycox
Toltrazuril is dosed at 10–25 mg/kg PO q24h x 2-3 days in african grey parrots, per Carpenter's Exotic Animal Formulary, 6th Ed. | Open-access corroboration 2026-07-21: PMC7129257 — Clinical Management of Avian Renal Disease, VCNA Exot Anim Pract (PMC7129257). avian coccidiosis; supports the 25 mg/kg PO upper bound. CAVEAT: source interval is once weekly vs DB q24h x2-3d.. Verify against current literature before clinical use.
Disrupts mitochondrial function and nuclear division in all intracellular stages of coccidia. Coccidiocidal rather than coccidiostatic.
Generally well-tolerated. Primarily used for coccidiosis. Single-dose or short-course treatment. Bitter taste. Extra-label use in small animals.
Species references:All African Grey Parrot drugsAll Cat (Domestic) drugsAll Cattle (Beef/Dairy) drugsAll Dog (Domestic) drugsAll Goat (Caprine) drugsAll Sheep (Ovine) drugsAll Swine (Pig) drugs
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A dog/cat sample is shown here. Cited dosing for all 7 species — reptiles, birds, pocket pets, livestock, and equine — is free on the per-species pages above. Pro adds the weight-based calculator for every species.
| Species | Route | Dose | Frequency | Evidence | Source |
|---|---|---|---|---|---|
| Cat (Domestic) | PO | 10–30 mg/kg | Single dose or q24h x 3 days | Moderate | Papich Handbook of Veterinary Drugs, 5th Ed |
| Dog (Domestic) | PO | 10–30 mg/kg | Single dose or q24h x 3 days | Moderate | Companion Animal Parasite Council (CAPC). Coccidia. https://capcvet.org/guidelines/coccidia/. Accessed on 4/18/22.; Daugschies A, Mundt HC, Letkova V. Toltrazuril treatment of cystoisosporosis in dogs under experimental and field conditions. Parasitol Res. 2000;86(10):797-799. doi:10.1007/s004360000217 — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.1283 (2026-08-01). |
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View PlansSource citations and evidence levels available on the live page. Reference only — verify against current literature before clinical use.