Dog · Canis lupus familiaris · typical adult weight 2.00–80.00 kg
Toltrazuril is dosed at 10–30 mg/kg PO Single dose or q24h x 3 days in dogs, per 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).. Toltrazuril is used in dogs for Coccidiosis (Isospora). Routes documented in dogs: PO. A typical adult dog weighs 2.00–80.00 kg. ExoticRx lists 1 cited dose rule for Toltrazuril in dogs, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Baycox
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| PO | 10–30 mg/kg | Single dose or q24h x 3 days | 1-3 days | Coccidiosis (Isospora) | 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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These ranges are per kg. Enter your dog's weight to get the precise dose and draw-up volume — unit and concentration math done for you.
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-specific contraindications and adverse-reaction reports for dogs may differ from canine / feline reference data — consult the primary citations listed with each rule.
Toltrazuril dose range in dogs, with cited source references: PO 10–30 mg/kg Single dose or q24h x 3 days. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Toltrazuril in dogs: PO.
Cited course lengths for Toltrazuril in dogs include: 1-3 days. Duration depends on the indication — match it to the specific dose rule in the table above.
Toltrazuril is indicated in dogs for: Coccidiosis (Isospora).
These are general warnings for Toltrazuril across species; consult the dog dosing table above for species-specific guidance. Generally well-tolerated. Primarily used for coccidiosis. Single-dose or short-course treatment. Bitter taste. Extra-label use in small animals.
Why a species-specific page? Toltrazuril pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in dogs — the rules above are the citations specific to this species, not generic recommendations.
Sourced from published veterinary references; awaiting credentialed clinical reviewer. See our editorial process. Reference only — not veterinary advice.