ExoticRx · exoticrx.com/drugs/verapamil
US brand names:Calan, Isoptin
Verapamil is dosed at 1–3 mg/kg PO q8h in dogs, per Verified against BSAVA Small Animal Formulary, 10th Ed, Part A, p.439 (2026-08-01).. Verify against current literature before clinical use.
Non-dihydropyridine calcium channel blocker that slows AV conduction, reduces heart rate, and has negative inotropic effects.
Contraindicated with concurrent beta-blockers IV, heart block, or severe LV dysfunction. Monitor ECG. May cause constipation.
Species references:All Dog (Domestic) drugs
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A dog/cat sample is shown here. Cited dosing for all 1 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 |
|---|---|---|---|---|---|
| Dog (Domestic) | PO | 1–3 mg/kg | q8h | Moderate | Verified against BSAVA Small Animal Formulary, 10th Ed, Part A, p.439 (2026-08-01). |
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