Dog · Canis lupus familiaris · typical adult weight 2.00–80.00 kg
Tropicamide is dosed at 1 drop/eye TOPICAL Single application in dogs, per BSAVA Small Animal Formulary, 10th ed. (2020), Part A - Canine and Feline, printed p.420 (corpus PDF p.436), Tropicamide, DOSES - "Dogs, Cats: 1 drop per eye, repeat after 20-30 min if necessary." Formulary of record retained: Plumb's Veterinary Drug Handbook (9th ed. cited; 10th ed. 2023 held), Tropicamide Ophthalmic, Dosages, printed p.1410 (corpus PDF p.1437) - "Mydriasis (extra-label): 1 to 2 drops repeated in 5 minutes in the eye to be examined to achieve pupillary dilation.". Tropicamide is used in dogs for Diagnostic mydriasis. Routes documented in dogs: TOPICAL. A typical adult dog weighs 2.00–80.00 kg. ExoticRx lists 1 cited dose rule for Tropicamide in dogs, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Mydriacyl
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| TOPICAL | 1 drop/eye | Single application | Diagnostic | Diagnostic mydriasis | Strong | BSAVA Small Animal Formulary, 10th ed. (2020), Part A - Canine and Feline, printed p.420 (corpus PDF p.436), Tropicamide, DOSES - "Dogs, Cats: 1 drop per eye, repeat after 20-30 min if necessary." Formulary of record retained: Plumb's Veterinary Drug Handbook (9th ed. cited; 10th ed. 2023 held), Tropicamide Ophthalmic, Dosages, printed p.1410 (corpus PDF p.1437) - "Mydriasis (extra-label): 1 to 2 drops repeated in 5 minutes in the eye to be examined to achieve pupillary dilation." |
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Short-acting muscarinic antagonist that blocks the sphincter pupillae muscle, causing mydriasis. Also causes cycloplegia (ciliary muscle paralysis).
Short duration (4-8 hours). Used for diagnostic fundoscopy. May increase IOP — CONTRAINDICATED in glaucoma. Not for therapeutic mydriasis (use atropine for that). Rapid onset (15-20 min).
Species-specific contraindications and adverse-reaction reports for dogs may differ from canine / feline reference data — consult the primary citations listed with each rule.
Tropicamide dose range in dogs, with cited source references: TOPICAL 1 drop/eye Single application. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Tropicamide in dogs: TOPICAL.
Cited course lengths for Tropicamide in dogs include: Diagnostic. Duration depends on the indication — match it to the specific dose rule in the table above.
Tropicamide is indicated in dogs for: Diagnostic mydriasis.
These are general warnings for Tropicamide across species; consult the dog dosing table above for species-specific guidance. Short duration (4-8 hours). Used for diagnostic fundoscopy. May increase IOP — CONTRAINDICATED in glaucoma. Not for therapeutic mydriasis (use atropine for that). Rapid onset (15-20 min).
Why a species-specific page? Tropicamide 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.