ExoticRx · exoticrx.com/drugs/gamithromycin
US brand names:Zactran
Gamithromycin is dosed at 6 mg/kg SC Single dose in dogs, per Plumb's Veterinary Drug Handbook, 9th Ed. Verify against current literature before clinical use.
Semi-synthetic 15-membered azalide macrolide. Binds 50S ribosomal subunit, inhibiting protein synthesis. Excellent tissue concentration and long half-life.
Primarily cattle/swine. Fatal in horses (colitis). Single injection provides 7+ day coverage. SC injection in neck. Not for companion animal use generally.
Species references:All Cat (Domestic) drugsAll Cattle (Beef/Dairy) drugsAll Dog (Domestic) drugs
Each ExoticRx dose rule is graded by the strength of its primary evidence — see the editorial process.
A dog/cat sample is shown here. Cited dosing for all 3 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) | SC | 6 mg/kg | Single dose | Extrapolated | Plumb's Veterinary Drug Handbook, 9th Ed |
| Cat (Domestic) | SC | 6 mg/kg | Single dose | Extrapolated | Plumb's Veterinary Drug Handbook, 9th Ed |
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View PlansSource citations and evidence levels available on the live page. Reference only — verify against current literature before clinical use.