ExoticRx · exoticrx.com/drugs/famotidine
Famotidine
Pepcid
Drug Class
Routes
Indications
Mechanism of Action
Competitively blocks histamine H2 receptors on parietal cells, reducing basal and stimulated gastric acid secretion.
Side effects & warnings
Generally well-tolerated. Adjust dose in renal impairment. Less effective than proton pump inhibitors at acid suppression.
Species with Famotidine dosing data (16 dose rules)
Species references:All African Grey Parrot drugsAll Bearded Dragon drugsAll Cat (Domestic) drugsAll Dog (Domestic) drugsAll Ferret drugsAll Guinea Pig drugsAll Horse (Equine) drugsAll Rabbit (Domestic) drugs
Evidence levels across 16 dose rules
Each ExoticRx dose rule is graded by the strength of its primary evidence — see the editorial process.
Backed by 3 published sources
- · Carpenter's Exotic Animal Formulary, 6th Ed
- · ExoticRx 2026 (ferret dosing guide); Carpenter 6e
- · Plumb's Veterinary Drug Handbook, 9th Ed
Sample dosing (2 of 16 cited rules)
A dog/cat sample is shown here. Cited dosing for all 8 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.
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Source citations and evidence levels available on the live page. Reference only — verify against current literature before clinical use.