Published dose range
The published veterinary reference range for cimetidine in cats is 2.5-5 mg per kg of body weight, given every 12h.
Source: Merck Veterinary Manual →Vet consult preferred; famotidine is the more common choice.
Skip it or ask a vet first if
many drug interactionskidney disease
If you think you overdosed
Call the Pet Poison Helpline: 855-764-7661 or ASPCA Poison Control: 888-426-4435. Both are staffed 24/7 by veterinary toxicologists.