Amoxicillin for Cat
Cat · Felis catus · typical adult weight 2.50–7.00 kg
Amoxicillin is used in cat for Bacterial infections (skin, UTI, dental, respiratory), Dental infections, Feline lower urinary tract disease (bacterial), Upper respiratory infection. Routes documented in cat: PO. A typical adult cat weighs 2.50–7.00 kg. ExoticRx lists 4 cited dose rules for Amoxicillin in cat, drawn from published veterinary references. Verify against current literature before clinical use.
Trade names: Amoxi-Tabs, Amoxil
Dose ranges
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| PO | 10–25 mg/kg | q8-12h | 7-14 days | Bacterial infections (skin, UTI, dental, respiratory) | Strong | Plumb's Veterinary Drug Handbook, 9th Ed |
| PO | 15–25 mg/kg | q8h | 7-10 days | Dental infections | Strong | Plumb's Veterinary Drug Handbook, 9th Ed |
| PO | 15–22 mg/kg | q12h | 7-14 days | Feline lower urinary tract disease (bacterial) | Strong | Plumb's Veterinary Drug Handbook, 9th Ed |
| PO | 10–22 mg/kg | q8-12h | 7-14 days | Upper respiratory infection | Strong | Plumb's Veterinary Drug Handbook, 9th Ed |
Need the exact dose for your patient?
These ranges are per kg. Enter your cat's weight to get the precise dose and draw-up volume — unit and concentration math done for you.
Mechanism of action
Inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs).
Side effects & warnings
CONTRAINDICATED in rabbits, guinea pigs, and hamsters (fatal dysbiosis). May cause GI upset. Cross-reactivity with other beta-lactams.
Species-specific contraindications and adverse-reaction reports for cat may differ from canine / feline reference data — consult the primary citations listed with each rule.
Other Antibiotic drugs with cat dosing
Amoxicillin dosing in other species
Why a species-specific page? Amoxicillin pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in cat — 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.