ExoticRx · exoticrx.com/drugs/cephapirin
Cephapirin
Cefa-Lak, Cefa-Dri, ToDay, ToMorrow
Drug Class
Routes
Indications
Mechanism of Action
Inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs). First-generation cephalosporin with activity against gram-positive cocci and some gram-negative bacteria.
Side effects & warnings
Cross-allergenicity with other beta-lactams possible. Adjust dose in renal impairment. Primarily used for bovine mastitis; limited companion animal data.
Species with Cephapirin dosing data (2 dose rules)
Evidence levels across 2 dose rules
Each ExoticRx dose rule is graded by the strength of its primary evidence — see the editorial process.
Backed by a published primary source
- · Plumb's Veterinary Drug Handbook, 9th Ed; FDA openFDA Adverse Event Database
Sample dosing (2 of 2 cited rules)
Free-tier preview — dog and cat dosing. Pro and Student unlock all 2 species including reptiles, birds, pocket pets, livestock, and equine.
| Species | Route | Dose | Frequency | Evidence | Source |
|---|---|---|---|---|---|
| Dog (Domestic) | IM | 10–30 mg/kg | q6-8h | Extrapolated | Plumb's Veterinary Drug Handbook, 9th Ed; FDA openFDA Adverse Event Database |
| Cat (Domestic) | IM | 10–30 mg/kg | q6-8h | Extrapolated | Plumb's Veterinary Drug Handbook, 9th Ed; FDA openFDA Adverse Event Database |
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Source citations and evidence levels available on the live page. Reference only — verify against current literature before clinical use.