Cefadroxil for Cats

Cat · Felis catus · typical adult weight 2.50–7.00 kg

Cefadroxil is dosed at 22 mg/kg PO q24h in cats, per CEFA-DROPS - cefadroxil suspension [US product label]. Duluth, GA: Boehringer Ingelheim Animal Health USA Inc.; 2017. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=1999084a-124c-45f9-801f-416a1b942c96; CEFA-TABS - cefadroxil tablet [US product label]. Duluth, GA: Boehringer Ingelheim Animal Health USA Inc; 2017. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=1999084a-124c-45f9-801f-416a1b942c96 — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.227 (2026-08-01).. Cefadroxil is used in cats for Skin and soft tissue infections. Routes documented in cats: PO. A typical adult cat weighs 2.50–7.00 kg. ExoticRx lists 1 cited dose rule for Cefadroxil in cats, drawn from published veterinary references. Verify against current literature before clinical use.

US trade names: Duricef

Contraindicated in Rabbit, Guinea Pig, Chinchilla, Hamster, Degu

Rabbit: Oral beta-lactams cause fatal dysbiosis in rabbitsOral amoxicillin (and other oral beta-lactams) selectively destroy gram-positive hindgut flora in rabbits, allowing Clostridium spiroforme overgrowth and fatal enterotoxemia. Never administer oral beta-lactams to rabbits. Parenteral administration carries a lower risk than the oral route, but is not established as safe in rabbits.
Guinea Pig: Oral beta-lactams cause fatal dysbiosis in guinea pigsOral amoxicillin reliably causes Clostridium difficile-mediated fatal enterotoxemia in guinea pigs. Same mechanism as in rabbits. Parenteral administration carries a lower risk than the oral route; parenteral ceftiofur specifically has been given to guinea pigs and chinchillas without adverse effect.
Chinchilla: Oral beta-lactams cause fatal dysbiosis in chinchillasChinchillas are hindgut fermenters with the same flora dependence as rabbits and guinea pigs. Oral penicillins and oral cephalosporins trigger Clostridium overgrowth and fatal enterotoxemia. Never give oral beta-lactams; parenteral routes and trimethoprim-sulfa, fluoroquinolones, or chloramphenicol are the safer choices.
Hamster: Oral beta-lactams cause fatal enterocolitis in hamstersHamsters are exquisitely susceptible to antibiotic-associated Clostridium difficile enterocolitis — the hamster is the classic laboratory model for it. Oral penicillins and cephalosporins are reliably fatal. Never administer oral beta-lactams.
Degu: Oral beta-lactams risk fatal dysbiosis in degusDegus are caviomorph hindgut fermenters closely related to chinchillas and guinea pigs. Degu-specific data is limited, so this warning is extrapolated from those related hystricomorphs — but the shared physiology makes oral beta-lactam enterotoxemia the expected outcome. Treat as contraindicated; use the safer alternatives.

Dose ranges

Route	Dose	Frequency	Duration	Indication	Evidence	Source
PO	22 mg/kg	q24h	7-14 days	Skin and soft tissue infections	Moderate	CEFA-DROPS - cefadroxil suspension [US product label]. Duluth, GA: Boehringer Ingelheim Animal Health USA Inc.; 2017. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=1999084a-124c-45f9-801f-416a1b942c96; CEFA-TABS - cefadroxil tablet [US product label]. Duluth, GA: Boehringer Ingelheim Animal Health USA Inc; 2017. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=1999084a-124c-45f9-801f-416a1b942c96 — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.227 (2026-08-01).

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Mechanism of action

Inhibits bacterial cell wall synthesis by binding to PBPs. Bactericidal against gram-positive and some gram-negative bacteria.

Side effects & warnings

GI upset possible. Avoid in animals with known cephalosporin hypersensitivity. Adjust dose in renal impairment.

Species-specific contraindications and adverse-reaction reports for cats may differ from canine / feline reference data — consult the primary citations listed with each rule.

Frequently asked questions

What is the dose of Cefadroxil for Cats?

Cefadroxil dose range in cats, with cited source references: PO 22 mg/kg q24h. Reference ranges from cited sources — verify against current literature before clinical use.

How is Cefadroxil administered in Cats?

Documented routes for Cefadroxil in cats: PO.

How long is Cefadroxil given in Cats?

Cited course lengths for Cefadroxil in cats include: 7-14 days. Duration depends on the indication — match it to the specific dose rule in the table above.

What conditions does Cefadroxil treat in Cats?

Cefadroxil is indicated in cats for: Skin and soft tissue infections.

What are the side effects of Cefadroxil in Cats?

These are general warnings for Cefadroxil across species; consult the cat dosing table above for species-specific guidance. GI upset possible. Avoid in animals with known cephalosporin hypersensitivity. Adjust dose in renal impairment.

Other Antibiotic drugs with cat dosing

Amikacin Amoxicillin Amoxicillin Injectable Amoxicillin-Clavulanate Ampicillin Azithromycin Aztreonam Bacitracin Carbenicillin Cefaclor Cefazolin Cefdinir

Cefadroxil dosing in other species

Dogs

See all species for Cefadroxil See all drugs for Cats

Why a species-specific page? Cefadroxil pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in cats — 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.