Cat · Felis catus · typical adult weight 2.50–7.00 kg
Erythromycin is dosed at 10–15 mg/kg PO q8h in cats, per Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.502 (2026-08-01). — Plumb's 10th ed (held) printed p.473, Erythromycin monograph spanning p.473-476; page located 2026-08-05 from the book's own running heads, verified to name the drug in its body text. — SOURCE EDITION: Plumb's Veterinary Drug Handbook — ISBN 9781394172207, https://openlibrary.org/isbn/9781394172207. Erythromycin is used in cats for Susceptible bacterial infections. Routes documented in cats: PO. A typical adult cat weighs 2.50–7.00 kg. ExoticRx lists 1 cited dose rule for Erythromycin in cats, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Erythro-100, Gallimycin
Contraindicated in Chinchilla, Guinea Pig, Rabbit, Hamster, Degu
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| PO | 10–15 mg/kg | q8h | 7-14 days | Susceptible bacterial infections | Moderate | Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.502 (2026-08-01). — Plumb's 10th ed (held) printed p.473, Erythromycin monograph spanning p.473-476; page located 2026-08-05 from the book's own running heads, verified to name the drug in its body text. — SOURCE EDITION: Plumb's Veterinary Drug Handbook — ISBN 9781394172207, https://openlibrary.org/isbn/9781394172207 |
Every held source for this drug and species, as printed. Where they differ, both are shown — the choice is yours, not ours.
The sources disagree for this combination. The ranges below do not overlap on a comparable route. This is not an error in one of them — published veterinary references differ, and reconciling them for a particular patient is a clinical judgement.
| Dose (mg/kg) | Route | Source | As printed |
|---|---|---|---|
| 10–20 | PO | BSAVA Small Animal Formulary, 10th ed — Part A (Canine and Feline)p.169 | 10-20 mg/kg p.o. q8-12h. |
| 0.5–1 | PO | BSAVA Small Animal Formulary, 10th ed — Part A (Canine and Feline)p.169 | 0.5-1 mg/kg p.o. q8h. |
| 10–20 | PO | Papich Saunders Handbook of Veterinary Drugs, 4th edp.327 | • 10-20 mg/kg q8-12h PO. |
| 0.5–1 | PO |
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Binds 50S ribosomal subunit, inhibiting translocation of peptidyl-tRNA, blocking bacterial protein synthesis.
CONTRAINDICATED in rabbits and hindgut fermenters. Prokinetic at sub-antimicrobial doses. GI upset common. Hepatotoxicity reported. Strong CYP inhibitor.
Species-specific contraindications and adverse-reaction reports for cats may differ from canine / feline reference data — consult the primary citations listed with each rule.
Erythromycin dose range in cats, with cited source references: PO 10–15 mg/kg q8h. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Erythromycin in cats: PO.
Cited course lengths for Erythromycin in cats include: 7-14 days. Duration depends on the indication — match it to the specific dose rule in the table above.
Erythromycin is indicated in cats for: Susceptible bacterial infections.
These are general warnings for Erythromycin across species; consult the cat dosing table above for species-specific guidance. CONTRAINDICATED in rabbits and hindgut fermenters. Prokinetic at sub-antimicrobial doses. GI upset common. Hepatotoxicity reported. Strong CYP inhibitor.
Why a species-specific page? Erythromycin 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.
| Papich Saunders Handbook of Veterinary Drugs, 4th edp.327 |
| • Prokinetic effects (GI): 0.5-1 mg/kg q8-12h PO or IV. |
Figures are transcribed from the cited page or table of each held edition and are shown for reference only. They are not dose recommendations, they do not feed the calculator, and none has been reviewed by a veterinarian.