Cat · Felis catus · typical adult weight 2.50–7.00 kg
DL-Methionine is used in cat for Urinary acidification (struvite prevention). Routes documented in cat: PO. A typical adult cat weighs 2.50–7.00 kg. ExoticRx lists 1 cited dose rule for DL-Methionine in cat, drawn from published veterinary references. Verify against current literature before clinical use.
Trade names: Methio-Form, Ammonil
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| PO | 200–500 mg/cat total | q12h | Long-term maintenance; monitor urine pH (target 6.0-6.5) | Urinary acidification (struvite prevention) | Moderate | Plumb's Veterinary Drug Handbook, 9th Ed |
Absolute dose ceiling, regardless of body weight: 500 mg total (PO).
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.
Essential amino acid metabolized to sulfuric acid, lowering urine pH. Acidic urine inhibits struvite crystal formation and some bacterial growth.
Contraindicated in cats with hepatic lipidosis or metabolic acidosis. Monitor urine pH regularly. Overdose can cause Heinz body anemia in cats.
Species-specific contraindications and adverse-reaction reports for cat may differ from canine / feline reference data — consult the primary citations listed with each rule.
Why a species-specific page? DL-Methionine 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.