ExoticRx · exoticrx.com/drugs/dl-methionine
US brand names:Methio-Form, Ammonil
DL-Methionine is dosed at 200–500 mg/cat total PO q12h in cats, per Plumb's Veterinary Drug Handbook, 10th ed (2023) — Plumb's 10th ed printed p.852, Methionine monograph spanning p.852-853. Verify against current literature before clinical use.
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 references:All Cat (Domestic) drugs
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A dog/cat sample is shown here. Cited dosing for all 1 species — reptiles, birds, pocket pets, livestock, and equine — is free on the per-species pages above. Pro adds the weight-based calculator for every species.
| Species | Route | Dose | Frequency | Evidence | Source |
|---|---|---|---|---|---|
| Cat (Domestic) | PO | 200–500 mg/cat total | q12h | Moderate | Plumb's Veterinary Drug Handbook, 10th ed (2023) — Plumb's 10th ed printed p.852, Methionine monograph spanning p.852-853.Compilation only — we have not located an independent source that prints this figure. |
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View PlansSource citations and evidence levels available on the live page. Reference only — verify against current literature before clinical use.