ExoticRx · exoticrx.com/drugs/dl-methionine
US brand names:Methio-Form, Ammonil
DL-Methionine is dosed at 25–50 mg/kg PO q8h in dogs, per Plumb's Veterinary Drug Handbook, 9th Ed. 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) drugsAll Dog (Domestic) drugs
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A dog/cat sample is shown here. Cited dosing for all 2 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.
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View PlansSource citations and evidence levels available on the live page. Reference only — verify against current literature before clinical use.