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S-Adenosylmethionine for Cat

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

S-Adenosylmethionine is used in cat for Hepatic support, Hepatoprotection, cognitive dysfunction. Routes documented in cat: PO. A typical adult cat weighs 2.50–7.00 kg. ExoticRx lists 2 cited dose rules for S-Adenosylmethionine in cat, drawn from published veterinary references. Verify against current literature before clinical use.

Trade names: Denosyl, SAMe

Dose ranges

RouteDoseFrequencyDurationIndicationEvidenceSource
PO20 mg/kgq24hLong-termHepatic supportModeratePlumb's Veterinary Drug Handbook, 9th Ed
PO20–40 mg/kgq24h on empty stomachLong-termHepatoprotection, cognitive dysfunctionModeratePlumb's Veterinary Drug Handbook, 9th Ed

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Mechanism of action

Methyl donor and precursor to glutathione synthesis. Supports hepatocellular glutathione levels, membrane fluidity, and antioxidant defense. Also has anti-inflammatory properties.

Side effects & warnings

Give on empty stomach (food reduces absorption by 70%). Enteric coating must not be broken. Well-tolerated. Used for hepatic support and as antioxidant. Not a substitute for specific hepatic therapy.

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

Other Gastrointestinal drugs with cat dosing

S-Adenosylmethionine dosing in other species

Why a species-specific page? S-Adenosylmethionine 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.