Cat · Felis catus · typical adult weight 2.50–7.00 kg
L-Lysine is used in cat for Feline herpesvirus-1 (FHV-1) management. Routes documented in cat: PO. A typical adult cat weighs 2.50–7.00 kg. ExoticRx lists 1 cited dose rule for L-Lysine in cat, drawn from published veterinary references. Verify against current literature before clinical use.
Trade names: Enisyl-F, Viralys
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| PO | 250–500 mg/cat | q12-24h | Long-term supplementation | Feline herpesvirus-1 (FHV-1) management | Weak | Plumb's Veterinary Drug Handbook, 9th Ed |
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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.
Competes with arginine for absorption and incorporation. Theoretically suppresses herpesvirus replication by reducing arginine availability needed for viral protein synthesis.
Efficacy debated in recent studies. Generally very safe. May cause GI upset at high doses. Commonly used for FHV-1 in cats despite limited evidence.
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? L-Lysine 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.