Viralys gel by Vetoquinol is an oral L-Lysine HCl nutritional supplement formulated specifically for cats. Each mL provides 200 mg of L-Lysine to support feline immune health, making it a reliable addition to your cat supplements routine. The oral gel format offers a convenient way to provide daily wellness support for cats. Supplied in a 142 g tube and available without a prescription in Canada, it fits easily into your cat health & wellness plan.