Health & WellbeingIs human lysine safe for cats? My vet prescribed it, but it's costly.
I would also like to add that sourcing is a big issue for supplements. Apart from the palatabity, some companies are better than others. If you choose this route, make sure you speak with someone in a supplement specialty store about reputation. Since there is no governing body for supplements, contaminants are possible.
Updated on November 25th, 2025