Lysine 250 30ml # FP10049When fed to cats with FHV 1, L lysine has been shown to be effective in supporting the lessening of the severity of symptoms and reducing viral shedding (or transmission). Feline herpes virus, one of the most common causes of respiratory infections and eye problems in cats, can be transmitted from cat to cat through discharge from the nose, eyes or mouth and also through litter boxes, water dishes and food. The most common symptoms of FHV 1 in kittens