(Vetoquinol) Viralys Gel contains L-Lysine to help manage the symptoms of feline herpes virus, including sneezing, watery eyes and nasal discharge. L- Lysine is an amino acid that has been shown to reduce the severity and duration of feline herpes virus infections. Cats remain a carrier of feline herpes virus throughout their life. Viralys Gel can help manage the condition and prevent flare-ups. Viralys Gel can be safely administered for as long as required. Each 1.25 ml (1/4 tsp.) provides 250 mg L-Lysine in a palatable flavor base that appeals to cats. Give cats 1.25 ml (1/4 tsp.) twice daily. Give kittens 0.625 ml (1/8 tsp.) twice daily.