Enisyl-F is an oral paste L-Lysine HCL Nutritional Supplement for cats. It is used for treatment of Feline Herpes Virus (FHV-1). Enisyl-F is a palatable lysine base that comes in a unique pump for easy administration. Helps lessen the frequency and severity of FHV-1 infections. Highly palatable base Safe, easy-to-administer and affordable Suitable for kittens and adult cats Ingredients: Purified water, L-Lysine HCL, sorbitol, cod liver oil, xanthan gum, tuna flavor, soya lecithin, silica aerogel, caramel color, potassium sorbate, sodium benzoate. Administration: Adult cats: 1 to 2 mL twice a day Kittens: 1 mL twice a day, or as recommended by your veterinarian. Each pressure represents 1 mL of Enisyl-F paste. Enisyl-F is extremely tasty and is easily accepted by most cats. It can be applied directly in the mouth, on the nose or on the paw where it can be licked off. Alternatively, you may add the product to your cat's food, if more convenient.