Lysine Therapy for Cats

Feline-specific herpes virus is common among cats and can cause conjunctivitis and respiratory illness. It is one of the leading causes of sickness and euthanasia for cats in shelters. The herpes virus resides in the cells and changes the host's DNA, allowing it to replicate throughout the cat's body. Although there is no cure for the herpes virus, the essential amino acid lysine can help reduce its symptoms and the number of stress-induced flare-ups by decreasing virus replication.

  1. Herpes Diagnosis

    • A veterinarian can diagnose feline-specific herpes. Symptoms that appear to be caused by the herpes virus could be caused by a far more serious infection that won't be helped by lysine therapy. Severe herpes outbreaks also should be checked by a veterinarian as they could require antibiotics or antiviral medications in addition to lysine.

    Lysine Therapy

    • Discuss with your veterinarian a proper dosage of lysine for your cat. Over time, you may end up changing the dosage slightly during flare-ups or times of greater stress for your cat. Once you have a dosage, purchase the lysine from a pet store or a health food or drug store. Most lysine supplements for cats come in a 100 mg per dose potency. Most lysine products for humans are available in 500 mg doses per serving. Choose a product with the least amount of added ingredients. If possible, always opt for a lysine powder or capsule instead of a tablet.

      Prepare the lysine by measuring out the proper dosage. If you have lysine capsules, twist open the capsule and carefully pour the desired amount into a measuring spoon. You most will likely have leftover lysine in the capsule. Wrap the partially used capsule in a small amount of plastic wrap to use for the next dose. Store the capsule in the lysine bottle.

      In a small bowl or on a saucer, thoroughly mix the lysine with 1 tsp. of your cat's canned food or some easy-to-mix treat. The amount of food needs to be small so your cat entirely ingests the lysine and doesn't gain weight from the extra food. Finicky cats may prefer their lysine with a small amount of milk or baby food. Place the bowl where your cat usually eats. If your cat is uninterested, encourage it to sniff the mixture. Although lysine has little taste, you may have to be patient while your cat gets used to this new "treat."

      Give your cat a dose of lysine once or twice a day, depending on your veterinarian's recommendation.