Best Trust for Cats: Our lysine gel for cats uses safe ingredients that are free from grains, alcohol, and gluten, and contains no additives or harmful chemicals. Complete Nutrient Boost for Total Health: Beyond L-Lysine and Taurine, our l lysine cats paste includes B Vitamins (B1, B3, B7) and natural herbs like Burdock Seed to nourish skin, coat, and digestion – supporting vitality in kittens, adults, and senior cats alike.