This paste supplement is formulated with L-lysine as its active ingredient, delivered in a smooth, caramel-flavored base that cats can take directly or mixed into food. Each 1.25 mL (one quarter teaspoon) portion supplies 250 mg of L-lysine, an amino acid used in nutritional support formulas for feline eye health. The tube is measured out with a standard teaspoon for accurate daily dosing and is intended for cats only. It is manufactured in Canada and packaged in a resealable tube for repeated use over time. No mixing, assembly or refrigeration is required before use. Non-medicinal ingredients include water, xanthan gum, sodium carboxymethyl cellulose, potassium sorbate, caramel, citric acid, saccharin sodium and vitamin B2.