Mr. Stud  8oz Contains 300mg of L-Lysine and 20mg of DMG per teaspoon Supports immune system function; collagen formation; tissue repair; antioxidant activity and antibody lymphocyte production Highly palatable immune support for cats A natural supplement formula to help support the health and virility of the breeding stud. Increase your stud dogs stamina and virility with all natural Mr Stud. Easy to Use!