Nickers BIO-COAT 6 oz Helpful & effective for: dry skin, constant scratching, dull thin coat, excessive shedding. Contains biotin and essential fatty acids plus a wide spectrum of vitamins and minerals. Contains no artificial flavors, colors or preservatives. Each scoop contains 1.5 mg (1500 mcg) of Biotin. Feed 1/4 teaspoon (scoop provided) per 30 lbs of weight. 2 to 4 months supply for dogs 30-90 lbs and 4 months supply for all cats.