12/case directions: as a dietary supplement for adults, take one (1) to four (4) capsules daily with or without food. Higher intake may be beneficial, as recommended by a nutritionally informed physician. Individuals with thyroid problems or on anti-coagulant therapy should consult their physician before using this product. Serving size: one (1) capsule ingredients: acetyl-l-carnitine 500 mg (from 588 mg acetyl-l-carnitine hcl supplied by sigma tau) other ingredients: stearic acid, cellulose, magnesium silicate, silicon dioxide, gelatin (capsule). 02/22/17