NOW L-Carnitine is the purest form, clinically tested, and vegetarian (non-animal sourced). (from 1,493 mg L-Carnitine Tartrate). Ingredients Microcrystalline Cellulose, Hydroxypropyl Cellulose, Stearic Acid (vegetable source), Vegetarian Coating, Magnesium Stearate (vegetable source) and Silicon Dioxide.