Healthy cell function: The active compounds found in graviola leaves have free radical severing properties Double strength: This double strength product has twice as much graviola (1000 mg per tablet) as our regular strength product (500 mg per capsule). Certifications/ratings: corn-free, dairy-free, egg-free, gluten-free, GMO-free, nut-free, soy-free, Kosher, vegan Guaranteed GMP Quality: NPA A-rated GMP certification means that all aspects of the Now manufacturing process have been examined, including our laboratory/testing methods (for stability, potency and product formulation).