N-Acetyl Glucosamine (NAG) from vegan source. NAG has glucosamine attached to an acetic acid molecule, whereas glucosamine sulfate has it attached to a sulfuric acid molecule. Although research suggests that glucosamine sulfate is better absorbed than NAG, individuals sensitive to sulfur may tolerate NAG better. Serving Size: 1 Vegetable Capsule Servings Per Container: 90 Amount Per Serving: N-Acetyl-D-Glucosamine Other Ingredients: Hydroxypropyl methylcellulose, microcrystalline cellulose, L-leucine As a dietary supplement, 1 capsule three times daily, or as directed by a healthcare practitioner. Keep in a cool, dry place, tightly capped.