N-Acetyl-L-Cysteine 90 caps Dietary Supplement ProThera products may only be purchased by Health Care Professionals. Patients who want to buy ProThera products may obtain them from their Health Care Professional. N-acetyl-L-cysteine is a sulfur-containing compound thus a sulfur odor can be a normal characteristic of this product. Supplement Facts Serving Size 1 Capsule Servings Per Container 90 Amount Per Capsule N-Acetyl-L-Cysteine USP 500 mg Other ingredients: Vegetarian capsule (hydroxypropyl methylcellulose water) cellulose L-leucine and silicon dioxide. Free of the following common allergens: milk/casein eggs fish shellfish tree nuts peanuts wheat/gluten corn yeast and soybeans. Contains no artificial colors flavors or preservatives. Suggested Use: 1 to 2 capsules daily. It is recommended that this product be taken with a multiple vitamin and mineral supplement. Do not use if full-bottle shrinkwrap is broken or missing. Store in a cool dry place (59 F-85 F) away from direct light. KEEP OUT OF REACH OF CHILDREN. This product was made in a GMP and ISO 9001:2008 registered facility.