Jarrow NAC Sustain 500 mg 60 Veg. Caps

N-Acetyl-L-Cysteine Antioxidant and Glutathione Precursor* Supports Liver and Lung Function*  Optimized Release N-Acetyl-L-Cysteine Tablets SUSTAIN™ Bilayer Release Technology 1/3 quick, 2/3 sustained release 9,000+ References on PubMedPatented Formula: US 6,623,754 Detoxification, oxidative stress protection* NACΓÇêSustain® is in a special Sustain™ bilayer Quick Release/Sustained Release format of N-Acetyl-L-CysteineΓÇê(NAC), a powerful antioxidant amino acid and a precursor to the critical antioxidant glutathione.* Glutathione exerts a variety of protective effects, including detoxification and intracellular defense against oxidative stress.* Substances known to reduce glutathione status are acetaminophen and alcohol.* The advanced bilayer Sustain™ tablets combine 1/3 Quick Release and 2/3 Sustained Release formats to both immediately raise and to maintain blood levels over a longer period of time.* NAC Sustain® releases in the small intestine over a 8 hour period, compared to the 1.5 hour biological half-life of NAC in the bloodstream.* Protected by U.S. Patent # 6,623,754. Keep out of the reach of children. Suggested UsageTake 1 tablet 1 to 2 times per day, preferably on an empty stomach with fruit juice or as directed by your qualified healthcare professional. NOTE: Prolonged or elevated intake may alter liver function tests without affecting actual liver function. Inform your physician that you are ingesting NAC if you undergo liver function tests. Other IngredientsCarbomer, cellulose, calcium phosphate, beet root powder (for color), stearic acid (vegetable source), magnesium stearate (vegetable source), silicon dioxide and an aqueous-based coating. No wheat, no gluten, no soybeans, no dairy, no egg, no fish/shellfish, no peanuts/tree nuts.