Antioxidant Support: NAC is a biologically active precursor for the amino acid cysteine which, in turn, is a precursor for glutathione, a tripeptide with antioxidant properties.*
Supports Intracellular Glutathione: Supplementation with N-Acetyl-L-Cysteine is recognized as a safe, highly effective method of increasing healthy intracellular glutathione stores.*
Vitamins/Minerals/Amino Acids: Our vitamins/minerals and amino acid formulas are developed to provide beneficial support in filling nutrient gaps.*
Our uncompromising operational practices at our state-of-the-art manufacturing facilities surpass GMP standards and manufacturing regulations. All of our products are GMO-free.
For 65 years, Douglas Laboratories has been dedicated to meeting the needs of healthcare professionals. As a globally recognized leader in the development of innovative, science-based nutritional supplements, we strive to help healthcare professionals and their patients push their potential to live healthier, today and in the future.*

Gcrepezzi (comprador verificado) –
superior quality brand
Douglas Labs is a trusted, superior quality brand.
Margery Ellsworth (comprador verificado) –
Great product. Excellent brand
Great product. Excellent brand. Usually I don’t believe reviews that praise a particular brand–but in this case I tried NAC from at least one other company and got tachycardia. Didn’t get it with this brand. It is a miracle against vaginal yeast infections! Really has made a HUGE difference for me! No symptoms after 3 days!
Carra (comprador verificado) –
Five Stars
Great brand, excellent product. Also great value.
John and Tina (comprador verificado) –
very good product.
Very good product. will purchase again.
Amazon Customer (comprador verificado) –
Eliminates congestion and helps calm Lupus.
I use this for COPD. Works wonders to eliminate deep congestion.
Carla J. (comprador verificado) –
Awesome!
It helps me turn my brain on at night!
Brian I (comprador verificado) –
Didn’t work for me
Did nothing for me.
Rosa54 (comprador verificado) –
Buen producto
Noto mucha mejoría en el cabello y el estado general de la piel