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 Tsang Nutrition

Home of Natural Remedies & Nutritional Information

NAC (N-Acetyl-L-Cysteine) from ITI (Integrative therapeutics Inc)

Dosage: 600 mg Size: 60 capsules.


Take 1 capsule once or twice daily.

Ingredient per serving size of 1 Capsule

NAC (N-Acetyl L-Cysteine) 600 mg

Other Ingredients

gelatin capsule (gelatin and water) and rice flour.

Contains No sugar, salt, yeast, wheat, gluten, corn, soy, dairy products, artificial coloring, artificial flavoring or preservatives. This product contains natural ingredients; color variations are normal.


If pregnant, nursing, or taking prescription drugs, consult your healthcare practitioner prior to use.

This product is a sulphur-containing compound and may emit an odor.

Distributed by an FDA-registered Drug Establishment.

About NAC (N-Acetyl-Cysteine)

NAC is a highly potent antioxidant that complements the body's own free-radical fighting ability.

NAC (N-Acetyl L-Cysteine) acts as a free-radical scavenger and inhibits the production of reactive oxygen species which can damage cellular structures. It also helps replenish intracellular glutathione, another vital cellular antioxidant produced by the body. Supplemental NAC is well absorbed, so it can be counted on to support against oxidative stress..

Evidence suggests that regular use of N-acetyl-cysteine (NAC) is helpful for individuals with chronic bronchitis, a condition commonly associated with smoking and emphysema. NAC is a natural expectorant which help thin mucus and loosen phlegm and bronchial secretions. NAC may also be helpful in a life-threatening condition called acute respiratory distress syndrome.

Scientific Studies

Chronic Bronchitis

Individuals who have smoked cigarettes for many years eventually develop deterioration in their lungs leading to various symptoms, including chronic production of thick mucus. This so-called chronic bronchitis tends to flare up periodically into severe acute attacks possibly requiring hospitalization. Regular use of NAC may diminish the number of these attacks. A review and meta-analysis selected eight double-blind placebo-controlled trials of NAC for chronic bronchitis. 1-9 The results of these studies, involving a total of about 1,400 individuals, suggest that NAC taken daily at a dose of 400 to 1,200 mg can reduce the number of acute attacks of severe bronchitis.


1. Grandjean EM, Berthet P, Ruffmann R, et al. Efficacy of oral long-term N-acetylcysteine in chronic bronchopulmonary disease: a meta-analysis of published double-blind, placebo-controlled clinical trials. Clin Ther. 2000;22:209-221.

2. Hansen NCG, Skriver A, Brorsen-Riis L, et al. Orally administered N-acetylcysteine may improve general well-being in patients with mild chronic bronchitis. Respir Med. 1994;88:531-535.

3. Grassi C, Casali L, Rossi A, et al. A comparison between different methods for detecting bronchial hyperreactivity. Bronchial hyperreactivity: methods of study. Eur J Respir Dis Suppl. 1980;106:19-27.

4. Grassi C, Morandini GC. A controlled trial of intermittent oral acetylcysteine in the long-term treatment of chronic bronchitis. Eur J Clin Pharmacol. 1976;9:393-396.

5. Riise GC, Larsson S, Larsson P, et al. The intrabronchial microbial flora in chronic bronchitis patients: a target for N-acetylcysteine therapy? Eur Respir J. 1994;7:94-101.

6. Rasmussen JB, Glennow C. Reduction in days of illness after long-term treatment with N-acetylcysteine controlled-release tablets in patients with chronic bronchitis. Eur Respir J. 1988;1:351-355.

7. Parr GD, Huitson A. Oral fabrol (oral N-acetylcysteine) in chronic bronchitis. Br J Dis Chest. 1987;81:341-348.

8. Boman G, Bäcker U, Larsson S, et al. Oral acetylcysteine reduces exacerbation rate in chronic bronchitis: report of a trial organized by the Swedish Society for Pulmonary Diseases. Eur J Respir Dis. 1983;64:405-415.

9. Verstraeten JM. Mucolytic treatment in chronic obstructive pulmonary disease. Double-blind comparaive clinical trial with N-acetylcysteine, bromhexine and placebo. Acta Tuberc Pneumol Belg. 1979;70:71-80.

10. Ardissino D, Merlini PA, Savonitto S, et al. Effect of transdermal nitroglycerin or N-acetylcysteine, or both, in the long-term treatment of unstable angina pectoris. J Am Coll Cardiol. 1997;29:941-947.

11. Estensen RD, Levy M, Klopp SJ, et al. N-acetylcysteine suppression of the proliferative index in the colon of patients with previous adenomatous colonic polyps. Cancer Lett. 1999;147:109-114.

12. Kinscherf R, Fischbach T, Mihm S, et al. Effect of glutathione depletion and oral N-acetyl-cysteine treatment on CD4+ and CD8+ cells. FASEB J. 1994;8:448-451.

13. Akerlund B, Jarstrand C, Lindeke B, Sonnerborg A, Akerblad C, Rasool O. Effect of N-acetylcystine (NAC) treatment on HIV-1 infection: a double-blind placebo-controlled trial. Eur J Clin Pharmacol. 1996;50:457-461.


NAC appears to be a very safe supplement when taken as directed. Safety in young children, women who are pregnant or nursing, and individuals with severe liver or kidney disease has not been established. Keep out of the reach of children

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N-Acetyl-Cysteine (NAC) 600mg 60 cap $17 Add To Cart

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This is a statement of nutritional support. This statement has not been evaluated by the FDA. This product is not intended to medically diagnose, treat, cure, or prevent any disease. Always consult your health care provider before using any supplement.

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