Filter Results

NAC (N-Acetyl-Cysteine)

Cysteine/NAC (N-acetylcysteine) Information

L-cysteine is a sulfur-bearing amino acid that occurs naturally in protein foods. When used as a supplement, N-acetylcysteine (NAC) is the preferred form of l-cysteine because it is more stable and more easily absorbed. Sufficient amounts of l-cysteine are usually available through the diet in such high protein foods as cottage cheese, yogurt, various meats, granola and wheat germ.

Health Benefits of L-cysteine and NAC

L-cysteine is a precursor to the antioxidant glutathione, which is severely depleted by toxic burdens placed upon the liver by drugs, alcohol, pollution, smoke and industrial chemicals. In a clinical setting, the NAC form of l-cysteine is sometimes used to counteract overdoses of specific substances like acetaminophen.1 L-cysteine is also used by itself and in combination with other nutrients to support more robust hair growth; hair is about 8% cysteine by weight.2

Usage Cysteine and NAC

Use as directed. L-cysteine is available in capsule, tablet and powder form.

Side-effects and Cautions:

Mild gastrointestinal discomfort or rash may occur in some. May cause headaches, especially in those taking nitrates for the treatment of angina. Children or pregnant/nursing women should not take l-cysteine or NAC except under the advice of a physician. l-cysteine or NAC supplements are not recommended for those prone to kidney stones.

1. Toxicology. 2008 Feb 3;244(1):25-34. Epub 2007 Nov 7.
2. J Invest Dermatol. 1993 Jul;101(1 Suppl):56S-59S.

Body First

NAC (600mg) 100 vcaps

セール価格 $9.89

ディスカウント% 66%



NAC (1,000mg) 120 tabs

セール価格 $15.79

ディスカウント% 47%


Source Naturals

N-Acetyl Cysteine

2 Options from $7.79 - $29.99

ディスカウント% up to 37%


Life Extension

N-Acetyl-L-Cysteine (600mg) 60 vcaps

セール価格 $10.00

ディスカウント% 29%



NAC Sustain 100 tabs

セール価格 $17.89

ディスカウント% 36%


Country Life

NAC N-Acetyl Cysteine (750mg) 60 vcaps

セール価格 $15.39

ディスカウント% 37%



NAC w/ Selenium & Molybdenum

2 Options from $9.49 - $17.29

ディスカウント% up to 57%