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NOW 600 mg Strength NAC with Co-factors
NOW Extra Strength (1000mg) NAC (N-Acetyl Cysteine)

NOW - NAC (N-Acetyl Cysteine)

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Info: Available in 2 Strengths (One with Co-Factors)

N-Acetyl Cysteine (NAC) is a stable form of the non-essential amino acid L-Cysteine, which is a necessary component for forming the potent antioxidant glutathione, and contains sulfur, which acts as a stabilizer for the formation of protein structures. 

Product Notes:

Some of NAC's uses are as a detoxification agent and to protect the liver; as an antidote for acetaminophen overdoses; and to help reduce the course or severity of chronic bronchitis -- the main purpose the manufacturer recommends the 600 mg version for. That version has also been fortified with molybdenum and selenium, two essential trace minerals which not only enhance this formulation's antioxidant potential, but which may also be able to help reduce some of the symptoms of Candida albicans in a combination like this.

There is also an Extra Strength version available featuring 1,000 mg of NAC alone, per tablet.

Study: See, e.g., 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 Apr;1(4):351-5.


Each Capsule of the 600 mg type (NPN: 80006038) contains:
600 mg N-Acetyl Cysteine
50 mcg Molybdenum (from Sodium Molybdate)
25 mcg Selenium (as L-Selenomethionine)
Non-medicinal ingredients: Veg. Capsule (hypromellose, water), Stearic Acid (vegetable source) and Citric Acid.

Each Tablet of the Extra Strength 1000 mg type (NPN: 80052274) contains:
1000 mg N-Acetyl Cysteine
Non-medicinal ingredients: Cellulose, Silica, Stearic Acid, Tablet Coating (hypromellose, cellulose, stearic acid, water).

Suggested Usage:

600 mg version:
Adults: take 1 capsule daily, with a protein-containing meal.

Extra Strength version:
Adults: Take 1 tablet daily with meals.

Store either type in a cool, dry place.


600 mg version:
Do not use if you suffer from cystinuria/cystine kidney stones, or if you are pregnant or breastfeeding. Consult a healthcare practitioner prior to use if you are taking nitroglycerin, acetaminophen, iron supplements, or if you have gout.

Extra Strength version:
Consult a healthcare practitioner prior to use if you are pregnant or breastfeeding, or if you have kidney stones.

Product Options:
600 mg Strength with Co-factors, 100 Veg. Capsules - $26.99 - UPC: 733739800855
1000 mg Strength, 120 Tablets - $46.99 - UPC: 733739801852