N-Acetyl L-Cysteine (NAC) Powder

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  • N-Acetyl L-Cysteine NAC Powder
  • N-Acetyl L-Cysteine (NAC) Powder


N-acetylcysteine (abbreviated as NAC) is a compound that is found naturally in the body. It is a precursor to a chemical called glutathione, which plays a large role in detoxification of foreign substances in the body. NAC itself is a strong antioxidant; it can neutralize free radicals that damage DNA and cells.

Directions & Allergens

Suggested Use: 

back-how-to-use-500g-cropped.pngAs a dietary supplement, take 600 mg (scant ~1/4 tsp) mixed with 8 ounces of water or suitable beverage. Taken 1 - 2 times daily, preferably on an empty stomach or as directed by your qualified health professional.


This product contains no Soy, Dairy, Dairy byproducts, Eggs, Fish, Shellfish, Wheat, Gluten, Tree Nuts, or Sesame Seeds.


This is a NON-GMO ingredient manufactured using organic starting ingredients.


Store in a cool, dry place. Re-seal zipper immediately after use to preserve freshness.

Statements & Warnings

† These statements have not been evaluated by the Food & Drug Administration. This product is not intended to diagnose, treat, cure or prevent any diseases.

Keep out of the reach of children. Do not take this or any other supplement if under the age of 18, pregnant or nursing a baby, or if you have any known or suspected medical conditions and/or taking prescription drug(s) or OTC medication(s). Always consult with a qualified health physician before taking any new dietary supplement.

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11 Reviews

  • 5
    Love this!

    Posted by Julie Mills on 19th Jul 2019

    It’s not easy to find N-acetyl-cysteine in powder form (in my experience) so I’m thrilled to have this! I want to amp up glutathione in my body and this is the ticket! Love it!

  • 5
    very good formulation,,,,,not very strong smell like other brands.

    Posted by Eli Nemer on 28th Mar 2019

    very good formulation,,,,,not very strong smell like other brands.

  • 5
    No side effects

    Posted by Jay on 2nd Jun 2016

    When I try any supplement I always start slow and increase the dosage. Hard Rhino NAC seems to be safe without and side effects. Well as to the benefits time will tell. I am taking this to increase my glutathione levels.

  • 5
    Hard Rhino amino powders are the best I've found

    Posted by Jason on 22nd Sep 2015

    I can say briefly the NAC is very good, but in general I have been using Hard Rhino's amino powders now probably for about 2 years maybe longer and for me personally they are the best and most purest amino powders I've ever taken and I have tried lots of brands and have had various issues with some of them but I have never had a problem with Hard Rhino's amino powders so I can very highly recommend them. I've been supplementing my diet now for 3 years with various amino acids everyday and I have not been sick or had any kind of cold in 3 years so I am strong believer in amino acid supplementation and Hard Rhino is among the very best if not the best. If you want to stay healthy, mentally strong, physically fit , build a better body or improve in your athletic ability buy Hard Rhino products to supplement with a healthy food diet you will be well rewarded.

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