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Natural Factors

NAC, N-Acetyl-L Cysteine, 500 mg, 90 Vegetarian Capsules

4.8 · 8122 reviews
1,528 ₽

Dietary Supplement Free Form Amino Acid Healthy Liver & Lungs Purity & Potency Guaranteed N-Acetyl-L-Cysteine (NAC) is a highly stable form of cysteine and is a precursor in the body to the critical antioxidant glutathione. It provides antioxidant support and is especially beneficial for active people, the elderly, and those exposed to polluted environments. Helps reduce oxidative stress during exercise, and supports immune function. Natural factors amino acids are the highest quality pharmaceutical grade products available. Isura™: ​ Non-GMO: Documentation ✔ Mass Spec: Lab Tested ✔

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Dietary Supplement Free Form Amino Acid Healthy Liver & Lungs Purity & Potency Guaranteed N-Acetyl-L-Cysteine (NAC) is a highly stable form of cysteine and is a precursor in the body to the critical antioxidant glutathione. It provides antioxidant support and is especially beneficial for active people, the elderly, and those exposed to polluted environments. Helps reduce oxidative stress during exercise, and supports immune function. Natural factors amino acids are the highest quality pharmaceutical grade products available. Isura™: ​ Non-GMO: Documentation ✔ Mass Spec: Lab Tested ✔

Customer reviews

5.0
verified purchase

N-Acetyl-L-Cysteine (NAC) is a highly stable form of cysteine and is a precursor in the body to the critical antioxidant glutathione. It provides antioxidant support and is especially beneficial for active people, the elderly, and those exposed to polluted environments. Helps reduce oxidative stress during exercise, and supports immune function.

8/18/2026
5.0
verified purchase
fantastic

this is a great NAC product. Some other that I've tried were a bit too acidic, I find this is just right. Great for combatting inflammation, or in my case allergies.

2/22/2026
5.0
verified purchase

Always a must to have before going to sauna. Works amazing. Trust this brand

2/5/2026
5.0
verified purchase

This is one of my non-negotiable supplements for overall wellness. I recommended this to my friends who drink alcohol as it protects the liver from alcohol damage according to studies. NAC work wonders!

12/29/2025
5.0
verified purchase
Прекрасно!

Thank you very much for this product, it suited me, I like the packaging, comfortable and stylish, I will order more of these products, and recommend them to all my friends and relatives! good!!

11/25/2025
5.0
verified purchase
Reliable NAC with clean ingredients

I’m very happy with this Natural Factors NAC 500 mg. The vegetarian capsules are easy to swallow and gentle on my stomach. I like that the formula is simple, non-GMO and free from common allergens and unnecessary additives. I use it for extra antioxidant and immune support, especially during busy or stressful periods, and it feels like a solid addition to my daily routine. Great value and quality from a brand I trust.

11/22/2025
5.0
verified purchase
NAC

This is a great quality NAC supplement. I have long trusted Natural Factors products. This one does not smell so heavily of eggs, which I can appreciate. Great for virus season, as well as general detox and chelation. Lots of benefits. I would caution everyday use, especially in oncology populations.

11/17/2025
4.0
verified purchase

NAC is known Antioxidant & Anti-inflammatory: NAC helps the body produce glutathione, a powerful antioxidant that protects cells from damage by free radicals and reduces inflammation. It was great , no aftertaste , quality and ingredients are good. Easy to swallow capsule size. The downside will be it cannot be taken for a long period of time.

11/11/2025
5.0
verified purchase
Good product

I took only once a week for booster shots anti aging coz daily life already healthy way. I like the form and the capsule ingredients are safe to take.

10/29/2025
5.0
verified purchase
Nac

N-Acetyl-L-Cysteine (NAC) is a stabilized, acetylated form of the amino acid L-cysteine. It’s easily absorbed and converted within cells into cysteine, the rate-limiting substrate for glutathione (GSH) synthesis. Because GSH cannot cross cell membranes efficiently, NAC is the most effective oral way to replenish intracellular glutathione.

10/12/2025

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