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Source Naturals

N-Acetyl Cysteine, 1,000 mg, 180 Tablets

4.7 · 1464 reviews
3,917 ₽

Dietary Supplement Antioxidant Support 1,000 mg Non-GMO Validated N-acetyl cysteine is a more stable form of the sulfur amino acid L-cysteine, and is a powerful cysteine and glutathione precursor. Glutathione is a major antioxidant as the cofactor for glutathione peroxidase, one the most important antioxidant enzymes in the body, particularly in the liver. Additionally, a meta-analysis of human clinical trials has reported that N-acetyl cysteine supplementation supports respiratory health.

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Dietary Supplement Antioxidant Support 1,000 mg Non-GMO Validated N-acetyl cysteine is a more stable form of the sulfur amino acid L-cysteine, and is a powerful cysteine and glutathione precursor. Glutathione is a major antioxidant as the cofactor for glutathione peroxidase, one the most important antioxidant enzymes in the body, particularly in the liver. Additionally, a meta-analysis of human clinical trials has reported that N-acetyl cysteine supplementation supports respiratory health.

Customer reviews

5.0
verified purchase
Quality

NAC should have a strong sulfur smell. This NAC does. Tablet is large but easily swallowed because of its smooth coating. Higher dose of 1000mg helps with the detox. I take it with selenium, and Herb Pharm Cilantro, and Herb Pharm Liver detox to remove heavy metals and other junk. Recent test results show this combination works as my levels of mercury have reduced drastically and feeling much better overall. Took years to find this combination, thank God I did!

11/13/2024
5.0
verified purchase

I believe there are many health benefits of using NAC. I have been taking it for some time already. N-acetyl cysteine is a powerful cysteine and glutathione precursor. Glutathione is a major antioxidant. I take it 2 to 3 times in week as preventive measure, and when I feel like I'm going to catch a cold I take it more often.

2/9/2021
5.0
verified purchase
It's not that smelly

After all the terrible things I read that NAC smells super bad, I was expecting the worst. It's not THAT smelly. It just smells like boiled eggs, and I wouldn't say strongly. You're supposed to swallow it, not smell it :D

5/23/2026
5.0
verified purchase

I’ve been taking N-Acetylcysteine (NAC) consistently and I’m genuinely impressed with how well it works. I feel a clear improvement in my energy levels and overall wellbeing. It also helps with reducing brain fog and supporting my breathing something I noticed within the first week. The capsules are easy to take, gentle on the stomach, and I haven’t experienced any side effects.

12/10/2025
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
Прекрасно!

Super product, I will definitely order it again, I recommend it to everyone, the packaging is of high quality, and the ingredients are excellent. Fast delivery, everything arrived in good condition and was well packaged !!!

10/28/2025
5.0
verified purchase
Good value for money

It's very nice that there are lots of tablets in the bottle and the concentration is also quite high. Something that is quite hard to find in my country. It does stink a bit, but if you put it in your mouth and taste it, it just tastes like a strong vitamin C

10/14/2025
5.0
verified purchase

Quality is super! The ingredients are great! Size arranged! What you need! Performance is felt! the product arranged, perfectly packed, the effect is definitely there! I will order more! Just as quickly delivered

10/13/2025
4.0
verified purchase
NAC 1,000 mg

Source Naturals NAC 1000 mg provides a potent dose of N-Acetyl Cysteine, a stable form of the amino acid cysteine, known for its antioxidant properties and role in supporting respiratory health. Each tablet delivers 1000 mg of NAC, and the recommended dosage is 1 tablet 1 to 2 times daily. The formulation is hypoallergenic, free from yeast, dairy, egg, gluten, corn, soy, and wheat, and contains no sugar, starch, salt, preservatives, or artificial color, flavor, or fragrance. Users have reported benefits such as improved mental clarity and reduced headaches.  However, some individuals may experience side effects like nausea or gastrointestinal discomfort. As with any supplement, it’s advisable to consult with a healthcare professional before starting a new regimen. Quality is okay and so is ingredients

9/29/2025
5.0
verified purchase
Прекрасно!

Super product, I will definitely order it again, I recommend it to everyone, the packaging is of high quality, and the ingredients are excellent. Fast delivery, everything arrived in good condition and was well packaged !!!

9/20/2025