Page 1 - Reviews - NutraBio, NAC, N-Acetyl Cysteine, 5.3 oz (150 g) - iHerb
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Customer Ratings & Reviews

100% authenticOur products are sourced directly from brands or authorised distributors.Show more
4.8
Based on 579 ratings
493
58
23
4
1
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What customers say
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English (UK)
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iHerb Customer
Silver
Posted on Oct 10, 2025
United States
228
0
2
25
gunk
Verified Purchase
It helps blow gunk outta the system so use it it's good.
Auto-translated from English
iHerbTWMonkey
Posted on Jul 13, 2026
Taiwan
27
0
1
1
High doses of NAC
Verified Purchase
We previously bought another product in the same category. The main difference between this one and the other is the dosage. This one contains twice the amount in one spoonful, which you can see from the spoon that came with it. At first, we didn't realize this and thought it was more acidic, but it's just a difference between one and two tablespoons. We add it to acidic drinks, such as sports drinks or lactic acid drinks; it's really too sour to eat directly. Remember not to put it in very hot drinks. My family even asked if we could use it to make hot and sour soup, but I said that would be too wasteful; just add it to warm or cold drinks.
Auto-translated from Chinese Traditional
tdsm
Silver
Posted on Feb 28, 2026
Japan
239
0
1
175
Good value for money!
Verified Purchase
I've been taking NAC for a long time, so I bought this powder type, which is more cost-effective than capsules. It has a sour taste, but you can drink it as is. The quality is also good, so it's quite good.
Auto-translated from Japanese
iHerb
Silver
Posted on Feb 20, 2026
Poland
207
0
2
125
I liked it, the quality is excellent
Verified Purchase
Take NutraBio NAC (150 g) to support your liver and boost glutathione levels. It helps with stress, colds, and overall antioxidant balance. It's pure and additive-free, making it easy to adjust your dosage. It's a working product.
Auto-translated from Russian
KurbatovaElena
Gold
Posted on Sep 26, 2025
United States
336
0
0
65
Verified Purchase
NAC is a powerful antioxidant that can support respiratory health and help the liver and kidneys detoxify. It supports detoxification, stimulates glutathione production, and strengthens the immune system. It's also a good anti-inflammatory. The powder form is a great value. It lasts a long time and comes in convenient packaging.
Auto-translated from Russian
iHerb Customer
Posted on May 20, 2026
Ukraine
11
0
0
1
great shape
Verified Purchase
I decided to add NAC to my diet as a powerful antioxidant to support my overall health and restore my body after intense physical activity. I bought it from NutraBio because of the brand's reputation and the purity of its ingredients. The powder form is convenient because you can adjust the dosage yourself, but it's worth considering that the taste of pure NAC is quite specific - a little sour and sulfuric, so it's better to mix it with some kind of drink.
Auto-translated from Ukrainian
iHerbCustomer
Gold
Posted on Oct 1, 2025
Ukraine
361
0
0
57
Clean composition and convenient powder
Verified Purchase
I chose NAC in powder form so I could adjust the dosage myself. The packaging is convenient, the jar has a tamper-evident seal. It dissolves easily, has a neutral taste, and can be added to water or juice. The ingredients are free of unnecessary additives, just NAC, which I appreciate. I take it in courses and feel lighter and more energetic, especially during exercise.
Auto-translated from Russian
Viktoriia
Silver
Posted on Sep 28, 2025
Ukraine
110
1
0
4
Excellent!
Verified Purchase
This amino acid is essential! NAC increases glutathione levels, which protects liver, heart, and brain cells from toxins and oxidation. It supports recovery from inflammation, stress, and physical exertion. It is used in cases of paracetamol poisoning because it restores glutathione stores. It supports the elimination of toxins and reduces the burden on the liver from alcohol, medications, or environmental pollution.
Auto-translated from Russian
SAMi
Posted on Jun 9, 2026
Saudi Arabia
52
0
1
2
Verified Purchase
Excellent and still under testing. Glory be to God and praise be to Him, Glory be to God, the Almighty.
Auto-translated from Arabic
Moazzaz
Silver
Posted on May 8, 2026
Saudi Arabia
288
0
0
27
Distinguished
Verified Purchase
It's excellent for those with lung infections, phlegm, and fibrosis; it greatly relieves lung inflammation.
Auto-translated from Arabic