Page 1 - Reviews - Protocol for Life Balance, NAC (N-Acetyl-Cysteine), 600 mg, 100 Veg Capsules - iHerb

Customer Ratings & Reviews

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4.9
Based on 2,146 ratings
1,917
174
38
12
5
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What customers say
Customers generally appreciate the quality and effectiveness of this NAC supplement, noting benefits such as improved immune system, respiratory health, and liver detoxification. Many users reported positive health effects, including reduced inflammation and relief from colds and coughs. The product is praised for its easy-to-swallow capsules and good packaging. However, some customers experienced issues with black spots or discoloration in the capsules over time. Despite these concerns, many users are satisfied with the product's performance and plan to repurchase.
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Customer reviews (2,104)
Product reviews solely reflect the views and opinions expressed by the contributors and not those of iHerb. iHerb does not verify or endorse any claims made in these reviews. Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
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PlanetEarth
Posted on Oct 29, 2024
Croatia
133
106
48
2,301
Quality NAC at a Great Value
Verified purchase
Been taking these NAC capsules for about 3 weeks now and I'm impressed with the quality-to-price ratio. Each capsule delivers 600mg of NAC plus selenium, which is a nice bonus for antioxidant support. The bottle contains 100 capsules, so it lasts almost 2 months at the recommended dose. The capsules are veggie-based and a reasonable size - no trouble swallowing them. Really appreciate that they're made without common allergens and in a GMP facility. The freshness packets in the bottle actually make a difference - no weird smell that you sometimes get with NAC supplements. I take one in the morning and one in the evening as recommended. Pro tip: keep the bottle tightly closed between uses since NAC can be sensitive to air. The natural variation in color is normal, so don't be concerned if you notice some speckling. If my experience helps you make an informed choice, feel free to rate this review! 😊
iHerbCustomer
Silver
Posted on Dec 26, 2023
Canada
180
0
26
32
Great antioxidant
Verified purchase
Thus is a great quality product from Protocol for Life brand. I normally order a different brand but due to it being out of stock I got yo try this one. I'm glad I did. this has quality ingredients nac , plus added selenium and molybdenum both are great for the body support immune health. 100 vegetarian capsules in 600 mg per capsule. no after taste or other side effects; help support oxidation
Ibtesam
Posted on Mar 27, 2024
Jordan
26
2
0
0
Very good
Verified purchase
benefited from the third day. I was suffering from coughing due to phlegm in the chest. I also felt energetic, perhaps because it helps clean the liver.
ca1fb413-e201-4376-ae87-ed892a9d440b
iHerb customer
Posted on Nov 29, 2025
Saudi Arabia
39
13
0
7
bought for a brighter complexion
Verified purchase
quality good! ingredient very good as well size big actually and could last for months age doesn't matter if think package plastic benefit good for the bones and bright complexion diet matters when yiu eat this take there is no taste whatever maybe smell is kinda okay not bad oxidation idk
iHerb customer
Posted on Oct 16, 2025
Kazakhstan
72
0
0
4
Verified purchase
This supplement has become a staple in my daily routine, and I’ve noticed a positive difference in my overall well-being since I started taking it. The ingredients are high-quality, and I appreciate that it’s free from unnecessary additives. While results may vary, I would definitely recommend giving it a try if you’re looking for a natural boost!
iHerb customer
Posted on Jul 9, 2025
United States
303
1
0
11
Verified purchase
I’ve been taking this NAC for a while now and really like it. The capsules are easy to swallow, no weird smell or taste. I feel like it helps me think more clearly and recover faster when I’m tired or stressed. It also feels good knowing it supports the liver and overall health. Shipping was quick, and the packaging was solid — everything arrived in perfect shape. Will definitely keep buying this one.
GigiTan
Posted on Nov 13, 2021
Australia
1,030
2
2
2,212
Verified purchase
My better half and I both had the Delta varient COVID 19, and wound up with awful lungs we were unable to get cleared up, so we requested this item. Following 3 days of taking it, we both were better and had no more hack! This stuff is totally stunning, and I've been sharing this information to everybody I know!
Sophia
Gold
Posted on Feb 19, 2021
United Arab Emirates
570
8
32
3,294
Verified purchase
This review has no medical advice content: it represents my own views and experience with this product. I bought this product to boost the natural production of glutathione which is said to have many benefits for our body: liver and cellular detox, increased energy.. etc... I look forward to experience the long term benefits from constant usage. The capsules are easy to swallow. The suggested dosage is 2 per day so one bottle should last me for 1.5 months: good value for money. I like "Protocol for Life Balance" brand and I also bought the ECG green tea extract from the same brand.
JuliaSal
Gold
Posted on Apr 2, 2026
United States
595
0
2
46
Great
Verified purchase
Great product. Good quality ingredients. Clean product. Will buy again
altamentis
Gold
Posted on Jan 11, 2024
Portugal
354
0
1
274
Good for the liver and immunity
Verified purchase
I take regularly NAC in order to improve my liver health. I also use it to fight colds, since NAC can help producing glutathione, the master antioxidant.