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Vitamins
Top-Rated Products
NSI N-Acetyl Cysteine -- 600 mg - 240 Capsules (6)
Country Life Biochem NAC N-Acetyl Cysteine -- 750 mg - 60 Vegetarian Capsules (4)
Jarrow Formulas N-A-C Sustain -- 600mg - 100 Tablets (11)
Source Naturals N-Acetyl Cysteine -- 1000 mg - 120 Tablets (6)
Twinlab NAC (N-Acetyl Cysteine) -- 600 mg - 60 Capsules (5)
Reviews Home >  Supplements >  N-Acetyl Cysteine (NAC)
Top Rated Product
NSI N-Acetyl Cysteine -- 600 mg - 120 Capsules

NSI N-Acetyl Cysteine -- 600 mg - 120 Capsules

Promotes liver and bronchial health! How Does NSI® N-Acetyl Cysteine Work? L-cysteine is a potent antioxidant that has been used for various viral conditions. The N-acetyl form is better absorbed. N-acetyl cysteine may help protect the liver from certain toxins, and it helps break up pulmonary and bronchial mucus. N-acetyl cysteine also boosts the levels of glutathione, a powerful antioxidant and detoxifier. NSI®N-Acetyl Cysteine is better because it:. Costs less than many major brands. Did You Know? All NSI supplements are packaged in HDPE (High Density Polyethylene) bottles. These bottles keep moisture vapor out, protecting the freshness and integrity of their contents, and are 400% more effective compared other brands currently using PET (Polyethylene Terephthalate) bottles. HDPE bottles do not break as glass can and are also recyclable so we urge you to please recycle them.  

Average Customer Rating: 4.31 out of 5 4.3 out of 5
22 of 26 (85%) customers would recommend this product to a friend.
Product Details

Customer Reviews for NSI N-Acetyl Cysteine -- 600 mg - 120 Capsules

Overall Rating: 4 out of 5 4 out of 5
Not Sure Yet, October 12, 2009
By tigertiger

"I have been using it with Aceytl L-Carnitine, they work together. But I am not sure by itself..."

Age: 35-44
Gender: Male
Daily supplement usage: 1-2 supplements daily
Referral source: Other
Reason for usage: Specific health concern
Duration of use: Less than 30 days
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Review 2 for NSI N-Acetyl Cysteine -- 600 mg - 120 Capsules

Overall Rating: 1 out of 5 1 out of 5
Terrible Smell !!, September 28, 2009
By steph1488

"I agree with one of the other posters. I opened the bottle and it smelled like rotten eggs. I'm not comfortable taking it either. :("

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Review 3 for NSI N-Acetyl Cysteine -- 600 mg - 120 Capsules

Overall Rating: 5 out of 5 5 out of 5
July 17, 2009
By Bija
Value: 5 out of 5 5 out of 5
Quality: 5 out of 5 5 out of 5
Effectiveness: 5 out of 5 5 out of 5
Satisfaction: 5 out of 5 5 out of 5

"Great prodcut at a great price. This product is high quality."

Age: 45-54
Gender: Female
Daily supplement usage: 6+ supplements daily
Referral source: Self-referred
Reason for usage: Specific health concern
Duration of use: Over 180 days
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Review 4 for NSI N-Acetyl Cysteine -- 600 mg - 120 Capsules

Overall Rating: 1 out of 5 1 out of 5
New formula smells bad, June 23, 2009
By HealthySupplements from Missouri
Quality: 1 out of 5 1 out of 5
Satisfaction: 1 out of 5 1 out of 5

"I hate to give a bad review for this, however, they changed the formula and the new one quite literally stinks. It smells like a dead animal. I spoke to the company about it and they said the smell was "normal", however I'm not ingesting anything that smells like that.

They were very nice about letting me return it for a refund, but they seriously need to reconsider the new formula."

Age: 45-54
Gender: Female
Daily supplement usage: 6+ supplements daily
Referral source: Self-referred
Reason for usage: Promote overall health
Duration of use: Less than 30 days
1 of 2 people found this review helpful.
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Review 5 for NSI N-Acetyl Cysteine -- 600 mg - 120 Capsules

Overall Rating: 5 out of 5 5 out of 5
April 20, 2009
By jherbear
Value: 5 out of 5 5 out of 5
Quality: 5 out of 5 5 out of 5
Effectiveness: 5 out of 5 5 out of 5
Satisfaction: 5 out of 5 5 out of 5

"Great product to add on to liver care regimen!"

Age: 25-34
Gender: Female
Daily supplement usage: 6+ supplements daily
Referral source: Self-referred
Reason for usage: Promote overall health
Duration of use: Less than 30 days
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Review 6 for NSI N-Acetyl Cysteine -- 600 mg - 120 Capsules

Overall Rating: 5 out of 5 5 out of 5
Super Bath Gel, April 3, 2009
By angelbath33137 from South MS
Value: 5 out of 5 5 out of 5
Quality: 5 out of 5 5 out of 5
Effectiveness: 5 out of 5 5 out of 5

"I love it because it can be used as a bubble bath, bath or shower gel. It is a soothing, calming, experience to use it at bathtime each day."

Age: 65-74
Gender: Female
Daily supplement usage: 1-2 supplements daily
Referral source: Self-referred
Reason for usage: Promote overall health
Duration of use: 61-180 days
0 of 3 people found this review helpful.
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Review 7 for NSI N-Acetyl Cysteine -- 600 mg - 120 Capsules

Overall Rating: 3 out of 5 3 out of 5
Not getting good sleep, September 15, 2008
By marcella from Nebraska
Value: 4 out of 5 4 out of 5
Quality: 2 out of 5 2 out of 5
Effectiveness: 2 out of 5 2 out of 5
Satisfaction: 2 out of 5 2 out of 5

"I've been taking this for couple of days now and I feel energetic everyday but I'm not getting a good sleep and the rest side effect remains to be seen"

Age: 25-34
Gender: Female
Daily supplement usage: 1-2 supplements daily
Referral source: Self-referred
Reason for usage: Promote overall health
Duration of use: Less than 30 days
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Review 8 for NSI N-Acetyl Cysteine -- 600 mg - 120 Capsules

Overall Rating: 1 out of 5 1 out of 5
May contain an ingredient causing acid reflux, April 30, 2008
By Sport815 from New York
Value: 4 out of 5 4 out of 5
Quality: 1 out of 5 1 out of 5
Effectiveness: 1 out of 5 1 out of 5
Satisfaction: 1 out of 5 1 out of 5

"Whenever I took this product, experienced acid reflux. Not so with other manufacturers. Was told I could return, even opened bottle, but packaging and finding a carrier was too much touble. Decided to just discard."

Age: 45-54
Gender: Male
Daily supplement usage: 1-2 supplements daily
Referral source: Physician
Reason for usage: Specific health concern
Duration of use: Over 180 days
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Review 9 for NSI N-Acetyl Cysteine -- 600 mg - 120 Capsules

Top 250 Contributor Top 250 Contributor
Overall Rating: 4 out of 5 4 out of 5
Foundational Supplement, March 11, 2008
By questforlongevity from New Jersey
Value: 5 out of 5 5 out of 5
Quality: 4 out of 5 4 out of 5
Effectiveness: 4 out of 5 4 out of 5
Satisfaction: 4 out of 5 4 out of 5

"Great price and theraputic dosage (600mg) for this foundational nutritional supplement."

Age: 45-54
Gender: Male
Daily supplement usage: 6+ supplements daily
Referral source: Self-referred
Reason for usage: Promote overall health
Duration of use: Over 180 days
1 of 1 people found this review helpful.
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Review 10 for NSI N-Acetyl Cysteine -- 600 mg - 120 Capsules

Overall Rating: 5 out of 5 5 out of 5
February 24, 2008
By Runlesrun
Value: 5 out of 5 5 out of 5
Quality: 5 out of 5 5 out of 5
Effectiveness: 5 out of 5 5 out of 5
Satisfaction: 5 out of 5 5 out of 5

"I have been trying to lose weight and have always looked forward to my glass of wine in the evening, which is full of empty calories. After taking this I no longer look forward to my wine and have started losing weight."

0 of 1 people found this review helpful.
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Review 11 for NSI N-Acetyl Cysteine -- 600 mg - 120 Capsules

Overall Rating: 5 out of 5 5 out of 5
Really great., August 2, 2007
By gwapocat

"This product really works."

0 of 1 people found this review helpful.
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Review 12 for NSI N-Acetyl Cysteine -- 600 mg - 120 Capsules

Overall Rating: 5 out of 5 5 out of 5
My favorite supplement, June 16, 2007
By Maddox
Value: 5 out of 5 5 out of 5
Quality: 5 out of 5 5 out of 5
Effectiveness: 5 out of 5 5 out of 5
Satisfaction: 5 out of 5 5 out of 5

"If I could only take one supplement it would be NSI's NAC. It's such a basic need for the body - it doesn't just handle a symptom, it does wonders for reversing the aging process!"

3 of 3 people found this review helpful.
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Review 13 for NSI N-Acetyl Cysteine -- 600 mg - 120 Capsules

Overall Rating: 5 out of 5 5 out of 5
Excellent for body self-repair, June 11, 2007
By jenno
Value: 5 out of 5 5 out of 5
Quality: 5 out of 5 5 out of 5
Effectiveness: 5 out of 5 5 out of 5
Satisfaction: 5 out of 5 5 out of 5

"N-acetyl cysteine is a vital ingredient for your body's self-repairing processes. Taken 6 weeks before and after a surgery will decrease recovery and healing by nearly half the time. I speak from personal experience! This product was recommended by my surgeon."

8 of 8 people found this review helpful.
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Ratings-Only Reviews for NSI N-Acetyl Cysteine -- 600 mg - 120 Capsules Based on the average of (13) ratings-only reviews
Overall Rating 4.85 out of 5 4.8 out of 5
Would recommend?: Yes  12 out of 13
Value 4.9 out of 5 4.9 out of 5
Quality 4.8 out of 5 4.8 out of 5
Effectiveness 4.6 out of 5 4.6 out of 5
Satisfaction 4.7 out of 5 4.7 out of 5