I love this product and initially felt really good taking it the first week. I've been taking this for 2 weeks. Began using this to detox from removal of amalgam (mercury/silver) dental fillings. Without knowing the cause, I started to feel anxious, constricted...like I had too many things going on at once. I then had a dental appt. and they took my blood pressure before placing a crown. They said my blood pressure is high, which they thought would be nervousness sitting in a dental chair. Never had high blood pressure before...am 40 yrs and healthy. I later found on the Internet that research from the University of Virginia Health System has found that NAC can cause the body to believe that it is experiencing hypoxia by forming a molecule that causes the signals the blood vessels they are low on oxygen. The body responds by increasing pulmonary blood pressure, which then causes the heart to swell. Due to the possible effects on blood pressure, patients managing their blood pressure should consult with their physician before taking N-Acetyl-L-Cysteine. I have now switched to L-Glutathione to detox from mercury and other toxins.
Posted by iHerb Customer on Dec 13, 2013 | Verified Purchase
excellent product, I take one morning and night. has really helped to clear out, My Fatty Liver
Posted by iHerb Customer on Dec 18, 2009 | Verified Purchase
We read one of the reviews that said to take 3-4 tablets every three hours if not feeling well and didn't believe it. In Singapore, when one of us starts getting congested and achy, we all do, but this time, my husband was sick and I thought we might as well try to follow these instructions. Mind you, we have tried the gambit of products - and alternatives - and always ended up with the whole family on antibiotics because the sickness turned into a bacterial infection, strep or tonsillitis mostly. So, when my husband started taking this product, 3-4 tablets every 3 hours, he recovered within 5 days and never took time off work from exhaustion AND the rest of the family stayed well. This is truly remarkable considering our history! I found another N-A-C product in Singapore and the bottle was Singapore $55.00, or around $40 USD. So, the price is also affordable.
Posted by iHerb Customer on Oct 28, 2008 | Verified Purchase
This product really works great! I have an immune system deficiency and I get lots of colds and flus, and this NAC has cut down on my sick time.
Posted by danarm on Sep 15, 2013 | Verified Purchase
Strange supplement... it is both energizing and tiring to me.
Posted by iHerb Customer on Nov 12, 2009 | Verified Purchase
Grabbed a bottle for blepharitis... popped a couple first evening, and: alcohol cravings (i like a drink or three at night): gone flu-like symptoms (no shot this year, so far): nearly gone within an hour i love this supplement
Posted by iHerb Customer on Mar 30, 2009 | Verified Purchase
This does seem to have a detoxing effect. I get lttle back pains around my kdneys and this seems to have disappered since I started taking this.
Posted by iHerb Customer on Apr 27, 2008 | Verified Purchase
I recommend Jarrow Formulas, N-A-C Sustain to anyone with GI troubles. It has become a significant part of my treatment for food sensativity issues due to Salicylate allergies. This product is the only NAC sustain I have found. The sustain is necessary because NAC breaks down in the system very quickly becoming useless and can plug up the works.
Posted by Jasmine44 on Jun 05, 2010 | Verified Purchase
I haven't had any health issues since taking Jarrow N-A-C Sustain. No annual allergy/sinus problems, no Spring colds, & no upset stomach or headaches! I like the time release feature, as NAC breaks down quickly..this lasts throughout the day.
Posted by iHerb Customer on Jul 20, 2010 | Verified Purchase
I like this product. I can tell a difference and my husband has Parkinson's and so I think they help him also. He takes it twice a day as this proguct is a percursor to Glutathione which is much needed with this disease.Of course this is not a cure but it helps with slowing down the progression of it.Over all I Like the product better than others.
Posted by iHerb Customer on Sep 26, 2011 | Verified Purchase
The Nurse Practitioner at my pulmonolgist's office recommended this for bronchiectasis, and it has helped a great deal.