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 sweetheart on June 27 2012 | Verified Purchase
I noticed too late there is polyacrylate in this product. That's plastic! I switched to another brand because i don't think eating plastic is good for anyone. Otherwise NAC is a great supplement: removes toxins from your body by helping liver to work as it should. Great hangover medicine as well :) <br /><br /> <font color="red"><strong>August 2012 - Note form Jarrow Formulas:</strong></font> The polyacrylate polymer is GRAS. The material is widely used in dietary supplements although can be represented in multiple ways on a label including the trademark Carbopol, carbomer homopolymer and carboxypolymethylene. Finally, the research indicates that due to its size, the polyacrylate polymer employed in this product is not absorbed through the intestines and therefore poses no safety concern. There is a very good reason for NAC Sustain: The half-life of NAC is relatively brief. Carbopol is a biomucoadhesasnt. It keeps the tablet at the site of maximum absorption, at or near the upper small intestines. The tablet slowly erodes, thus there is a continuous release for a couple of hours instead of the whole thing being essentially gone in one hour. The tablet can take up to two hours to release the contents plus the hour of half-lives, thus the dose lasts three hours or more. This gives a real boost to the production of GSH (glutathione) and the Phase I detoxification pathway of the liver. If one chooses to not utilize the benefits of Carbopol then the standard <a href="http://www.iherb.com/Jarrow-Formulas-N-Acetyl-L-Cysteine-500-mg-200-Capsules/235" target="_blank">Jarrow Formulas NAC capsule</a> is also an option. <br />
Posted by iHerb Customer on November 2 2010 | Verified Purchase
I used to buy NAC Sustain, as i was'nt aware that it had this dangerous toxin. I will now Never buy NAC from Jarrow formulas.
Posted by iHerb Customer on February 14 2017 | Verified Purchase
It was the worst supplement I've ever tried. I can swallow big pills fine, but this was ridiculous, don't buy it. Not coated at all either so it makes it harder to swallow, weird sour taste. Honestly not a picky person.
Posted by iHerb Customer on August 8 2017 | Verified Purchase
I still have not received this product!????
Posted by iHerb Customer on April 4 2017 | Verified Purchase
None of my products arrived.
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