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 Jan 19, 2008 | Verified Purchase
My system was stressed from chronic Epstein Bar and Yeast, but I still caught infections which anti-biotics would not always touch and make the yeast grow. NAC made my liver happy and keeps chronic sinus infections at bay. Jarrow's time release formula seems to work much better than others.
Posted by iHerb Customer on Feb 19, 2007 | Verified Purchase
Another little know benefit of Cysteine in its various forms such as N-Acetyl Cysteine is its ability to help detoxify the liver in the case of alcohol poisoning, more commonly known as a hangover. People tend to take a NSAID (nonsterodial, anti-inflammatory drugs) like aspirin or ibuprofen after heavy drinking and before bed, it is better to take L-Cysteine, or N-A-C, so as not to add insult to injury of the liver and digestive tract.
Posted by noneofyourfrigginbusiness on Apr 06, 2009 | Verified Purchase
Clinical research has proven that L-cysteine is safer to take on a daily basis than sustained-release NAC; this powerful antioxidant should be cycled and should not be taken continuously. Please note that NAC is an altered version of L-cysteine and thus has the potential for more side effects. Please use NAC with caution and tell your physician you take this product.
Posted by iHerb Customer on Aug 29, 2010 | Verified Purchase
I've had "liver problems" my whole life -- every time a doc wants to start me on a new drug, we test my liver. I've been taking NAC Sustain for a few months, and my most recent liver panel came back clean. My doc actually said "wow." Go figure. Also, not sure about the mechanics of this, but suffer from Sinus pain and have to stay on top of it -- until I started NAC Sustain -- I can always tell when we run out -- sinus pain returns. As long as I stay on this formula, no Sinus problems. Amazing. I usually take 2-3 at night before bed, and then another 1-2 tabs in the morning before food. This stuff is amazing.
Posted by iHerb Customer on Nov 10, 2008 | Verified Purchase
Since oral supplementation of glutathione doesn't work, and NAC has such a short half-life, I really appreciate being able to take a time-released product (that works) rather than popping pills all day long. Helps my immune system. Wouldn't be without it.
Posted by iHerb Customer on Mar 19, 2011 | Verified Purchase
The time-release function of this supplement really hits on target for creating a superior formula. MAke sure you take this if you care at all about oxidation in your body. Many antioxidants are very useful, and target different free-radicals, in different parts of the body. However nothing, even arguably ALA, can come close to the effects of NAC! Nac's action on the human system is global, and it has hundreds of receptors for free-radicals once converted to GLutathione. Other anti-oxidants don't approach this! Take with Alpha-lipoic acid to help recycle protection further. I would also says Ascorbyl Palmitate is a good idea! My usually pale skin was visibly pink again within days to to the positive action of NAC. It does wonders for the skin and hair.
Posted by iHerb Customer on Feb 07, 2008 | Verified Purchase
I think this is the best form of NAC on the market. NAC is the precursor to reduced glutathione. This helps the body detox many different substances. I'm chemically sensitive and have elevated copper levels, and this has helped with both conditions.
Posted by iHerb Customer on Oct 11, 2011 | Verified Purchase
I am an ex-smoker and lung cancer survivor - added to that I used to drink a lot years and years ago - That being said, my lungs have taken a beating and I have been diagnosed with emphysema. My liver function test reflect normal function, however, I have no doubt some damage resides there as well. Throw on top of that bad sinuses - summer time is awful for me between sinusitis, pollen and 1/3 of a lung missing - My breathing function gets very very difficult around summer time when it gets hot - high humidity is also a problem - Since I have been taking this product I have noticed a huge difference - my breathing is so much better - if that promise is true, I'll bet my liver is getting good benefit from this stuff - I highly recommend it! And as always, a shout out to iHerb for excellent prices, service and delivery - I recommend them to everyone as well - I'm a very happy customer.
Posted by CriticalReviewer on Nov 29, 2009 | Verified Purchase
My doctor prescribed a theraputic dose of NAC to aid with a lung condition. It always gave me a headache, until I began using NAC by Jarrow. With their sustained release product, I no longer get the headaches.
Posted by iHerb Customer on Aug 27, 2009 | Verified Purchase
As a precursor to glutathione, a major detoxifier in the lungs and liver, NAC helps in everyday living. But NAC itself helps to breakdown alcohol directly and makes hangovers all but disappear. I recommend taking two before drinking with a full glass of water and two before going to bed. The next morning will be too late!!! Have fun thirtysomethings!