Source NaturalsN-Acetyl Cysteine Antioxidant Support 600 mg Dietary Supplement That Supports Respiratory Health* - 120 Tablets

This is a great product at a great price. Seems to be high quality.

I feel like it's helping me breath better in the mornings. I use to have a hard time in the mornings. Just seemed so hard to breath for some reason. I have never been a smoker so not sure why mornings were so hard. But I have had better mornings since taking this. I take other supplements too so they may be helping as well but I'll continue to take this!

Good product ! I will be taking this regularly. Great product.

I've given one pill crushed in some yogurt to my 9-year-old son who has autism and has some fidgety behaviors that may come as a result of the autism, but more likely from his ADHD medication. The doctor recommended this product. I also looked online and it seems families have had some luck with this product. It might be a little too early, but my son still plays with/twirls his hair and plays with his lips throughout the day -- nothing destructive, but it's like he NEEDS to twirl his hair or play with his lips. We've tried thinking putty, which helps to give him something to do with his hands (it's like silly putty). He's getting to an age where he doesn't want "toys" at his desk and not really stand out from the others. I'll update if he improves. I haven't really noticed a change yet. The pill smells and he usually wants to gag while eating it. He can swallow soft gel caps, but this pill is like powder coated and large, so it's easier for my son if it's crushed. He can't swallow large gel caps comfortably yet as well.UPDATE 10/29/16: the level of twirling his hair and touching his lips has reduced. He still occasionally does these things, but not as constantly as before. I'll continue using this product and if my doc recommends a higher dosage I'll try it.UPDATE 2 11/28/16: The doctor recommended giving no more than 3,000mg. My son would never take that much medicine because these pills taste horrible to him. So I give him two crushed pills now at 1,200mg total a day. He still plays with his hair, but as I stated above, it's lessened a bit since starting this supplement. The doctor said this supplement has helped people with OCD behaviors. I think there's been some benefits so I teeter between 3 and 4 stars.UPDATE 3 05/20/17: I went back to 600mg because the pill is not tasty and he still can't swallow it well (so I'm still crushing it in yogurt). He doesn't do any of the fidgeting anymore so maybe it has helped him.UPDATE 4 06/12/18: I quit giving this supplement because it really didn't produce any consistent results for my son over time. The few times it seemed like his behaviors were improving were always short lived. This product just didn't work well for us at this time -- mostly because the pills are gross tasting and he can't swallow the tablets as-is.

BEST VITAMIN, IT REALLY DOES HELP THE QUALITY OF WHEN I'M BREATHING.ALSO, MY ALLERGY DOCTOR SAID THAT MY LUNG EXPANSION WAS SO MUCH BETTER AND STRONGER! I BELIEVE THIS SUPPLEMENT HAS HELPED THAT GREATLY

I purchased and began using this supplement after much online research and after checking out the validity score of this brand's Amazon reviews. I'm primarily taking this (one caplet, twice each day while staying well-hydrated - during daylight hours when I can respond to the effect by coughing out loosened phlegm) to help improve my COPD symptoms. (Not all COPD is the same, so I suggest that you manage your expectations when trying this.) It has very certainly helped me by loosening the viscous, hard-to-expel mucous in my chest (I developed chronic bronchitis early this year after a bad bout with that nasty flu that hit the country). It doesn't solve all my COPD problems but it has been helpful in making it a little more manageable. Make sure to do your own research on pubmed.gov (there are a lot of related studies there... and it's almost all very positive - and not just for COPD symptoms). I'd also advise you to run it by your doctor. N-Acetyl-cysteine has a low incidence of side effects and drug interactions but it's always best to err on the side of caution. Finally, thanks to the company for this quality product.

usually vegan supplements are pricey and work well, or affordable and work ok/not great. this is the quality of a pricier supplement for a very fair price. bought twice already, will buy again.

I had Adverse reactions taking half a tablet for 3 days not sure if it this that caused it , heart palpations and strange sense of time judgement issue ??