@eileent
I've been using Nutricology NAC for the last two years now and since beginning it have had excellent results in reducing both the cough and the mucus. I started using it once a day and when symptoms get worse switched to twice daily. I used to use The Vest jacket twice daily but had been doing so well that my pulmonary doctor told me I didn't need to use it unless lungs got worse! Also, I could cut down my saline nebulizing from twice daily to once! I had been getting my NAC from Vitacost but recently found it less expensive on evitamins.com. I chose this brand as reviews stated it didn't have the sulfur smell. When I couldn't find this brand, I tried another and the smell was horrific to me as I have a sensitive sniffer. I was happy to find the Nutricology brand once more -seems like companies are supplying it again. Hopefully, the government stays out of it so those of us experiencing COPD or bronchiectasis problems can obtain it.