I ordered this NAC because of the higher dosage capsules than I had before. NOW's 600mg were definitely better. So after researching, I took up to 5 capsules a day to get rid of all the chesty cough with mucus...(where the heck did all that come from???) I have been Healthy as a Klingon Targ for DECADES!!
NOW's NAC is fantastic...so I am continuing to take 1-2 daily to stay 28 and Holding!