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.