For me, NoGlo is a no go.
I was one of the first people to order NoGlo. I bought it when it first came out, November of 2012. I did what the directions said to do, take it for 2-3 weeks and let the enzymes build in my system. After those 2 weeks, I tried drinking and I turned just as red as before. So I waited another week. Drank again and I got just as bright red as before. I tried taking an additional 2 pills before drinking. It had no effect. I kept experimenting with NoGlo, but every time, it didn't help the flushing and didn't help my increased heart rate or shortness of breath. In fact, some times I got a worse hangover from taking it.
I was really hoping NoGlo could help me out. I read up on all the antioxidants that are in the supplement and it sounded like it might work. Unfortunately, it turned out it's nothing more than that, a vitamin supplement.
P.S. One thing that also bothered me was that if you take NoGlo for the recommended 2-3 weeks beforehand (that would be 28-42 capsules) it would leave you with only 18-32 capsules left. So that's 9-16 doses (a dose is 2 capsules) after the recommended maximum benefits for 30 dollars. Between $2-3 a dose. Seems expensive for vitamins.