I order a lot of supplements from iHerb--their prices are very good and the service is terrific. Benfotiamine is hard to find locally, but iHerb has several brands. I take it 4x a day because I felt I was keeping the level up in my body that way--I did read MrsD's post where she said you could take it all at once or separately though, and she knows a lot more than I do about these things! I think R-lipoic acid might be harder to find locally too, but since I order about every month from iHerb, I just get it from them.

Incidentally, Saturday morning I listened to an eye doctor on the radio talkiing about various supplements for the eye, and he recommended benfotiamine for that too.

Joan