I was a t a health food store and the owner talked to me about the importance of Vit C on the immune system. She suggested this particular product. I am now concerned as I did not realize the herbs it contains as well.
I am currently on rifampin and doxy and worry about interactions.
It actually looks like a good one. I feel much better on vitamin C.
Is it the astragalus you're concerned with? My doc is fine with a little astragalus--it's also in one of the products he put me on (he doesn't totally agree with Buhner on this herb). When I was on rifampin/doxy, I took herbs and vitamins away from the meds (1 hour before or 2 hours after).