We are on the Z-Stack proph. We get it by subscription so it ships auto every 30 days. This last time it took a couple of extra days to get it and we ran out. I ordered some quercetin to have on hand in case this happens again. I bought the Life Extension brand at swansonvitamins.com 17.33 a bottle for 60 caps but they have numerous different brands, some more expensive some less.
We are on the Z-Stack proph. We get it by subscription so it ships auto every 30 days. This last time it took a couple of extra days to get it and we ran out. I ordered some quercetin to have on hand in case this happens again. I bought the Life Extension brand at swansonvitamins.com 17.33 a bottle for 60 caps but they have numerous different brands, some more expensive some less.