It may work best when used before travel or large gatherings, especially if accompanied by wearing an N95 face mask.

Q. Astepro has been a great help for my seasonal allergies. I’ll now use it as a preventative against flu or COVID-19. The downside for many people is the price and the taste. Here’s a solution.

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. (WHTM) — The U.S. Food & Drug Administration ...