Wal-Mart sells it too.
Yup.
Haven't had my chronic bronchitis or even a cold since I started taking it. Also, a big ugly black thing growing on my shoulder.....went away. It had been there for decades.
I think Quercetin w/Zinc fixes lots of ailments, same with the other "remedies".
It's probably something the medicRATS don't want you to know about.