Contains Quercetin
I've done some research on the health benefits of fisetin but can't really find a lot about it.  It hasn't had many studies and the results of the ones done weren't very conclusive.  But, the reason I selected this product for review was not for the fisetin content but the quercetin.  Quercetin is absolutely wonderful at getting zinc into cells to fight off and kill viruses.  It really goes very well with vitamin C, D3 and zinc and I take all of those daily.
Rating: 5 stars