There is no evidence that<unk>  is effective in those infected with the common<unk> . The effect of preventative use is not clear. When used preventively it makes no difference on the rate of infections. It also appears to have no effect on how bad the infections are. There is tentative evidence that it may lessen the length of sickness when used preventively. Blumenthal from American Botanical Council suggested that<unk>  “represents a new class of herb-based therapeutic products” and is a “result of intensive scientific research on a natural herb”. Clinical studies involving more than 1600 patients, showed that the active ingredient in<unk>  can help reduce and prevent common<unk>  and flu symptoms when taken daily.,
Cold-fX
MChip
E-med
Ze339
SCoRS
BHIE
E-SCREEN
RTS,S