I added feverfew because the well known nutritionist, Earl Mindell, wrote
that it potentiated echinacea, making it much more effective.
Bob Spencer

[Of the 8 hits at PubMed for echinacea and feverfew together, none make any
mention of any potentiating effect of feverfew on echinacea. Of the 17 journal
hits via Scirus (some the same as with the PubMed search) none relate feverfew
increasing or potentiating the effects fo echinacea. No online source of Earl
Mindell's statements can be seen, though I suspect it may be included in his
Herb Bible. However, if there is no citation which can be examined for
credibility, one should keep this in mind. **Kitty]