Cold-fX is unsafe for women with cancer or a family history of cancer.

  Emails are circulating that claim Cold-fX "feeds" hormonal cancers such as breast or uterine cancers.

  This herbal cold and flu remedy contains an extract of North American ginseng (Panax quinquefolium). The rumor probably started because of studies showing that ginseng has estrogenic effects.

  It's true that some preliminary research shows that American ginseng can have estrogenic effects...and might stimulate breast cancer cell growth in a test tube.