Though this site appears to have a lot of information about menopause, I couldn't find anything specifically dealing with natural remedies. Clicking on either "Vitamins" or "Herbs" takes you to encyclopedic listings of vitamins or herbs -- nothing specifically about menopause.

This article makes an excellent point: One note of caution: although irregular menstrual periods are common as you get closer to menopause, they can also be a symptom of uterine abnormalities or uterine cancer.