My friend was recommended Bach Flower Remedies for her hot flashes - at least 30 in the daytime, hardly 2-3 hrs of sleep due to hourly hot flashes - of very severe intensity. She was given Walnut, Rescue Remedy and White Chestnut initially. Within 3 days there was a difference in the number but not so much in the intensity. After 2 weeks, when she ran out of the remedy mixture, a review was taken and Oak given as it was indicated by her reaction to the hot flashes - that is, one should buck up and carry on and not be deterred by it all. She is a reliable person and gets more than her fair share at work and within the extended family. Scleranthus was also added as she went from cold to hot within seconds and had mood swings also.
It worked miracles. She is free of hot flashes for the first time in 4 years. It's been a month now and she has been advised to continue for at last 2 months before seeing if she can discontinue them. I've since looked it up in the Net and books and find Walnut on its own is usually good enough. But my friend also needed her character remedies.
Please don't go in for HRT or other therapy for want of an alternative. These remedies are supposed to be very gentle. I thought I would pass on this info on behalf of my friend.