Hi Sue23.
Venlafaxine has been used for quite some time to help reduce flushes and sweats. It is primarily an antidepressant which has effects on noradrenalin and serotonin so it works well for anxiety and depression.
I've had generalised anxiety twice in the past and 75mg once daily worked really well for me. When I came to the end of treatment, I switched to 37.5mg tabs to be able to taper off the dose.
I found it easy to tolerate if I took it with/after food.
Interestingly enough, I used to work with gynae consultants who ran a menopause clinic and they were using venlafaxine low does to treat flushes and sweats in women who couldn't tollerate hrt.
I hope this helps
Galadriel x