I tried agnus castus too which didn't work.
Stuff which did work to manage the symptoms.
change over to natural fibre clothing so far as possible
limit caffeine
increase liquid intake
cool showers as opposed to hot baths (and I used to love a hot wallow)
manage stress where you can
I tried giving up alcohol which made no difference (and still doesn't I am now virtually TT for other, non health related reasons)
dress in layers so you can shed them and put them back on as needed.
The other thing i tried was soya milk but it tastes like pond water :-P