I always recommend Living Earth Wild Yam as it is sold for birth control. It has to be high quality wild yam or it will not work and Living Earth will be out of business. It is a good company to trust.
Living Earth Wild Yam is now available at Nature's Storehouse in Canton, NY. If you are local and use wild yam it is handy to buy now. If you want to try wild yam to reduce menstrual bleeding, you can do so easily now.
As with any health and healing concern, check with a healer to see if you need other herbs and lifestyle changes to help heal your body.
With heavy bleeding there are many other changes you can make to accentuate the wild yam being effective at reducing estrogen dominance symptoms.
Give me a shout if you need help, locally or via long distance consulting. Cheers!