I go to the natural food store in my neighborhood. Not sure if it's the best bang for my buck, but I know it's there, and I usually discover something else cool and all natural while I am there.
swanson's (online), but the dried herbs in capsules didn't help very much - after many weeks, i stepped up to More Milk Special Blend (liquid) and that was much more effective.
Re: Fenugreek & blessed thistle: Where to buy?