My sister has complained about bad PMS for a long time. I sent her a note on FB with the warning "Unwanted advice ahead!" about Vitex and my testing with the doctor. She said it sounds like something that would be helpful and asked how much it is. I don't know how effective it would be for her since she eats a lot of soy, but I'm glad she might give it a try.
I just found that Vitacost carries Vitex, and their brand is very cheap. I don't need to stock up on anything else and it would not arrive before I run out of my current bottle. Even with shipping, it would be cheaper than the stuff I got at VitaminShoppe, but it might be a good idea for me to stick with one brand while I'm still giving this the 3 month trial. I'll check my supplements tonight, maybe I need more of something else and I just haven't noticed yet. Free shipping on $25 or more of Vitacost brand supplements! If I just buy Vitex from Vitacost, it would cost the same as the other brand in the store if I used the 2-day shipping to get it here in time, haha.