(29-10-2012, 07:06 PM)tibetan113 Wrote: If pig placenta is E1, what is in BO? All three?

I honestly don't know. I don't think anyone's ever tried to figure it out. Also, it'll vary from pill to pill.

I believe that it is a little bit of all three, but dominantly E2. It also would seem to also contain a certain amount of progestins and testosterone. But it is unclear what exactly those amounts are.

It appears to be enough testosterone that while I was on it I couldn't block all my T.