has anybody used Biotest's M? and if you have was it effective. i just bought some, could not pass it up for $17. i've used formadrol and 6 0xo and a couple of different prescription, types.
The forums are full of people who've used M.
If you search on 6-oxo and/or formadrol, you will turn up some good info.
I've used it and like it.
It's really hard to quantify something like this (unless you do bloodwork), but I do notice an increase in T levels (from the various signs), and I seem to look leaner (less water).
Plus it's darn cheap.