There are also 2 types of gyno: estrogen and progesterone. Do a search, and there is some info on both. If memory serves me right, estro is boobs, and progesterone is big puffy nipples. The puffy nipples are hardest to fix. X-Mass is a progestin, so it might possibly cause puffy nips with improper pct. Please do not touch this stuff untill you have done a lot of research. Make sure you have post cycle therapy fully planned out before starting X-mass. Not every one uses liver protection with non-methlys. Liver protection w/ Milk Thistle is cheap (if you buy bulk powder), so it might be a good idea. Even though X-mass isnt methylated it may still hurt your liver. Tylenol can hurt your liver if you take too much. Remember that whiskey isnt methylated (not yet any ways) and alcohol still hurts your liver. I would say to at least avoid alcohol and tylenol while on X-mass.
Reaching your natural maximum potential before taking stuff like this is allways best. I'll probably give it a go even though im 5'-9" 190lbs and 23 years old. I readily admit that i would be better off saving X-Mass for another year.
From my own experience, tribulus, and creatine work really well (for safe legal stuff). There is also a whole lot of stuff out there that is supposed to work like arginine, fenugreek, ZMA, ect... I say try a tribulus product standardized for 20% protodioscin and maybe some anti-estrogens (formestane, ATD, 6-oxo) before trying the harder stuff.
GYNO=gynocomastia=man boobs=
Post cycle therapy is for preventing these and for restoring natural testosterone production after X-Mass and other supplements cause your nuts to shutdown (cease production). These harder suplements dont always cause total shutdown though. It also varies from user to user. I am not an expert, so do a lot of googling and reading before taking the X-mass or any of the other stuff on the market. I think I'll quit typing cause im starting to get a butt-cramp...