I have no experience with this compound, but I have posted a link below that I hope will answer your questions.

Methylhydroxynandrolone is a Nandrolone derivative however the 4-OH group added inhibits a conversion to DHT (dihydrotestosterone) or DHN (dihydronandrolone) making this a mildly androgenic and highly anabolic compound. There is also no conversion to estrogen or progesterone. This makes the compound favorable for those in "cutting" cycles. Users of this product would typically experience increases in lean mass as well as moderate strength gains. Increased nitrogen retention, making the body a more anabolic environment. Central Nervous System (CNS) stimulation, not in a jittery ephedrine type feeling but you should be able to sleep less and still feel refreshed upon waking. Less time is needed for recovery between sets and workouts. There should be no decrease in sex drive, and should help with joint pain. Increases in the ability to lose fat while increasing vascularity. The side effects of this compound have shown to be very mild with few side effects. But all steroid hormones may cause acne, accelerated male pattern baldness, gynecomastia, testicle shrinkage, increased facial and body hair in men. As well as voice deepening and clitoral enlargement in females. However, this product has typically shown to be on the low end of such side effects.

http://www.mindandmuscle.net/forum/34437-dream-steroids-surprisingly-att...