SARMs is the abreviation for a class of drugs.   The full name is selective androgen receptor modulators.  Basically this family of drugs acts like testosterone.  The difference being that it can be customized to eliminate the bad side effects.  I know of at least two drugs which are soon to be available.  The first one is called S-4 and the second is Ostarine.  I believe these drugs may act like bremelanotide (PT-141) ;but,  without the side effects.  I hope this thread will  help keep people informed of this family of drugs.  I know a little about each.  I'm hoping others may add to my meager knowledge.  
1) Ostarine is aimed at Cancer patients.  Produced by GTX/Merck.  Aimed at Men and  Women.  PhaseIIb.
2) S-4 is much the same as Ostarine.  Only used in the lab. Available for  testing in rats.