What kind of pill is purple, little, round, has a 30 on one side, and an M on the other side.

Not Medical Advice:Pill imprint M N 30 has been identified as Ropinirole hydrochloride 3 mg used in the treatment of restless legs syndrome; parkinson's disease

Monday, February 06 2012
Source: http://www.drugs.com/imprints/m-n-30-12248.html