I Have Had A Stroke Back In 2006 And Been

I have had a stroke back in 2006 and been trying to rebuild muscles every since ,What is Pure Micronized Creatine Monohydrate Powder? and Do you think it could help me rebuild my muscles in my leg which is 1/2 the size it was before ,I'm 51 years of age .feeling like 30.
So Sorry to bother you I dont have the money I though it was free.......... :( I just have medicaid and SSI)