Hi Dr.Rogala My Son Age 58 Gave This Drug For

Hi Dr.Rogala my son age 58 gave this drug for me to possible use . I thought I should check it out before taking it. I have afb, have had by pass operation for my heart . I m 85 years old all my muscles ache and have a hard time lifting a coffee to cup with out it hurting . my dr says the problem could be Rosuvstatin ( crestor) what do you think ???????