Zocor and foot cramps

I have been taking 20mg Zocor (simvastatin) for 14 mos post heart attack/stent placement(2) in L. ventricle. About 2 monts ago I developed severe muscle pain and weakness in right forearm/elbow, left elbow, dexterity problems in the hands from time to time. I have had for some time; a burning sensation in the right leg, foot cramps, fuzzy vision and other symptoms. I am also taking other drugs; atenolol, lisinopril, asprin and venlafaxine, so they all had their part.

My husband has been experiencing leg cramps, shoulder cramps, arm cramps, foot cramps, headaches, and muscle spasms in his chest. Has anyone heard of muscle spasms in the chest being caused by zocor? I have told him to go off the medication and see if the side effects disappear. Loss of strength in arms and hands as well. Fatigue too.