Nerve conduction test symptoms and conditions

54 years old male on zocor (simvastatin) 40mg for 4 years, two years ago I start with problems in my shoulders (feel horrible) arms, hands and legs. Pain, numbness, cramp, tingling, muscle spams and weakness, my body is very weak.
I visited several doctors and pain management, therapy, medicine, nerve conduction test, MRI, CTscan, nerve block, carpal tunnel surgery, injection in my cervical and toracic spine I don't feel relief doctors doesn't knows the statin fault.
I found this page and I have been off zocor for 4 weeks and not relief yet.
Does any one know how long it takes zocor to get completely out of my system?

2 yrs. ago my husband had been on Vancomycin for an infection from a hip operation. He had an allergic reaction and was given Levaquin in the ER. Not long after the dose was given, he was not able to walk at all his fever spiked and he said he was blind at one point. It did not last but since then he had been slowly declining. He has trouble with his inner ear balance and he can hardly lift his right foot to clear the floor. He bearly feels anything from the knee down on both legs. We have been to many specialists/neuros, MRIs, nerve conduction test and there is nothing to show what is the cause. Can anyone tell me how we could find out for sure if Levaquin may be the culprit.

Sue