Zocor and suffered side effects

This post is about my mom she was put on Vytorin which is a combination of Zorcor and Zetia. Her cholesterol was not all that high but her Dr wanted her to try it to see if it would come down. She was on it for one month and her cholesterol droped from 195 to 86 BUT she was having really bad headaches and her neck would be stiff her legs hurt and she had blurred vision in her left eye only and shooting pain in the left side temple. Before taking Vytorin she was in pretty good shape for a 71 year old but not she is so tired all the time, I am really worried about her overall health. Yesterday when I took her back to her Dr to find out why she was still having these problems he said the medician should already be out of her system since she quit taking it on Nov 17. I requested that he send her to the hospital for blood test since Vyortin had been known to make blood test abnormal. I also requested a CoQ10 Blood Test which should show any damage to the muscle tissue which can be a side effect of the Vytorin it breaks down muscle tissue in some cases. I really think MD's need training on these drugs before giving to patients. Also do anyone know how long it takes these meds to get out of the systems. Has anyone else had these problems. Thanks for any response and help. Sharon