I have been taking 10mg Zocor for about 13 years. Have had some tingling in my toes, muscle weakness and joint soreness. It could be attributed to age rather than Zocor, but I don't really know. I just read about Coenzyme Q-10 and Zocor. It is commonly called CQ10 and is important to the process that produces 95% of the energy at the cellular level. Zocor and other statins depletes half of the CoQ10 that your body manufactures and can lead to muscle weakness and heart failure among other things. I just started taking CQ10 and have not had enough time to evaluate it on myself yet. It is sold off the shelf in any drug store. Look it up on the web for details and recommended dosages. I hope it works for me as well as you.