Zocor Side Effects: have been taking 20mg for about two weeks. a couple days after i http://www.medications.com/effect/view/41079 have been taking 20mg for about two weeks. a couple days after i started taking the stuff i started experiencing chest pains at night that would wake me up, coupled with leg pain. it's getting worse; now, after two weeks i am having severe lower back pain call your MD, this could be a side effect of the zocor Thu, 30 Apr 2009 20:36:23 -0400 http://www.medications.com/effect/view/41079?item=19391 call your MD, this could be a side effect of the zocor http://www.medications.com/effect/view/41079?item=19391