Side Effects of Statins?

My husband has high cholesterol and he was prescribed generic Zocor. It took 3 days before the symptoms were present but he was definitely allergic to Zocor and the signs of that was itching. We could not get him to stop itching, we even gave hime benadryl for it. The doctor said we were doing the right thing, but he just had to get it out of his system.k