I will be seeing my doctor in December to renew my Cholesterol medication prescription for the next year. I have been taking 10mg tab crestor for quite a few years now. My cost for crestor has risen quite a bit this year. My husband has excess cholesterol medication of 20mg tab Simvastatin. I plan on asking my GP for a generic cholesterol prescription from now on since I just retired. I cannot afford $105.00 for 90-days by mail-order. Or I can pay $260.00 for 90-days at the pharmacy. Can I take my husband's until December, 2015?