I contacted my Dr. with regards, to this problem around six weeks ago, he just said lots of people take both medications and they're fine. Yesterday on returning from holiday I find a letter from the practice with a prescription and message inside saying I must change my Simvastatin to atorvastatin. My dose was 40mg plus Amlodipine at 5mg. I have a lot of muscle pain as I have Fibromyalgia. I am 63 years of age, anything detrimental to my body is going to have a bigger impact on myself and elderly patients.