Massage technique symptoms and conditions

Can anyone tell me if you can just stop Lipitor cold turkey or do you have to stop it slowly? I have been taking Lipitor for 5 years now and I have been trying to find out what is causing my leg weakness. I mentioned it to my doctor who said it si just a fact of getting older. The problem is getting worse and I noticed it started about 3 months after taking the Lipitor and has steadily gotten worse. I am 49 years old a little over weight {which I am working on}. I also noticed my asthma which I haven't delt with since a small child has come back. This may or may not have to do with the Lipitor but the pain in my knees and legs I believe do. It really hurts in the joints of my legs and sometimes in my shoulder area.