Maybe a year. They had me on statin drugs for 8 years, my legs got so weak I could hardly go up a couple of flights of stairs. Finally, out of desperation I researched effects of statin drugs and was shocked at what I found. When I showed the cardiologist all the documentation he said, "I guess we can take you of them, you don't have high cholesterol anyway". I could not find one article that was positive on statins drugs. I have gained some of the strength back in my legs, but I still have a little weakness. Do your research, if it wasn't for the internet, I wouldn't be writing this.