I was prescribed Metformin and Atorvastatin, so don't know which caused what, though the Metformin was the most likely one to cause the dreadful internal upsets with incontinence, my sense of taste was altered so everything tasted strange - my memory was affected but I suspect the statin did that, and I had terrible pains in my muscles and joints. I thought that I was going to have to move into a care home, but I threw out the tablets just before Christmas 2016 and it only took a year or so to recover.