Lipitor and insomnia. I started taking 10 mg of Lipitor in the mornings over 3 weeks ago. If you do get insomnia, research many of the natural methods of alleviating insomnia without taking more drugs. Article entitled Possible Side Effects Of Lipitor Include& InsomniaWe suspect that Lipitor was somehow involved. . . . 9 lb, was diagnosed with insomnia and was treated with Lipitor. Since starting I have had moderate to severe insomnia usually getting only 2 - 3 hours of sleep. I never had ... more