Atorvastatin is a prescription medicine used to treat high cholesterol. It is marketed as a calcium salt under the brand name Lipitor (atorvastatin calcium), produced by Pfizer. Consumer information about the medication AMLODIPINE/ATORVASTATIN - ORAL (Caduet), includes side effects, drug interactions, recommended dosages, and storage information. Read more about the prescription drug AMLODIPINE/ATORVASTATIN - ORAL. Lipitor is the brand name of atorvastatin, a statin medication prescribed to lower cholesterol and triglycerides in the blood. High cholesterol levels increase the risk for heart disease, stroke. Atorvastatin oral tablet doesn’t cause drowsiness, but it can cause other side effects. More common side effects. Some of the more common side effects that can occur with use of atorvastatin. Along with its needed effects, atorvastatin may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention. Atorvastatin calcium USP is a white to off-white crystalline powder that is insoluble in aqueous solutions of pH 4 and below. Atorvastatin calcium USP is Soluble to freely soluble in methanol, slightly soluble in alcohol, insoluble to very slightly soluble in distilled water, in pH 7.4 phosphate buffer, and in acetonitrile. See risks and benefits. Find answers to common questions about treatment with LIPITOR® (atorvastatin calcium) tablets. Learn about Lipitor (Atorvastatin Calcium) may treat, uses, dosage, side effects, drug interactions, warnings, patient labeling, reviews, and related medications. Lipitor (atorvastatin) is a statin used for the treatment of elevated total cholesterol, LDL, triglycerides, and to elevate HDL cholesterol. Side effects of Lipitor include: Drug Information on Lipitor (atorvastatin) includes drug pictures, side effects, drug interactions, directions for use, symptoms of overdose, and what to avoid.