Learn about Lipitor (Atorvastatin Calcium) may treat, uses, dosage, side effects, drug interactions, warnings, patient labeling, reviews, and related medications. 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. Initially, 10 to 20 mg PO once daily. May start at 40 mg PO once daily in patients requiring greater than 45% LDL-reduction. The dosage range is 10 to 80 mg PO once daily (mean LDL reduction range: 43% to 60% LDL). Lipitor (atorvastatin) is a prescription drug used to lower blood cholesterol. Common side effects are fatigue, flatulence (gas), heartburn, and constipation. Drug interactions, dosage, and pregnancy and breastfeeding safety information are provided. For the treatment of hypercholesterolemia, including hyperlipidemia, hyperlipoproteinemia, or hypertriglyceridemia, as an adjunct to dietary control, for the purpose of reducing the risk of cardiovascular events (e.g., myocardial infarction prophylaxis, stroke prophylaxis). Atorvastatin Calcium reference guide for safe and effective use from the American Society of Health-System Pharmacists (AHFS DI). See risks & benefits. Learn about LIPITOR® (atorvastatin calcium), a prescription treatment for high cholesterol. 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. 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. 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.