A nurse is educating a patient who has been prescribed Atorvastatin. Which of the following instructions should the nurse include in the patient teaching?

A. "You should see benefits within days of starting your atorvastatin.": Atorvastatin works by lowering LDL cholesterol, but measurable improvements in lipid levels typically take several weeks. Immediate effects are unlikely, and full benefits depend on adherence and time. B. "You may consume grapefruit juice freely while on this medication.": Grapefruit juice inhibits CYP3A4 enzymes in the liver and intestines, which can lead to increased levels of atorvastatin in the blood. This raises the risk of adverse effects, particularly muscle toxicity. C. "Report any muscle pain, weakness, or tenderness to your healthcare provider immediately.": These symptoms may indicate myopathy or rhabdomyolysis, a rare but serious adverse effect of statins. Early reporting allows for prompt evaluation and potential discontinuation of the drug to prevent complications. D. "You can use an NSAID prior to taking your atorvastatin to prevent flushing.": Flushing is not a common side effect of atorvastatin; this teaching applies to niacin, not statins. Using NSAIDs prophylactically for atorvastatin is unnecessary and not clinically indicated.