Atorvastatin Side Effects: 15 Things Worth Knowing
Atorvastatin is a widely used statin that lowers LDL cholesterol and helps reduce the risk of heart attack and stroke. Most people tolerate it well, but knowing the potential side effects is important.
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15 things to know
Muscle aches — soreness or aching can occur.
Muscle weakness — unexplained weakness should be reported.
Muscle cramps or spasms can occur.
Headache is a relatively common side effect.
Dizziness may occur in some people.
Nausea or indigestion can occur, particularly after starting treatment.
Diarrhea or constipation are possible.
Joint or back pain has been reported.
Sleep problems can occur.
Blood sugar can increase slightly in some people taking statins.
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Liver-enzyme changes can occur. Serious liver injury is uncommon, but symptoms such as yellow skin/eyes, dark urine, unusual tiredness, or upper-abdominal pain warrant medical attention.
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Serious muscle injury (rhabdomyolysis) is rare but potentially dangerous. It can cause severe muscle pain or weakness and dark/brown urine and can damage the kidneys.
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Drug interactions matter. Certain antibiotics, antifungals, antivirals, immunosuppressants, fibrates, colchicine and other medicines can increase the risk of muscle toxicity.
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Grapefruit can interact with atorvastatin. Large quantities can increase exposure to the medicine; follow your clinician/pharmacist’s advice about grapefruit.
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Age and other health conditions can affect risk. Being 65 or older, having kidney problems, uncontrolled hypothyroidism, or taking higher doses can increase the risk of muscle complications.
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When should you take muscle symptoms seriously?
Don’t ignore unexplained, persistent muscle pain, tenderness, or weakness, particularly if it is severe or accompanied by fever, unusual tiredness, or dark urine. Contact your healthcare professional promptly.
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Should you stop atorvastatin?
Don’t stop it on your own. Atorvastatin is prescribed because lowering cholesterol can substantially reduce cardiovascular risk. If you develop side effects, your clinician can determine whether the medicine is responsible and may adjust the dose, change the statin, or consider another cholesterol-lowering approach.
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Bottom line: Muscle symptoms are the side effect people hear about most, but serious muscle injury is rare. For most people who need it, the cardiovascular benefits of atorvastatin outweigh its risks.
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