15 effects worth knowing about
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Muscle aches or tenderness — one of the better-known effects.
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Muscle weakness or cramps — especially important if new or unexplained.
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Very rare muscle breakdown (rhabdomyolysis) — can damage the kidneys; dark/brown urine with severe muscle symptoms is an emergency warning sign.
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Joint or back pain — reported in clinical use.
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Diarrhea
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Constipation, gas, or indigestion
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Nausea or abdominal discomfort
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Headache
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Dizziness
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Sleep problems or nightmares
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Memory problems or confusion — reported with atorvastatin, although these are not among its most common effects.
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Tingling or altered sensation — uncommon reports include numbness/tingling in the fingers or toes.
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Blurred or altered vision — uncommon/rare reports exist.
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Changes in blood sugar — atorvastatin can increase blood glucose/HbA1c, which matters particularly if you have diabetes or are at risk for it.
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Liver problems — elevations in liver enzymes are possible; serious liver injury is rare. Yellow skin/eyes, dark urine, unusual fatigue, or upper-abdominal pain should be medically assessed
