The most frequent adverse effects thought to be related to rosuvastatin include myalgia, constipation, asthenia, abdominal pain, and nausea. Adverse effects reported without attribution of causality in at least 2% of patients receiving rosuvastatin include pharyngitis, headache, diarrhea, dyspepsia, nausea, myalgia, asthenia, back pain, flu syndrome, urinary tract infection, rhinitis, and sinusitis.