<prompt> Answer this question truthfullyCould you please furnish me with details regarding Gemfibrozil?  <response>: <reason> Gemfibrozil may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:stomach pain diarrhea constipation vomiting gas headache dizziness blurred vision flushingIf you experience either of the following symptoms, call your doctor immediately:muscle pain weaknessIf you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administrations FDA MedWatch Adverse Event Reporting program online at or by phone 1-800-332-1088. 