These are the known side effects of metformin.
Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Metformin/Pioglitazone:
Cold-like symptoms; diarrhea; headache; indigestion; mild weight gain; nausea; stomach upset.
Seek medical attention right away if any of these SEVERE side effects occur when using Metformin/Pioglitazone:
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); blurred vision or other vision changes; bone pain; chest pain or discomfort; dark urine; difficult or painful urination; dizziness or lightheadedness; fainting; fast or difficult breathing; feeling of being unusually cold; general feeling of being unwell; muscle pain or weakness; pale stools; persistent loss of appetite; severe or persistent headache, nausea, or vomiting; shortness of breath; slow or irregular heartbeat; sudden unexplained weight gain; swelling of the hands, ankles, or feet; unusual stomach pain or discomfort; unusual drowsiness; unusual tiredness or weakness; yellowing of the eyes or skin.
You may find these links useful as well.
- Metformin Information for Consumers
- Metformin Information for Healthcare Professionals (includes dosage details)
- Side Effects of Metformin (detailed)
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