What are side effects of Glucophage?

Glucophage (metformin) may cause side effects that may be severe for some people. In rare cases, Glucophage may cause a severe allergic reaction that leads to difficulty breathing, swelling in the face or throat, and hives. If you develop these symptoms, call 911 right away. Glucophage may also increase the risk for a serious condition called lactic acidosis, or a buildup of acid in the blood.

If you experience symptoms such as shortness of breath, light-headedness, fainting, weakness, slowed heartbeat, feeling cold, muscle or stomach pain, or unusual sleepiness, get emergency medical attention immediately.

Glucophage may also lead to hypoglycemia (low blood sugar), causing symptoms like excessive hunger, headache, dizziness, blurred vision, fast heartbeat, tingling in the hands and feet, cold sweat, shaking, and fainting. Glucophage may also lead to hyperglycemia (high blood sugar), causing symptoms such as confusion, drowsiness, rapid breathing, increased urination, and increased thirst.

More common side effects of Glucophage may include nausea, diarrhea, upset stomach, vomiting, headache, or a temporary metallic taste. Other side effects may be possible, so talk to your doctor if any new or unusual symptoms develop while taking Glucophage.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.