Possible Side Effects Metformin
Check with your doctor if any of these most common side effects persist or become bothersome:* Diarrhea; gas; headache; indigestion; nausea; stomach upset; temporary metallic taste; vomiting. Seek medical attention right away if any of these severe side effects occur:* Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain or discomfort; dizziness or lightheadedness; fast or difficult breathing; feeling of being unusually cold; fever, chills, or persistent sore throat; general feeling of being unwell; muscle pain or weakness; slow or irregular heartbeat; unusual drowsiness; unusual or persistent stomach pain or discomfort; unusual tiredness or weakness.

Drug Class and Mechanism Metformin
Metformin is a biguanide antidiabetic. It works by decreasing the amount of sugar that the liver produces and the intestines absorb. It also helps to make your body more sensitive to the insulin that you naturally produce.

More InformationMetformin here
If you have any questions about Hydrochlorothiazide, please talk with your doctor, pharmacist, or other health care provider.Metformin is to be used only by the patient for whom it is prescribed. Do not share it with other people.