Fast Five Quiz: Metformin

Mary L. Windle, PharmD

Disclosures

December 22, 2020

Common adverse effects associated with metformin include the following:

  • Inadequate vitamin B12

  • Headache

  • Diarrhea

  • Nausea

  • Vomiting

  • Gas

  • Abdominal swelling

  • Taste impairment

  • Weight loss

Infrequent side effects include the following:

  • Nail disorder

  • Skin rash

  • Stuffy and runny nose

  • Chills

  • Constipation

  • Dizziness

  • Excessive sweating

  • Flu-like symptoms

  • Heart throbbing/pounding

  • Indigestion

  • Intense abdominal pain

  • Muscle pain

  • Temporary face and neck redness

Rare adverse effects include the following:

  • Drowsiness

  • Acute respiratory distress syndrome

  • Increased blood acidity due to high levels of lactic acid

  • Inflammation of the liver with stoppage of bile flow

  • Liver damage

  • Low blood sugar

  • Megaloblastic anemia

Read more about adverse effects associated with metformin.

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