Metformin and alcohol interactions may occur.
There are potentially life-threatening consequences of mixing alcohol with the drug metformin. One could develop hypoglycemia, extremely low blood sugar. Those with low blood sugar could experience dizziness, drowsiness, confusion, blurry vision, and a headache.
The other potential problem is lactic acidosis, a condition that involves the build-up of lactic acid. This lactic acid can cause damage to the liver, affect the body’s pH level, and cause the breakdown of muscle tissue.
Alcohol doesn’t interact with metformin directly, but it can exasperate diabetes, making the medication less effective. Alcohol increases the risk of uncontrolled diabetes including low blood sugar and lactic acidosis.