Metformin eat acne, consider may be due to metformin caused by skin allergies, can be adjusted under the guidance of the doctor medication. Metformin is the first-line drug for the treatment of type 2 diabetes mellitus, with obvious hypoglycemic effect, especially suitable for type 2 diabetes mellitus patients with obesity. Skin allergy is a common adverse reaction of this drug, and when it occurs, you should seek medical advice and stop the drug or adjust the dosage under the guidance of a doctor. Other adverse reactions of metformin include gastrointestinal reactions, lactic acidosis, etc. It is contraindicated in patients with serious complications, pregnant women, breastfeeding, alcoholism, and severe renal insufficiency. There are many reasons for acne, if metformin ate acne it is recommended to go to the regular hospital in time.