Metformin oral medication, the current clinical generally made into capsules, tablets, and does not exist metformin ointment, can not be used to apply face. Metformin is a hypoglycemic drug, clinically used in the treatment of type 2 diabetes. This medication needs to be taken in small doses under the supervision of a doctor. But not all diabetes can use this kind of drug, if there is a serious infection, or with acute alcoholism, liver insufficiency, acute alcoholism can not take the drug. At the same time, long-term use of this drug is likely to reduce the absorption of vitamin B12, therefore, folic acid, vitamin B12 deficiency has not been corrected, also should not take the drug. Metformin should be taken orally correctly, follow the doctor’s instructions for medication, do not believe in prescriptions. If you experience any discomfort during the medication, it is recommended that you seek medical attention in a timely manner, and do not use the medication or adjust the dosage of the medication privately.