Metformin Hydrochloride Tablets USP are oral antihyperglycemic drugs used in the management of type 2 diabetes. Metformin hydrochloride ( N,N-dimethylimidodicarbonimidic diamide hydrochloride) is not chemically or pharmacologically related to any other classes of oral antihyperglycemic agents. The recommended starting metformin dosage for children ages 10 to 16 is 500 mg twice a day. For people over the age of 17, the usual starting dose is 500 mg twice daily or 850 mg once daily. Metformin is an inexpensive drug used to treat high blood sugar levels caused by type 2 diabetes. It is more popular than comparable drugs. How Metformin Is Used for Polycystic Ovaries. Polycystic ovarian syndrome is a common cause of anovulation and infertility in women. These women do not ovulate (release eggs) regularly and therefore have irregular menstrual periods. The recommended starting dosage of metformin is 500 mg twice daily. The maximum dosage for children age 10 to 16 is 2000 mg, and for adults age 17 and older is 2550 mg. Both metformin and metformin ER (extended release) treat type 2 diabetes by improving patients’ blood sugar control—but they are quite different and are not interchangeable. For Female Infertility: Starting taking metformin for try and get pregnant and have been on it about 2 weeks. I am having some side effects but my main concern is my period came and it’s heavy and staying longer than normal, hopefully it gets better Metformin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar. It is used in patients with type 2 diabetes. Metformin (Glucophage, Glucophage XR, Glumetza, Fortamet, Riomet) is a prescription drug used for treating type 2 diabetes in adults and children. Side effects, storage and dosing information, drug interactions, and pregnancy safety are provided. Metformin is a chemical kin to the French lilac plant, which was noted in the early 1900’s to lower the blood sugar. However, French lilac, like phenformin, turned out to be too toxic for use in humans.