Learn how metformin treats type 2 diabetes, including dosage, side effects, warnings, and its off-label use for weight loss and PCOS. Reviewed drug info Metformin dosage guide covering starting doses, maximum daily doses, extended-release dosing, kidney function, and dose adjustments. Typically, metformin treatment starts with a lower dose, such as 500 milligrams (mg) twice daily or 850 mg once daily. The exact dosage is tailored based on individual health factors under the guidance of a healthcare professional. For adults, the daily metformin dosage should not exceed 2,550 mg. The standard metformin dosage for Type 2 diabetes in adults is 850-1000 mg of metformin IR per day or 1000-2000 mg of metformin ER. Use our metformin dosage chart to find the recommended and maximum dosage of metformin. Our comprehensive metformin dosage guide and chart breaks down starting doses, maximum limits, and timing recommendations for both immediate-release and extended-release formulations. Metformin is a diabetes medication that helps control blood sugar levels. Here’s how to dose metformin, how to make adjustments, and potential risk factors for adults. Metformin alone: At first, 5 milliliters (mL) two times a day, or 8.5 mL once a day with meals. Your doctor may adjust your dose if needed until your blood sugar is controlled. Controlled clinical studies of metformin did not include sufficient numbers of elderly patients to determine whether they respond differently from younger patients This article describes the dosages of metformin, as well as its strengths and how to take it. When taking metformin, always follow the dosage prescribed by your doctor. Detailed Metformin dosage information for adults and children. Includes dosages for Diabetes Type 2; plus renal, liver and dialysis adjustments.