Metformin doses vary by age, condition, and kidney health. Here’s what typical dosing looks like for adults, kids, and those with PCOS. Detailed Metformin dosage information for adults and children. Includes dosages for Diabetes Type 2; plus renal, liver and dialysis adjustments. Metformin alone: At first, 500 milligrams (mg) two times a day taken with the morning and evening meals, or 850 mg a day taken with the morning meal. Your doctor may increase your dose if needed until your blood sugar is controlled. 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 metformin dose calculator instantly shows your recommended dose, maximum dose, timing, and personalized recommendations. The metformin dosage chart tool provides a clear week-by-week schedule from starting dose to maintenance therapy. Our comprehensive metformin dosage guide and chart breaks down starting doses, maximum limits, and timing recommendations for both immediate-release and extended-release formulations. 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. NHS medicines information on dosage for metformin, how to take it and what to do if you miss a dose or take too much. 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. 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.