Metformin
Riomet is the brand name for metformin hydrochloride, an oral medication used to treat type 2 diabetes mellitus. It is typically prescribed alongside diet and exercise to help control blood sugar levels in adults and children over 10 years old. Riomet is often used as a first-line treatment for type 2 diabetes and may be used alone or in combination with other diabetes medications.
Riomet (metformin) is an oral medication used to control blood sugar in patients with type 2 diabetes.
Key facts at a glance
- RxNorm
- 405304
- Generic
- Riomet
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Riomet is indicated for the treatment of type 2 diabetes mellitus in adults and pediatric patients 10 years of age and older. It is used to improve glycemic control as an adjunct to diet and exercise.
Riomet works by decreasing hepatic glucose production (reducing the amount of sugar made by the liver), decreasing intestinal absorption of glucose, and improving insulin sensitivity in the body's tissues, allowing the body to use insulin more effectively.
Riomet should not be used in patients with severe kidney impairment, metabolic acidosis, or diabetic ketoacidosis. It may cause gastrointestinal side effects such as nausea and diarrhea. Lactic acidosis is a rare but serious risk, particularly in patients with kidney dysfunction, liver disease, or conditions causing hypoxia. Vitamin B12 levels should be monitored during prolonged use.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 9, 2026. · Read our editorial policy