What is metformin used for?

Metformin helps the body use insulin more effectively and reduces the amount of glucose released by the liver. It is commonly used for type 2 diabetes alongside eating and activity changes, and a clinician may consider it for PCOS when insulin resistance, irregular ovulation, or metabolic concerns are part of the picture. It does not cure PCOS or replace personalised fertility care. The right dose depends on kidney function, other conditions, and medicines.

Take it with food and follow the prescribed schedule; this can make stomach effects easier to manage. Nausea, loose stools, bloating, and a metallic taste are common early complaints and may improve as the body adjusts. Do not double a missed dose. Tell your clinician about kidney or liver disease, heavy alcohol use, pregnancy plans, and every medicine or supplement you take. Some people need blood tests or a gradual dose change.

Contact a clinician promptly for persistent vomiting or diarrhoea, dehydration, unusual weakness, or worsening abdominal discomfort. Seek emergency help for trouble breathing, severe drowsiness, confusion, collapse, or feeling suddenly very unwell. Ask for advice before an operation or an imaging test that uses contrast, because metformin may need a temporary adjustment in some circumstances.

Ask what goal metformin has in your treatment, whether it should be taken with a particular meal, and how progress will be checked. If you have PCOS, ask whether the plan targets cycles, ovulation, blood glucose, or another concern, and what to do if pregnancy occurs.