Does metformin treat polycystic ovary syndrome?

Metformin changes how the body responds to insulin and may lower excess insulin levels. For some people with PCOS, this can support more regular ovulation, more predictable periods, or help with fertility planning. It may also be considered when blood sugar regulation is a concern. Its effect varies, and it is not a treatment for every PCOS feature such as unwanted hair growth or acne.

PCOS is a long-term hormonal and metabolic condition. A clinician may combine metformin with cycle management, nutrition and activity advice, or other medicines depending on your symptoms and pregnancy plans.

Discuss why metformin is being offered and what change you are monitoring. Take it exactly as prescribed, usually with food if advised, and mention stomach upset, diarrhoea, or nausea rather than stopping it without guidance. Tell the clinician about kidney problems, other medicines, and whether you are trying to become pregnant. Keep track of bleeding patterns and any treatment goals so the plan can be adjusted.

Seek prompt medical advice for severe or persistent vomiting, marked weakness, breathing difficulty, or confusion while taking metformin. Arrange a review if side effects prevent eating or drinking, periods remain very irregular, or pregnancy occurs while your medicines are being reviewed.

Ask which PCOS feature metformin is intended to address, when you should expect a review, and what monitoring is needed. You can also ask how it fits with contraception, fertility treatment, or medicines for blood sugar.