Question: how long do you have to be on metformin to get pregnant?
Answer: A Finnish study20 of 320 women who received metformin (1500–2000 mg/day) or placebo for 3 months prior to fertility treatment, and for a further 9 months during treatment and up to 12 weeks of gestation, demonstrated an increase in pregnancy rate from 40.4% to 53.6% (OR 1.61, 95% CI 1.13–2.29), with obese women ...