On metformin 500mg for month & 1/2 for pcos, & on birth control, started period but no other changes. need higher dose or give more time? yes isln rst

I would give it: more time but talk to your doctor and see what they recommend. Best of luck!

Metformin: 6 weeks could be long enough to consider a change in dose. It depends on what is your goal for treatment. I am not clear if you are treating the insulin resistance, in which case your doctor is probably checking hemoglobin a1c every 3 months, or if you are trying to improve fertility in PCOS. Most doctors prefer to increase slowly to minimize GI upset.