I've been on both, and recently switched my Diane 35 to Yasmin. I didn't have much luck with metformin and Diane 35 in relation to reducing and controlling facial hair. Metformin has helped me lose some weight. BCP in general has helped with oily skin/acne. I actually think that Yasmin is having a more positive effect on my facial hair than Diane 35 did.
For me if I could only be on Diane 35 or Metformin I would choose the Metformin. With weight loss most pcos symptoms are reduced.
MB |