I’ve taken it. It really worked for me when i took and was combining it with a gluten free & dairy free diet. Depends on what is going on with your body but I didend up getting 3 periods last year which going from 0 for years to that was great. I can’t take metformin either. Ovasitol is a brand though and if you find it too expensive you can maybe find other brands with the 40:1 Ratio.