Inositol???

Okay so I have PCOS. My OB recently put me on BC to try to regulate my cycles but the side effects are very uncomfortable and that seems to be the case with all of them so I did my own research. I've found Inositol and decided to give it a try. However the bottle I ordered has 500mg capsules but I see that others on here are taking 2000mg. Does the dosage depemd on the person or would I need to take 2000mg for it to be effective? Any advice would be helpful. Also if you guys took any other supplements with Inositol and they worked well together I'd love to hear about them!