Are there natural remedies for PCOS?

My sister was diagnosed with Poly cystic ovary syndrome at age 25. She was diagnosed after having increasingly irregular periods since the age of sixteen, and had a golf ball-sized cyst rupture on her right ovary. The doctor recommended birth control, she said it causes her to gain weight and feel sick. I’m concerned because I took the pill for about two years and it messed me up to the point that I had to get off it, and I had to have surgery. I have taken herbal remedies for less severe hormonal problems in the past, and wonder if there are any remedies out there for someone like her?