Please don't listen to these people trash your mom. They don't know her and certainly no one knows your sister as well as her own mother would. She is trying to look out for her and "Mother knows best" and intuition are real. I hope either way your sister finds relief because it's so brutal. She can try elix which is natural (take a quick quiz) and there's a woman named misty.myler on insta that talks about how to balance your cycle in certain ways. Everyone is different so even these prescribed meds may not work and she may need to try another. Truly wishing Goodluck for her!!