Reddit reviews Mental: Lithium, Love, and Losing My Mind

https://www.amazon.com/Mental-Lithium-Love-Losing-Mind/dp/0399574492

This is the book I’m referring to. You’re obviously not on lithium but it will give your parents insight on drugs for bipolar disorder.

https://www.nih.gov/news-events/news-releases/largest-study-its-kind-implicates-gene-abnormalities-bipolar-disorder

Here is a very comprehensive study that will give you insight as well. It highlights the importance of NON drug treatment and a solid support system