Found fíances secret medicine

Okay so, I’ll be posting this on a few groups in hope for some answers. My fiance and I are usually really opened books, yet this morning I was looking for my birth control, I left it on his work desk so I figured he threw it in one of his drawers. (He didn’t he put it on my desk) but I saw a pill bottle in there that I have never seen previously. I look at it, and it’s for male pattern baldness. Now I have not noticed his hair thinning or balding. But it’s always been a huge fear of his. I don’t want him to stop taking it, if he feels it’s good for him. My only worry is I’m pretty sure he got it from hims.com and I read that this medication causes a lot of issues with depression and suicidal thoughts.

He already suffers with those thoughts. I’m also a bit sad that he hid it from me, I want to ask him about it, and his health and how he’s doing and if he’s feeling any side effects. But I don’t want to embarrass him, I also want to make sure he knows he can tell me these things without judgement, because I don’t judge. I love him. We have a beautiful son together. So how should I start the convo?

Thanks !