I started taking pills for it a few years ago. It was ridiculously easy to do. I did it online, it auto-renews, and it's an easy chewable I take every morning.
I think a lot of guys have the impression that hair treatments are bullshit, because for a while there they were. But the new shit works, at least for me.
No side effects or downsides for me. My hairline is just paused, even rewound a little bit.