Inquiry about side effects of hair loss supplements

Recently, I have been noticing a lot of hair falling out on my pillow after I wake up.

I still have plenty of charcoal, so it's not for treatment yet; I'm planning to try taking supplements.

How are the effects and safety of biotin and brewer's yeast, which are said to be good?

Are there any side effects?

Please recommend supplements that have shown significant effects.