I suggest that you read about melatonin and its possible side effects, e.g. at https://examine.com/supplements/Melatonin/ https://examine.com/supplements/Melato

I suggest that you read about melatonin and its possible side effects, e.g. at https://examine.com/supplements/Melatonin/ https://examine.com/supplements/Melatonin/ that has a very thorough writeup.