Are diet pills effective?

Are there any side effects from using herbal medicine for dieting?

A friend of mine tried taking herbal medicine pills before.

I just thought that since you're feeling very depressed, it's not something to eat.

I saw a post on the cafe that some people have successfully lost weight using herbal medicine...

Do herbal medicines and diet pills need to be prescribed based on your body type or after a medical consultation?

Are there any other people like my acquaintance who experienced side effects?