Does herbal medicine dieting work?

I heard that you saw results with herbal medicine or pills when talking about dieting.

Will taking herbal medicine or pills help with weight loss?

According to my search, it is said to give a feeling of fullness, help regulate appetite, and increase basal metabolic rate.

Is that really true?? If I just control my diet a little, will I lose weight?

Is it fat mass that is decreasing??

Are there any side effects?? If it works, I would like to try it once.