(Concern) Diet with herbal medicine

I am curious about the effects of diet herbal medicine.

Sometimes on the internet, I see before and after photos of taking diet herbal medicine.

It seems that the effect is good based on the photos being uploaded. I'm curious if noticeable results can be achieved with diet pills alone without exercise.

I'm also curious about the price. I'm worried about the cost. Since there are many people looking, I think the price will be high.