Has anyone succeeded with diet herbal medicine?

Lately, I keep putting things in my mouth constantly, wondering if my stomach has grown or if I'm just stressed.

It's been a while since I saw acquaintances, and they said my face looks better... ㅠㅠ but they also said I've gained weight..

I think I gained about 5 kilograms during the winter. That's just my feeling...ㅠㅠ

I'm too afraid to step on the scale, so I haven't checked, but my clothes keep getting smaller...

I'm going on a trip to Vietnam in a month, and I need to lose weight within that time. Has anyone lost more than 10% of their weight in a month using diet herbal medicine?

A friend recommended it, but the medication costs are no joke, so I'm worried about wasting money without any effect, so I haven't tried it.ㅠㅠ