Are there any side effects of Da-aeote herbal medicine?

When I was worried about not losing weight after my first childbirth

A friend who gave birth around the same time lost a lot of weight by taking diet herbal medicine~

But... the yo-yo effect came back, and I ended up gaining more weight than beforeㅜㅜ

Back then, I heard that taking herbal medicine to lose weight would cause a lot of yo-yo effects, so I didn't take it.

These days, isn't there a rebound?

That also depends on how well it is managed, right?