Oriental Medicine Diet

As I enter middle age, I am gaining weight and it's hard to lose the fat I gain.

Is it because of a decreased basal metabolic rate or because of eating a lot?

I used to take herbal medicine pills after having a baby.

My appetite has stabilized, and I've lost weight, which is good, but since the weight dropped rapidly, I was worried about a rebound. I felt weak and couldn't exercise, so I stopped eating once I reached my target weight.

I think taking medicine might be better than just dieting. Besides methods that suppress appetite, are there any traditional medicines that help you lose weight healthily?

Is there any supplement or mild medication to help with weight loss?