Soak plantain and bitter gourd in water and have a drink half an hour after lunch and dinner every day. This is the prescription in my Chinese medicine book. Several students used it, some lost 12 kg in a month, and some lost weight.
You can buy 15.5kg, plantain and bitter gourd slices in Chinese medicine shops. 10 yuan can drink for 2 weeks.
I am very careful to tell you the effective methods I know, hoping to adopt my answer. Thank you.