I tried 瑪花 before and it did work for me but you will have to rememeber to keep your diet very straight too in order to help yourself to achieve the goal.
I tried "變靚x" last year, I spent HK$18XXX and total reduced 16 lbs. But need to take medicine (中+西). However, now my weight is increased 4~5 lbs after 1 year.