These tricks will always be cringe because the science of weight loss already exists.
Weight control is all about calories, to lose weight you have to enter a calorie deficit (consume more than your intake) to gain weight you have to enter a calorie superavit (consume less than your intake). Your daily calorie baseline can be measure and it varies on current weight/activities/metabolism/etc… No drug will save you from that.
yes and no, something like a powerful appetite suppressant would make it much easier to adhere to calorie deficit