The only prescription drugs which are FDA approved for losing weight are for those who suffer from obesity and often interfere with fat absorption, which can lead to poor vitamin uptake. Herbal supplements and non-prescription weight loss pills can work by changing the feedback and release of hormones from your brain, increasing your metabolism and utilizing body fat. They alter your body’s natural metabolism, often cause rapid weight gain when use is ceased and can be quite costly. The healthiest pill really is putting time and effort into quality nutrition and exercise. You will appreciate your hard work when you see your honest results!