Does weight-loss drug help losing weight?

Weight loss mediction help to lose3-8% of total body weight if supported by a healthy diet and exercise.  

Not all, because most of weight loss drugs/ fat burning drugs can cause palpitations and not recommended for people with hypertension, high blood, and heart diseases. There are several kinds of diet try what's effective for you and do exercises or go to a gym to achieve better results and more beneficial in terms of improving health, endurance, body resistance,  and strength that just dieting or relying on weight loss drugs.