The medicine of Generic Phentermine 15 mg is used for weight reduction in patients with obesity. It is used in patients with obesity who have not been able to lose weight with diet and exercise alone. This medicine works by suppressing your appetite. It is used with a doctor-approved exercise, behavior change, and reduced-calorie diet program to help you lose weight. It is used by certain overweight people, such as those who are obese or have weight-related medical problems. Phentermine is only approved for short-term use (12 weeks or less). But your prescriber may be OK with you taking it longer based on new studies that show it\'s likely safe. If you have heart disease, a history of drug misuse, or consume alcohol regularly, phentermine may not be the best weight-loss medication for you. Phentermine is used short-term to help with weight loss in people who have obesity or are overweight. Common side effects include fast heartbeat, high blood pressure, and restlessness.