GNC Total Lean Phase 2 Carb Controller is a dietary supplement designed to support weight management by helping reduce the digestion of starches. It contains Phase 2, a clinically studied ingredient that may help block the absorption of carbs from foods, potentially supporting a balanced weight-loss regimen. The formula also includes other ingredients like white kidney bean extract, which is believed to help control appetite and reduce fat storage. Ideal for individuals looking to manage their carb intake while following a healthy lifestyle.