Critical Mass Professional

Critical Mass Professional is the UK's leading mass gain supplement, engineered to help you build lean muscle while meeting your calorie targets. Each serving delivers 42g of dual-action protein—combining fast-absorbing whey isolate with slower-digesting sources—plus a scientifically-formulated matrix of HMB, glutamine, leucine, and creatine to maximise performance and recovery. Our reduced sugar formula includes added CLA and MCT powder for quality calories, while chromium supports efficient macronutrient metabolism. Whether you're pushing through intense training sessions or fuelling muscle growth, Critical Mass Professional provides the high-calorie, high-protein foundation serious lifters trust to deliver results.