Mass Fuel Xtreme delivers a powerhouse formula of 600 incredibly efficient mass-promoting calories. Formulated with TwinLab's exclusive 4-stage time release carb blend for sustained energy, 50 grams of fast and slow release proteins packed with BCAAs, and super-efficient fats from MCT oil (Medium Chain Triglycerides) making it their best lean mass and muscle builder ever.

- Maximize Lean Muscle Growth
- Enhance Protein Synthesis
- Speed Recuperation After Intense Workouts

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Mass Fuel Xtreme - Free Sample