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Prolab's Lean Mass Matrix™ Protein distinguishes itself from other protein supplements by delivering 40 grams of sustained release bioactive proteins, essential fatty acids to build new cellular components including micellar casein and 2 grams of L-Glutamine to build and repair muscle tissue. The protein's formula also contains essentially fatty acids to build new cellular components and 4 grams of dietary fiber for additional health and digestive benefits.

Used in combination with the Matrix Food Systems (Lean Mass Matrix™ and Naturally Lean Matrix™) or with whole foods, Lean Mass Matrix™ Protein can support even the most stringent diet to help you get the results you deserve.

This product provides athletes with a convenient source of protein in a delicious shake mix. Prolab's exclusive formula delivers protein sources that authentic bodybuilders need to achieve their goals as well as the complimentary components critical to maximize nutrient utilization.