Core series. Nutrition. Lean muscle. Weight management. Aspartame free. Aminogen. For the purest mass gains. True-Mass Product Highlights: Sustains release action; Multi-functional AM to PM protein and carbohydrate matrix; Ultra-premium protein sources; Aspartame free; Bioactive protein utilization enzymes A Zorb (Papain and Bromelain); BCAAs and other essential and non-essential amino acids; MCTs, EFAs, Glutamine Peptides. Designed for any individual who needs a calorie- and nutrient-dense alternative to regular foods to assist with gaining lean muscle mass.