Is collagen considered a protein powder? Advantages of both

Short answer: not really. “What separates proteins is their amino acid content,” registered dietitian Albert Matheny, Ridland, CSCS, previously told mbg. “Collagen has a completely different set of amino acids than a regular animal or plant-based protein powder.”
Animal proteins and some vegan protein powders contain complete proteins, so they count toward your daily protein intake. Collagen, on the other hand, is not, even though it is technically a protein itself.
They also provide very different benefits. So while protein powder may be useful for gaining muscle or keeping you full throughout the day, collagen can’t exactly check those boxes. (However, one small clinical study found that those who took collagen daily while participating in an exercise program gained more muscle mass1 than those who only did the exercise program.)