Vegan/plant protein powder vs whey protein powder - which one's better? 👉Protein from animal sources has all the essential amino acids whereas most plant-based protein sources except soy are not completely proteins and they tend to be low in: a) Amino acids b) Methionine c) Lysine d) Leucine 👉One may need to consume a higher quantity of plant protein to achieve a similar muscle protein synthesis effect as that of animal protein. 👉In research studies, whey was found to be superior for 20 grams