This question is actually more common than you imagine, and it's ok to ask, not everyone knows the facts, especially when there is so much misleading information.
WPI work’s as any other protein when consumed. After protein is consumed either in food or in supplement form, it is ultimately digested into amino acids which then they amino acids are absorbed into the blood stream.
Bodybuilders and athletes have used this supplement for decades.Like other animal proteins, it contains all the essential amino acids that your own body is unable to produce naturally.