Tag: Protein powder absorption

While some claim protein can remain for days, amino acids from protein powder typically circulate in your bloodstream for several hours before being used or converted. The exact duration that protein powder stays in your system depends heavily on its type, with rapid-digesting whey clearing faster than slower-digesting casein or plant-based proteins.

According to a 2018 study in the *Journal of the International Society of Sports Nutrition*, while the total amount of protein absorbed is virtually unlimited, the speed at which it passes from the gut into the bloodstream varies significantly by source. So, is protein powder fast absorbing? The digestion rate is not uniform and understanding these differences is key to optimizing your supplementation.