If you are looking for protein powders....do amino acids instead. EAAs ...essential amino acids are 99% absorbable within 20 minutes of you taking them and 2 to 4 calories a scoop. Protein powders take 4-6 hours to metabolize and they are only 20% absorbable...so your 20g packet only gets you 4g of protein instead of all of the aminos. Huma pro is good as is fortagen