fd026161_in_Pros___Cons_at_sustevol_com__Cons
[Protein Source] Milk Protein [Pros] Low cost, good amino acid profile [Where Found] Skim Milk [Cons] 
Contains lactose; can cause bloating & gas, some prefer a higher amount of whey, basing that belief somewhat on the ratio contained in human milk (over time, about equal amounts of casein and whey)
Protein Pros & Cons at sustevol.com
Cons