Just some food for thought too. All companies that sell stuff in a bottle have one goal. Make money. Extra protein in a diet hasn't been proven to give you any extra edge unless you were already deficient. Your body will use protein based on need. If you follow the mantra of meat & fish, plenty of vegetables, some fruit, little starch, no sugar you should do fine.
"Permanence, perseverance and persistence in spite of all obstacles, discouragement, and impossibilities: It is this, that in all things distinguishes the strong soul from the weak”