Protein

Protein is a consumable item which can be purchased from shops of each region's League. It can be fed to a pokemon to increase the amount of attack that pokemon gains by 1 per protein per hatch. Each pokemon can consume a total of 5 proteins per unlocked region.

How to Use
Go to Start Menu > Items > Item Bag, select the protein and select a pokemon to use it on. Once used the effect stays permanently and does not get removed by any means.

New Efficiency
Below is a list of the most efficient pokemon to breed after they have been fed the max amount of proteins for that region unlock.