Phd nutrition growth factor mass is a high quality all in one mass gainer it contains high quality protein and other high quality ingredients to help you hit the goals yoursquore wantingr phd nutrition growth factor mass can be taken to help increase levels of mass it contains 555 calories which is beneficial for anyone on a high calorie dietr it can be taken as a post workout shake or in the morning as mealr phd nutrition growth factor mass contains 57g of protein this is a must for any