Would drinking a whey protein shake and taking a b-12 vitamin help promote better metabolism for weight loss?

Why, not whey: Why are you taking whey protein? What is the problem you think you have and what do you think whey protein is going to do to improve it? How are you going to measure that improvement? Eating extra calories can't help weight loss, no matter what it is. Save your money. Don't get your medical inforation from friends, tv and the internet.