Most supplements do sweet FA (from a science perspective) when it comes to strength and mass.
Consuming whey as you do is just another way of getting food down your neck.
There are very few that will actually do anything effective on a physiological level over an appropriate diet: creating is one, and caffeine is another.
Creating loading works by storing more glycogen in muscle tissue, meaning you can go harder for longer, as such. And no, if it worked in bed, Pfizer would never have scored with Viagra.
Caffeine has a rather interesting effect on the brain's response to 'fatigue' hormones: it blocks prolactin receptors in the brain, meaning the user doesn't feel like they're getting as tired, as quickly. The last study I looked at showed something like a 30% increase in exercise duration (for cyclists) when jazzed on 300mg of the stuff.
There are other supplements that have comedy effects (nitric oxide supplements, for instance) like increasing 'the pump,' but do nothing from a gains perspective.
Other stuff like Jack3d contains pseudoephedrine, which is a bit like caffeine crossed with speed, and definitely has a marked effect as a result. However, it is also a substance banned by WADA.
Bottom line? Eat more, sleep more.
