Whey protein is the best; no unwanted side effects, and it gets you the protein you need. I recommend the chocolate flavor ;). Oh, and don't listen to the gym weenies who have it twice a day; once after the workout is enough provided you eat a balanced diet with sufficient protein.

I use XXX mass by GNC adn that works very well. I ahe been on for about 2weeks now and can alrady see an imrovement. Also make sure that u get on like a large multivitamin this will allow you other important thigs such as all your vitamins and fibers, proteins carbs,you name it between my Gnce men's multi vitamin and XXX mass by gnc I feel great and and look good too

I use protein supplements just to increase my protein intake as I'm usually in a rush all day.
If you training for a marathon or endurance event you should be looking at taking in 1.5 x you body weight in Kg for your muscle repair. I heard you could only take in roughly 40grams of protein in one sitting also.

As for creatine, it increases water retention in the muscles, making your muscles look bigger, but also helps in sustaining the number of reps you can put in.
The water also will lead to increased body weight, obviuosly if your running a marathon an extra 6 or 7 pounds is probaly going to have a deterimental effect.

If your starting a new exercise routine, changing training or coming back form a long injury I was also recommend L Glutamine as it can keep thus muscle aches to a minimal and is supposed to aid in muscle recovery.

Protein, vitamins, they are all welcomed when it comes to sports. It looks like you guys know exactly what you need to make this right. I still believe people are not well informed or educated about these sport nutritional supplements. We all could use some infos about [link deleted by admin].