Coincidentally, I read a portion of a study today about recent research from the University of New South Wales stating that "...taking 5 grams of creatine supplement per day does not make any difference to the amount of lean muscle mass people put on while resistance training."
Research from the study:
"54 healthy people between 18 and 50 through a 12-week resistance training program.
Those in the supplement group took 5 grams of creatine daily — the recommended maintenance dose is 3 to 5 grams.
Participants began creatine a week before starting the exercise program, which included three supervised resistance training sessions a week.
They didn’t do a creatine-loading phase, which involves taking 20 to 25 grams daily for up to a week to rapidly saturate muscle creatine stores.
The researchers said creatine loading isn’t necessary to reach saturation levels and can cause bloating or an upset stomach."
Personally, I thought creatine did add size to my tris and chest and helped with recovery after runs. I did not notice notable gains in lifting performance.