Creatine is a well-research substance, and the strength/power output benefits are well known. After the initial loading period, you might feel discouraged looking at your scale, but it's all just water, don't worry.
It improves energy and concentration when exercising and helps to increase muscle strength and reduce muscle fatigue.
To achieve best performance, it is recommended to take 4 times per a day with recommended 1 serving size each for the first 7 days.
After 1 week, it is recommended to take 1 time per day before or after exercise.