Whenever you find it easiest to take creatine is probably good enough. There's not a lot of research indicating that taking it at one particular time is significantly better than any other.
Just take 3-5 grams per day whenever works for you.
When you first start taking creatine, it's easy just to take 3-5 grams a day and within two weeks you will be saturated with your optimal body's needs. Then continue to take daily to enjoy the benefits of more energy and ability to push a little more to realize those gains!
