But despite a seemingly rapid increase in weight, creatine will not make you fat. You have to consume more calories than you expend to gain fat. One scoop of creatine per day (about 5 grams) doesn't have any calories, or at the very least, only a few calories.

Does creatine make you gain weight if you don't workout?

Some people think that if they take creatine and don't work out, they'll put on fat—but Roussell says it isn't true. "Creatine contains no calories, and has no impact on your fat metabolism," he says. "So taking creatine and not working out is just going to lead to nothing."

Does pre workout with creatine make you gain weight?

May increase water retention

While it's most often part of a pre-workout supplement, creatine can also be taken on its own. The main side effects associated with creatine are fairly mild but include water retention, bloating, weight gain, and digestive issues.