A lot of sites recommended you need up to 10g a day, but you'll find that they're likely to be backed by supplement companies. They obviously want you necking the stuff.

Fact is, there’s no benefit to taking that much. Your muscles can only store so much creatine and chucking in more than they can hold is just wasting it.

The most current research indicates that you should load up with 20g a day for five days, taken in four 5g doses. After that you only need around 2½g daily (about ½ teaspoon) to keep the muscles fully saturated.

If you’ve already been taking 10g per day over a fortnight you'll have already reached the same point of saturation. So switch to 2½g daily.

The loading is not something you need to do either, it’s just a quicker way of getting to that point.