The recommended dose is 5g per day. You can front-load creatine if you are deficient, but taking over 5g daily won’t do much.
Edit: it’s 5g, not mg.
Edit: it’s 5g, not mg.
If you are taking weight lifting doses for cognitive effects, you are effectively 'doing it wrong' and will notice a significant weight gain from the extra water retention.
It's most popular in sports training and adjacent aesthetics, and the norm among that community is in grams. While most products are available as powders that you could perhaps measure out in milligrams, their reference dosage for advertising is usually 5g.