There is no single amount of extra water that everyone must drink because they take creatine. PÛR provides 5 g of creatine monohydrate per packet. Mix it into water or another beverage and follow the directions and precautions on the package.
Start with your usual hydration needs
Your fluid needs vary with body size, activity, heat, and health. Creatine can increase water retained in muscle, but that does not establish a special gallon-per-day target for every person. Keep a drink available during exercise and pay attention to normal signs that you need fluids.
When to ask for individual guidance
If a clinician has told you to restrict fluids, or you have a kidney or other medical condition, ask them before changing your supplement or hydration routine.
For background on creatine, typical serving amounts, and known effects, see the NIH Office of Dietary Supplements review.