Does creatine raise blood pressure?
Last updated September 3, 2026.
Current evidence does not show creatine raising blood pressure: studies measuring resting pressure and arterial stiffness during supplementation, even at 21 g/day loading, found no significant changes in healthy people. The water-retention logic sounds scary but does not translate: the fluid creatine draws goes into muscle cells, not the vascular squeezing that drives pressure. It is among the most studied supplements in existence, and hypertension is not among its documented harms. The genuine caveats are elsewhere: existing kidney disease makes it a doctor conversation; creatine bumps creatinine on kidney blood tests, which can masquerade as kidney decline unless the clinician knows you supplement; and early scale gains of a kilogram or two are water in muscle, not a pressure problem. Third-party-tested brands matter as with any supplement. If you already have hypertension and want certainty for your own case, take home readings for two weeks after starting; your own log beats general reassurance.
What to do
- Healthy users: no demonstrated BP effect at standard doses.
- Kidney disease? Ask your doctor before supplementing.
- Tell the lab: creatine raises creatinine readings without kidney damage.
- Early weight gain is water: intramuscular, not pressure.
- Want certainty? Two weeks of home readings after starting answers it for you.
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