28 days of creatine nitrate supplementation is apparently safe in healthy individuals.

J Int Soc Sports Nutr · 2014 · PMC4293808 · PMID 25589898

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did not reach statistical significanceno p-value reported

BUN and BUN:creatinine increased beyond the clinical reference range for the 2 g treatment of Lab 2, but BUN did not reach statistical significance.

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