Patients and healthcare providers should understand three critical facts about creatine supplementation and kidney safety. First, elevated creatinine levels observed during creatine use represent normal metabolic processes, not kidney damage. When creatine supplementation increases total body stores, spontaneous degradation of muscle phosphocreatine (approximately 2 percent daily) produces proportionally more creatinine, which is filtered by healthy kidneys. Second, a landmark 26,000-participant safety review found zero evidence of kidney problems from creatine use. Third, all actual kidney health indicators—glomerular filtration rate, cystatin C levels, proteinuria, and albuminuria—remain completely normal during supplementation. These findings empower patients to make informed decisions about creatine use while reassuring healthcare providers that supplementation is safe for individuals with healthy kidney function.
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