Creatine may help cancer survivors rebuild or maintain lean body mass, especially when paired with resistance training, according to OSF HealthCare oncology dietitian Gabrielle Raucci.
3-5 grams a day is the typical adult dose, and Raucci said creatine monohydrate powder is the best-studied form and is generally better absorbed than capsules or gummies.
Active chemotherapy or immunotherapy changes the risk calculation because creatine breaks down into creatinine, which could complicate kidney monitoring when those treatments already can strain renal function.
Recent studies also point to possible brain-energy and cognitive benefits, but Raucci said patients should clear any supplement use with their oncology team based on treatment stage, medications and overall health.