Abstract
For cancer patients undergoing radiation therapy (RT) or systemic chemotherapy (CHT), cancer-related fatigue (CRF) is a common problem that can negatively impact their quality of life. Guarana (Paullinia cupana) is a plant native to the Amazon basin that has been used as a stimulant since pre-Columbian times. PURPOSE: To evaluate the effectiveness of guarana extract on fatigue in BC patients undergoing either CHT or RT. A total of 137 cancer patients (85% with Breast Cancer) undergoing either CHT (101) or RT (36) were randomized to receive either a placebo or guarana. In all 3 studies, the guarana was given as an unmanipulated dry extract at a dose of 75 mg PO QD in the first two studies or 50 mg PO BID in the third study. Patients were crossed over to the other experimental arm, and we evaluated fatigue with the Chalder Scale in all three studies. Guarana significantly improved the The Chalder Scale Global Scores (- 0.85; 95% CI:-1.31 to -0.40; p = 0.0002); Physical Fatigue Scores (-0.44; 95% CI: - 0.74 to - 0.13; p = 0.005) and Mental Fatigue Scores (-0.93; 95% CI: - 1.14 to - 0.72; p < 0.00001). Guarana did not produce any CTCAE grades 3 or 4 toxicities in any of the studies. Guarana is an effective, cheap and non-toxic alternative for the treatment of fatigue in cancer patients undergoing treatment.
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