Preliminary Efficacy and Safety of Reishi & Privet Formula on Quality of Life Among Non–Small Cell Lung Cancer Patients Undergoing Chemotherapy: A Randomized Placebo-Controlled Trial

BACKGROUND: Cancer patients often experience decreased quality of life during chemotherapy. This study aimed to determine the preliminary efficacy and safety of Reishi & Privet Formula (RPF) for maintaining quality of life among patients with non–small cell lung cancer (NSCLC) undergoing chemotherapy. METHODS: We conducted a phase II randomized, double-blind, placebo-controlled clinical trial in China. Adults with NSCLC scheduled to receive chemotherapy were randomly assigned (3:1 ratio) to receive oral RPF (3.36 g/day) or placebo daily for 6 weeks. The main outcome was the Functional Assessment of Cancer Therapy–Lung (FACT-L). We evaluated RPF’s safety profile using the Common Terminology Criteria for Adverse Events and assessed changes in outcome measures from baseline to weeks 3 and 6 using a linear mixed effects model. RESULTS: We enrolled 82 participants across 8 cancer centers in China. The median age was 59 years, 56 (68%) had advanced cancer. Compared with the placebo group, the RPF group had nonstatistically significant higher quality of life as measured by the FACT-L total score (P = .086) over 2 cycles of chemotherapy. The RPF group was associated with a nonsignificant better general health (P = .050) and emotional well-being (P = .090) than the placebo group. Adverse events rates did not differ between groups. CONCLUSIONS: This study demonstrated preliminary safety and suggests a promising trend in RPF’s effect on maintaining quality of life and emotional well-being among NSCLC patients undergoing chemotherapy. Future adequately powered randomized-controlled trials are needed to verify the efficacy and safety of RPF in cancer patients undergoing chemotherapy.