Background: A synbiotic dietary supplement Renadyl™, which is being used by over 3000 CKD customers, was studied in a customer survey. The focus was health status and Quality of Life (QoL). Methods: Survey questionnaires were sent to 951 current repeat customers of Kibow Biotech Inc. Of those, 117 were excluded due to mailing errors and other reasons. The final sample size was 834. Results were tabulated and analysed using Statistical Analysis Software (SAS) V9.2 and Microsoft MS Excel. Results: A total of 168 responses were received (20% response rate, 42% female, 47% male, ages 12-98 years). A majority (85%) were over 51 years of age, in stage III or IV of kidney disease (58%) with at least one comorbid condition (77%), and almost half (48%) were retired. A majority (61%) reported experiencing at least some or even great improvement since they started taking Renadyl™. Statistical analysis indicated a significant difference (p<0.0001) in distributions in quality of life when comparing responses before and after taking Renadyl. Multivariate analysis indicated that the duration of Renadyl™ administration (p<0.0001), employment (p<0.012), comorbidity (p<0.012), and Glomerular Filtration Rate (GFR) (p<0.0015) were significant factors influencing the reported quality of life. Even the disabled respondents all reported significant improvement. Conclusions: Renadyl™ appears to provide at least some benefit in all stages of CKD and with a variety of comorbid conditions. It does not interfere with any other medical treatments, including dialysis. It appears to have a stabilizing effect on the overall health status and quality of life, maintaining or improving kidney health in particular. These findings reinforce the results of our 2013 survey and highlight the possible potential of modulating the gut microbiome with specifically chosen combination of probiotic strains and prebiotics. Further adequately powered studies that could establish a clearer correlation between Renadyl™ and its impact on GFR are warranted.