Efficacy of Ayurveda Regimen as an Adjunct to Hydroxyurea in Sickle Cell Disease: Protocol for a Prospective, Randomized, Open-Label, Blinded End Point Exploratory Study.

Background: Sickle cell disease (SCD) is a severe, inherited hemoglobin disorder characterized by chronic hemolysis, vaso-occlusive crises (VOCs), and systemic inflammation. Hydroxyurea is the standard conventional pharmacotherapy for SCD, but it has certain limitations, necessitating the need to explore other safe and effective treatment options for SCD. Ayurveda interventions offer a potential therapeutic approach complementary to conventional medicine for SCD management, with anti-inflammatory, immunomodulatory, and hematopoietic properties. Objective: This randomized controlled trial will evaluate the efficacy and safety of an Ayurvedic therapeutic regimen as an adjunct to hydroxyurea in SCD management, assessing its impact on hematological parameters, inflammatory biomarkers, VOC frequency, and overall quality of life. Methods: A PROBE (Prospective, Randomized, Open-Label, Blinded End Point) study will be conducted on individuals of any gender aged 18 years or older and diagnosed with SCD (with hemoglobin S levels more than 60% and a history of at least 1 VOC per year over the past 3 y). Individuals with acute VOC or any severe infection requiring hospitalization, a history of significant comorbidities, or hematopoietic stem cell transplantation will not be considered. The study will be conducted at the All India Institute of Medical Sciences, Bhopal, India. A total of 100 participants will undergo random assignment in a 1:1 ratio to receive either an Ayurveda regimen (Dadimadi Ghrita, Punarnavadi Mandura, and Vasaguduchyadi Kwatha) as an add-on to hydroxyurea or hydroxyurea alone for 8 months. The primary outcome will be a change in hemoglobin electrophoresis parameters (hemoglobin S, fetal hemoglobin, and adult hemoglobin) and the frequency of VOC episodes over 8 months. The secondary outcome measures include changes in the levels of proinflammatory markers (interleukin-6, interleukin-8, C-reactive protein, and transforming growth factor-β) and lactate dehydrogenase, frequency of hospitalization for VOCs and blood transfusions, and health-related quality of life (Short Form-8 Health Survey questionnaire). Safety will be evaluated by recording the incidence of adverse events and changes in liver and kidney function tests from baseline. Results: The recruitment of study participants was initiated on November 1, 2023. By the second week of February 2025, 83 participants had been enrolled in the study. The final study is expected to be complete by December 31, 2025. We will start the analysis of the study outcomes in February 2026, and the publication of the final results is expected by August 2026. Conclusions: This randomized controlled trial protocol outlines a rigorous study design aimed to explore the potential benefits of an integrated therapeutic regimen comprising Ayurveda interventions and standard conventional care in the long-term management of SCD through validated clinical and laboratory parameters. The outcomes of this study can address the needs and challenges associated with SCD management and inform future management protocols.