Vitamin D and Painful Diabetic Neuropathy

Painful diabetic neuropathy (PDN) is the most common diabetic complication in patients who have had diabetes mellitus for a long time. Diabetic peripheral neuropathy is the common cause of neuropathy globally. About 50-60% of individuals with long-term diabetes develop diabetic neuropathy. Several recent observational studies in diabetic individuals have provided a correlation between vitamin D insufficiency and diabetes. Despite the fact that the pathogenesis of diabetic neuropathy is complex, recent investigations revealed that deficiency of vitamin D is an important factor in the development of diabetic neuropathy. Also, vitamin D supplementation was found to be effective in treating neuropathic pain and preventing neuronal degeneration. Aims and Objectives: The assessment of the effect of single-dose, oral vitamin D in patients with painful diabetic neuropathy. Materials and Methods: Study Drug: Oral cholecalciferol (Vitamin D3 capsule 200,000 IU). A single oral dose of 200000 IU vitamin D will be administered in people with diabetic neuropathy, and the effect will be observed after 3 months. * Sample size = 216 type 1 and 2 diabetic subjects * Recruitment time = 4 months * Treatment duration = 3 months Ethical Approval: The ethical approval for this study will be taken from the Institutional Review Board (IRB) of Baqai Institute of Diabetology and Endocrinology (BIDE) Study Area and Duration: This study is going to be conducted from October 2021 to March 2022 in the outpatient department (OPD) of BIDE. Data Analysis and Statistics: The primary analysis will compare the change from baseline. Comparisons within each treatment group across time will also be considered. The analysis will be performed with the Statistical Package for the Social Sciences (SPSS). Assessment during the Treatment Period: * Change from baseline in DN4 * Change from baseline in serum 25 (OH) D, * Change from baseline in HbA1c