Could vitamin d help stop bedwetting? new study tests the idea

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria * Children aged 5-18 years diagnosed with PMNE-defined as intermittent urinary incontinence during sleep in a children who are never dry for more than 6 months and have no other lower urinary tract symptoms-according to the latest International Children's Continence Society guidelines, presenting at outpatient urology clinics. * Serum vitamin D level below 30 ng/mL. * Written informed consent obtained from each participant and their guardian. * Adequate psychological and cognitive function, no communication barriers, and ability to accurately report symptoms and potential adverse reactions during treatment. Exclusion Criteria * Urological malformations or serious urological disease, such as hypospadias, cryptorchidism, posterior urethral valves, vesicoureteral reflux, neurogenic bladder, urinary tumors, urinary stones, or bladder/urethral injuries. * Neurological disorders, including epilepsy, spinal cord injury or dysplasia, spinal embolism syndrome, multiple sclerosis, autism spectrum disorder, or attention-deficit/hyperactivity disorder. * Endocrine diseases, such as diabetes mellitus or hyperthyroidism. * Severe systemic disease, including significant cardiac disease, renal or hepatic insufficiency, pulmonary disease, bone deformities, gastrointestinal disorders, or inherited metabolic disorders. * Conditions predisposing to sleep apnea, such as adenoid or tonsillar hypertrophy, deviated nasal septum, craniofacial abnormalities, or central sleep apnea. * History of gastrointestinal or urological surgery. * Use of anticonvulsant, antiepileptic, corticosteroid, or anti-tuberculosis medications. * History of hypercalcemia, hyperphosphatemia, or renal rickets. * Unexplained hematuria or urinary tract infection within the past year. * Allergy to vitamin D formulations. * Concurrent participation in other clinical studies. * Unwillingness to participate or poor anticipated follow-up compliance.