[Therapeutic effect of vitamin D supplementation in mexican patients with allergic rhinitis].

Objetives: To evaluate the impact of cholecalciferol (D₃) supplementation using clinical and paraclinical variables in patients with RA and vitamin D insufficiency and deficiency.

Methods: A randomized, double-blind, placebo-controlled study included patients from 5 to 40 years with a diagnosis of RA and vitamin D insufficiency and deficiency. They were supplemented for 8 weeks with 4000 or 5000 IU, depending on age. Total nasal symptoms score (TNSS) was measured monthly and 25(OH)D₃ levels at baseline and at the end of the study.

Results: A total of 31 patients were included, with a mean age of 18.19 years. In the active group, there was a significant improvement in symptomatology with respect to the TNSS score and an increase in serum vitamin D levels (p < 0.01). There were no adverse reactions with cholecalciferol or placebo.

Conclusions: Supplementing patients with vitamin D₃, at the evaluated dose, together with conventional treatent for allergic rhinitis results in symptoms and quality of life improvement in patients with this disease.