Monocentric, double-blind, randomized, placebo-controlled, interventional pilot study to investigate the beneficial effects of high dose vitamin D supplementation on gut and lung microbiota in patients with cystic fibrosis who are vitamin D insufficient.
The objective of this study is to assess the effects of a high-dose vitamin D3 on the composition of gut and lung microbiota in adolescents and adults with cystic fibrosis who are vitamin D deficient.