# Vitamin D Supplementation and Male Infertility: The CBG-study a Randomized Clinical Trial

> **NCT01304927** · PHASE2,PHASE3 · COMPLETED · sponsor: **Rigshospitalet, Denmark** · enrollment: 307 (actual)

## Conditions studied

- Male Infertility

## Interventions

- **DRUG:** Cholecalciferol and calcium
- **OTHER:** Placebo

## Key facts

- **NCT ID:** NCT01304927
- **Lead sponsor:** Rigshospitalet, Denmark
- **Sponsor class:** OTHER
- **Phase:** PHASE2,PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2011-02
- **Primary completion:** 2014-12
- **Final completion:** 2016-05
- **Target enrollment:** 307 (ACTUAL)
- **Last updated:** 2016-06-08


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01304927

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01304927, "Vitamin D Supplementation and Male Infertility: The CBG-study a Randomized Clinical Trial". Retrieved via AI Analytics 2026-06-24 from https://api.ai-analytics.org/clinical/NCT01304927. Licensed CC0.

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