# Vitamin D in OUD: Exploration of Alterations on the Dopamine D2/D3 Receptor System

> **NCT06261905** · PHASE1 · COMPLETED · sponsor: **Yale University** · enrollment: 5 (actual)

## Conditions studied

- Opioid Use Disorder

## Interventions

- **DRUG:** [11C]-PHNO
- **DIETARY_SUPPLEMENT:** Calcitriol
- **OTHER:** Placebo Control
- **PROCEDURE:** PET Scan

## Key facts

- **NCT ID:** NCT06261905
- **Lead sponsor:** Yale University
- **Sponsor class:** OTHER
- **Phase:** PHASE1
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2024-03-13
- **Primary completion:** 2025-02-18
- **Final completion:** 2025-02-18
- **Target enrollment:** 5 (ACTUAL)
- **Last updated:** 2025-11-14

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT06261905

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT06261905, "Vitamin D in OUD: Exploration of Alterations on the Dopamine D2/D3 Receptor System". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT06261905. Licensed CC0.

---

*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*