# Vitamin D as a Therapeutic Adjunct in the Stimulant Treatment of ADHD: a Proof-of-concept Tele-health Study of Stimulant-induced Improvement in Neurocognitive Functioning.

> **NCT04386811** · PHASE1 · TERMINATED · sponsor: **Yale University** · enrollment: 3 (actual)

## Conditions studied

- ADHD

## Interventions

- **DRUG:** Calcitriol
- **OTHER:** Placebo

## Key facts

- **NCT ID:** NCT04386811
- **Lead sponsor:** Yale University
- **Sponsor class:** OTHER
- **Phase:** PHASE1
- **Study type:** INTERVENTIONAL
- **Status:** TERMINATED
- **Start date:** 2020-08-05
- **Primary completion:** 2020-09-29
- **Final completion:** 2020-09-29
- **Target enrollment:** 3 (ACTUAL)
- **Why stopped:** Following Yale University resuming in-person research activities, the investigators no longer had dedicated funding for the study and were unable to secure additional funding to meet the research goals.
- **Last updated:** 2024-02-07


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04386811

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04386811, "Vitamin D as a Therapeutic Adjunct in the Stimulant Treatment of ADHD: a Proof-of-concept Tele-health Study of Stimulant-induced Improvement in Neurocognitive Functioning.". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT04386811. Licensed CC0.

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