This trial is terminated!
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Your journey
1What's a trial
4Get in touch
More info
You can access this
clinical trial
if you have
Chronic Obstructive Pulmonary Disease or Muscle Weakness
and you are
over 50
years old
This is a second phase trial assessing
efficacy and side effects of the new treatment.
Show me locations

The purpose

This phase IIb randomized trial studies how well cholecalciferol (vitamin D3) supplementation works in strengthening inspiratory muscles in cholecalciferol-deficient patients with chronic obstructive pulmonary disease (COPD). Cholecalciferol supplementation may help reduce the risk of developing lung cancer and strengthen the diaphragm in cholecalciferol-deficient patients with COPD.

Provided treatments

  • : Cholecalciferol
  • Other: Laboratory Biomarker Analysis
  • : Multivitamin
  • Other: Placebo
  • Other: Questionnaire Administration

Locations near you

Unfortunately, there are no recruiting locations near you. Please check the list with all locations below.
Tris trial is registered with FDA with number: NCT02877641. The sponsor of the trial is Roswell Park Cancer Institute and it is looking for 4 volunteers for the current phase.
Official trial title:
Effect of Once Daily Oral Vitamin D3 Supplementation on Inspiratory Muscle Strength in Vitamin D3-Deficient COPD Patients