Comparing Zoledronic Acid with and without Vitamin D for Osteoporosis

Examination of Bone Metabolism and Bone Mineral Density by Zoledronic Acid in Primary and Secondary Osteoporosis

Phase 2 Interventional Shinshu University · NCT03183557

This study tests if adding vitamin D to Zoledronic acid can help people with osteoporosis improve their bone health better than just using Zoledronic acid alone.

Quick facts

PhasePhase 2
Study typeInterventional
Enrollment100 (estimated)
Ages20 Years and up
SexAll
SponsorShinshu University Academic / other
Locations1 site (Matsumoto, Nagano)
Trial IDNCT03183557 on ClinicalTrials.gov

What this trial studies

This clinical trial aims to evaluate the efficacy of Zoledronic acid alone versus Zoledronic acid combined with active vitamin D in patients with primary and secondary osteoporosis. The study will involve osteoporotic patients who are interested in receiving treatment with Zoledronic acid. By comparing these two treatment approaches, the trial seeks to determine if the addition of vitamin D enhances the effectiveness of Zoledronic acid in improving bone health. The trial is designed as a Phase 2 interventional study.

Who should consider this trial

Good fit: Ideal candidates for this study are osteoporotic patients who are willing to take Zoledronic acid.

Not a fit: Patients who are allergic to Zoledronic acid or vitamin D, pregnant or breastfeeding, or who have not taken Zoledronic acid in the last two years may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide a more effective treatment option for patients with osteoporosis.

How similar studies have performed: There is limited comparative data available on the efficacy of Zoledronic acid combined with active vitamin D, making this approach relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Osteoporotic patients who want to take zoledronic acid

Exclusion Criteria:

* Patients who are allergic to zoledronic acid or vitamin D
* Patients who are pregnant or breast-feeding
* Patients who have not taken zoledronic acid for the last 2 years

Where this trial is running

Matsumoto, Nagano

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Osteoporosis
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.