CBD oil put to the test for breast cancer joint pain

NCT ID NCT06787118

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This phase 3 trial tests whether CBD oil can reduce joint pain caused by aromatase inhibitors, a common hormone therapy for early breast cancer. About 130 participants will receive either CBD or a placebo for 12 weeks, then switch treatments. The study measures pain interference and joint stiffness to see if CBD offers real relief.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance

CBD oil (cannabidiol oral solution)

What this could lead to

If it works, this could provide a new, non-addictive option to ease joint pain for breast cancer patients on hormone therapy, improving their quality of life.

What could go wrong

This is a single-center study with only 130 participants, so results may not apply to everyone. CBD may cause side effects like drowsiness or liver issues, and the placebo effect could be strong for pain relief.

Disclaimer Read more

This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Conditions

The condition(s) this trial relates to.

breast cancer breast neoplasm estrogen-receptor positive breast cancer hormone receptor-positive breast cancer

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • Gustave Roussy

    Villejuif, 94805, France

    Contact Phone: •••-•••-•••• Email: •••••@•••••