CBD under the microscope: can it slow breast cancer growth?

NCT ID NCT06148038

Recruiting now Knowledge-focused Sponsor: Medical University of South Carolina Source: ClinicalTrials.gov ↗

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This early-stage trial is testing whether cannabidiol (CBD), a compound from cannabis, can affect breast cancer cell growth. Up to 84 women with invasive breast cancer will take either a low or high dose of CBD or a placebo for 5 to 56 days before their surgery. Researchers will then examine the removed tumors to see if CBD caused any changes in cell growth or death. The goal is to gather information, not to treat the cancer.

What this could mean

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

Active substance: cannabidiol (CBD) oral
What this could lead to: If it works, this could point toward CBD as a potential addition to breast cancer treatment.
What could go wrong: This is a very early phase 1 trial with only 84 people. It is designed to see if CBD affects tumor cells, not to prove it treats cancer. Results may not lead to a new treatment.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

breast cancer breast neoplasm invasive breast carcinoma

As listed by the trial registrant

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

BREAST CANCER

Contacts and locations

Locations

Medical University of South Carolina
RECRUITING

Charleston, South Carolina, 29425, United States

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