Written from the studies on PubMed, searched on 11 Nov 2026. Every number below comes from a study listed under Sources.
The claim
Posts online say that CBD (cannabidiol) helps with glioblastoma.
Where research stands
We found 31 published papers on CBD (cannabidiol) and glioblastoma. They were published between 2010 and 2026. None of them is a study in people. 7 were studies in animals, and 15 were only in cells in the lab. 2 papers are reviews that sum up other studies. 1 paper was retracted.
- 0In people
- 7In animals
- 15Only in the lab
What the studies found
We have not summed up these studies in words yet. The most important papers are listed under Sources.
Verdict
CBD (cannabidiol) has been studied for glioblastoma in animals, not yet in people.
Unproven means: it was only tested in animals or cells, or there is too little or mixed data from people. How we rate claims
What this means for you: Results in animals or in cells often do not hold in people. Do not stop or change your medicines because of it. Ask your doctor before you start taking it.
Sources
- Cannabidiol in Gliomas: Therapeutic Potential and Nanocarrier Strategies, with an Emphasis on Vesicular Delivery Systems.2026 · Mol Pharm · Review
- Concomitant Treatment of Malignant Brain Tumours With CBD - A Case Series and Review of the Literature.2019 · Anticancer Res · Review
- Exploring the antidepressant-like effects of cannabidiol and/or temozolomide in female mice with induced glioblastoma.2026 · Neuroscience · In animals
- Cannabidiol as a Prophylactic Agent Against Glioblastoma Growth: A Preclinical Investigation.2026 · Int J Mol Sci · In animals
- The Anti-Glioblastoma Effects of Novel Liposomal Formulations Loaded with Cannabidiol, Celecoxib, and 2,5-Dimethylcelecoxib.2025 · Pharmaceutics · In animals
- Isobolographic interactions of cannabidiol and AM 1172 with cisplatin in human neuroblastoma and glioblastoma cell lines: An in vitro study.2025 · Chem Biol Interact · In animals
- Cannabidiol and fluorinated derivative anti-cancer properties against glioblastoma multiforme cell lines, and synergy with imidazotetrazine agents.2024 · BJC Rep · In animals
- Inhalant Cannabidiol Inhibits Glioblastoma Progression Through Regulation of Tumor Microenvironment.2023 · Cannabis Cannabinoid Res · In animals
- Synergistic effects of Temozolomide and Cannabidiol on the Wnt/β-Catenin Signaling Pathway in Glioblastoma.2026 · Int J Mol Cell Med · In the lab
- From Screening to a Nanotechnological Platform: Cannabidiol-Chemotherapy Co-Loaded Lipid Nanocapsules for Glioblastoma Multiforme Treatment.2025 · Pharmaceutics · In the lab
- Synergistic combination of cannabidiol and celecoxib or 2,5-dimethylcelecoxib exerts oxidative stress-mediated cytotoxicity and mitigates glioblastoma invasiveness.2025 · Acta Biochim Pol · In the lab
- Altering biomolecular condensates as a potential mechanism that mediates cannabidiol effect on glioblastoma.2024 · Med Oncol · In the lab
- Inhibition of autophagic flux differently modulates cannabidiol-induced death in 2D and 3D glioblastoma cell cultures.2020 · Sci Rep · RetractedRetracted
- Retraction Note: Inhibition of autophagic flux differently modulates cannabidiol-induced death in 2D and 3D glioblastoma cell cultures.2024 · Sci Rep · Other paper
- Cannabidiol Μay Prolong Survival in Patients With Glioblastoma Multiforme.2021 · Cancer Diagn Progn · Other paper
- Author Correction: Inhibition of autophagic flux differently modulates cannabidiol-induced death in 2D and 3D glioblastoma cell cultures.2021 · Sci Rep · Other paper
- Correction: Inhibition of ATM kinase upregulates levels of cell death induced by cannabidiol and γ-irradiation in human glioblastoma cells.2019 · Oncotarget · Other paper
