The short answer
Antineoplastons are chemical compounds found in blood and urine. They are often promoted for brain tumors. The FDA has not approved them for any disease. NCI says no phase III randomized trials have been published in peer-reviewed journals, and serious side effects have been reported. Talk with your care team before making any treatment decision.
Antineoplastons are not approved by the FDA to prevent or treat any disease.
NCI says no phase III randomized controlled trials of antineoplastons for cancer have been published in peer-reviewed journals.
Most research has been done at the clinic where antineoplastons were first made.
Reported side effects include high blood pressure, irregular heartbeat, seizures, and brain swelling.
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The whole article, with every detail and caution.
The simple version
This page is for anyone who has heard that antineoplastons can cure cancer, often brain tumors. The FDA has not approved antineoplastons to prevent or treat any disease. NCI says the large studies needed to show whether they work have not been done.
Antineoplastons are unproven, and they can cause serious side effects.
What antineoplastons are
NCI explains that antineoplastons are chemical compounds found in urine and blood. They are made of amino acids and peptides, which are building blocks of proteins.
What the evidence shows
NCI says:
- No phase III randomized controlled trials of antineoplastons as a cancer treatment have been published in peer-reviewed journals.
- Most research has been done at the clinic where antineoplastons were first made. Few studies have been done elsewhere.
- In its last update, NCI found either no new research or research too weak to include.
Small studies and case reports can raise a question. They can't answer it. That takes larger trials that compare groups fairly, and those have not been done.
Side effects
NCI lists side effects that range from mild to severe, including:
- Anemia and abnormal calcium levels
- High blood pressure and irregular heartbeat
- Headache, nausea, and vomiting
- Seizures and brain swelling
NCI notes the most severe effects happened in a phase II trial in people with brain tumors.
Red flags to watch for
The FDA warns that fake cancer products often use phrases like "treats all forms of cancer," "selectively kills cancer cells," or "more effective than chemotherapy." It also warns that these products may cause harm by delaying or interfering with proven treatments.
Talk with your care team
A cancer diagnosis, especially a brain tumor, can make people search hard for hope. That is understandable. Your care team can walk you through proven treatments and clinical trials. A real clinical trial has a written plan, safety oversight, and informed consent. Our guide to what clinical trials are explains more.
Sources
- NCI, Antineoplastons (PDQ), Patient Version: https://www.cancer.gov/about-cancer/treatment/cam/patient/antineoplastons-pdq
- FDA, Products Claiming to "Cure" Cancer Are a Cruel Deception: https://www.fda.gov/consumers/consumer-updates/products-claiming-cure-cancer-are-cruel-deception
Common questions
Are antineoplastons FDA approved?
No. NCI says antineoplastons are not approved by the FDA for the prevention or treatment of any disease.
Why do people say they work?
Most reports come from phase I and II studies and case reports, mostly from the clinic where antineoplastons were first made. NCI notes that no phase III randomized controlled trials have been published in peer-reviewed journals. Those are the larger studies that compare a treatment with a standard one.
What side effects have been reported?
NCI lists anemia, abnormal calcium levels, high blood pressure, irregular heartbeat, headaches, nausea, vomiting, seizures, and brain swelling. The most severe effects were seen in a phase II trial in people with brain tumors.
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Sources last checked: 2026-09-27 what this meansLast updated: 2026-09-27Next planned review: 2027-03-27
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Cancer Explained does not originate medical claims. Every page restates guidance already published by the National Cancer Institute, the CDC, the USPSTF and the FDA, in plain language, with the source cited so you can check the original yourself. AI does the translating and organizing; automated checks test claims, citations, clarity and safety before anything publishes, and this is translation and navigation, not clinical judgment. Nothing here is personal medical advice, and no page can account for your particular situation.
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Cancer Explained does not originate medical claims. Every page restates guidance already published by the National Cancer Institute, the CDC, the USPSTF and the FDA, in plain language, with the source cited so you can check the original yourself. AI does the translating and organizing; automated checks test claims, citations, clarity and safety before anything publishes, and this is translation and navigation, not clinical judgment. Nothing here is personal medical advice, and no page can account for your particular situation.
Editorial status: Source checked — This page was written with AI assistance and then compared with the sources listed on it, looking for statements those sources do not back up. That check is not a sentence-by-sentence record and can miss errors. It is not a medical review, and it does not confirm the page is complete or right for your situation.
Human medical review: not completed. Pages here are not signed off by a clinician before they publish. That is not an oversight we are quietly working around: we restate published guidance and cite it, so the authority belongs to the source rather than to us, and every page names where its claims come from — you can verify us instead of trusting us. Where a volunteer clinician has reviewed a page, their name and credentials appear on it; where no name appears, no clinician has checked it. We are glad to have reviewers and are recruiting them, and we do not hold pages back waiting for one. Use this site to understand your situation and to ask better questions of the people treating you.
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