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Individual therapies

Laetrile (amygdalin or vitamin B17)

Go to the cancer types section for information about treatment for your type of cancer

Laetrile is promoted as an alternative cancer treatment. There is not enough reliable evidence that it works.

Summary

  • Laetrile is a man-made form of amygdalin, a plant substance found in some nuts, plants and seeds of fruit.

  • Claims that laetrile or amygdalin can treat cancer are not backed up by research.

  • It contains cyanide, a poison and can cause serious side effects.

A word of caution

It is understandable that you might want to try anything if you think it might help treat or cure your cancer. Only you can decide whether to use an alternative cancer therapy such as laetrile.

You could harm your health if you stop your cancer treatment for an unproven treatment.

Many websites promote laetrile as a cure for cancer. But no reputable scientific cancer organisations support any of these claims. Be cautious about believing this type of information or paying for any alternative cancer therapy over the internet.

Safety of complementary and alternative therapies

Last reviewed: 27 Sept 2022

Next review due: 27 Sept 2025

Individual therapies

Find detailed information and research into some of the many different complementary and alternative therapies used by people with cancer.

About complementary and alternative therapies

A complementary therapy means you can use it alongside your conventional medical treatment. It may help you to feel better and cope better with your cancer and treatment. An alternative therapy is generally used instead of conventional medical treatment.

Safety of these therapies

This section has information about the safety of complementary cancer therapies and alternative cancer therapies.

Resources and organisations

Find organisations, support groups, books, websites and other resources about complementary and alternative therapies.

Cancer treatments

Treatments can include surgery, radiotherapy and drug treatments (such as chemotherapy, hormone therapy or targeted cancer drugs). Find out about treatments and how to cope with side effects.

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