If you or someone you love is exploring alternative cancer treatments, you might have heard about Vitamin B17 (also called Laetrile or Amygdalin).
The idea of a “natural” cure sounds hopeful — but does it really work?
Today, let’s dive deep into the truth of Vitamin B17, Laetrile therapy, and whether it truly has a place in cancer treatment.
What is Vitamin B17 (Laetrile/Amygdalin)?
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Amygdalin is a naturally occurring substance found in the seeds of fruits like apricots, peaches, and bitter almonds.
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Laetrile is the semi-synthetic form of Amygdalin, often marketed as Vitamin B17 — although it’s not officially recognized as a vitamin.
People have been attracted to it because some early studies (mostly in the 1950s–1970s) suggested it might fight cancer.
The Theory Behind Vitamin B17 & Cancer
Proponents believe that when Amygdalin breaks down in the body, it releases cyanide, a toxic chemical.
The theory is that:
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Cyanide selectively kills cancer cells while leaving normal cells unharmed.
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Boosts the immune system, helping the body fight cancer naturally.
This led to a wave of interest in cancer treatment with Vitamin B17.
But theories don’t always match real scientific results.
Quick Facts: Laetrile and Cancer in Numbers
Laetrile was banned by the FDA in the U.S. in 1977.
Clinical trials have shown no significant cancer-fighting effect of Laetrile.
Many reported serious side effects from cyanide poisoning in users.
No major medical body recognizes Laetrile as an effective cancer therapy.
Scientific Research on Laetrile: The Truth
Extensive research has been done to find the truth of Laetrile:
| Study/Organization | Findings |
|---|---|
| National Cancer Institute (NCI) | Found no evidence of effectiveness against cancer |
| Mayo Clinic Clinical Trial | No beneficial effect; significant side effects observed |
| FDA | Declared Laetrile illegal and unsafe for use |
Despite the claims, scientific evidence does not support that Laetrile can treat or cure cancer.
Side Effects of Amygdalin/Laetrile
Taking Amygdalin or Laetrile, especially orally, can cause cyanide poisoning, leading to:
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Nausea and vomiting
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Headaches
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Dizziness
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Liver damage
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Low blood pressure
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Death (in extreme cases)
These serious risks show that the supposed cancer treatment with vitamin comes at a dangerous price.
Why People Still Believe in Vitamin B17
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Desperation: When facing a life-threatening diagnosis, people seek hope anywhere.
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Natural Appeal: Many prefer “natural” over “chemical” treatments.
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Misinformation: Online platforms often promote Amygdalin myths without scientific proof.
It’s crucial to remember that “natural” doesn’t always mean safe — arsenic and cyanide are also natural but deadly.
Current Medical View on Laetrile
Major health organizations such as:
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The American Cancer Society
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The National Cancer Institute
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The World Health Organization (WHO)
…all state clearly:
Laetrile has not been proven safe or effective in treating cancer.
Instead, they recommend evidence-based treatments like chemotherapy, radiation therapy, targeted therapies, and immunotherapy — often tailored to the cancer’s stage and type.
How Should You Approach Alternative Therapies?
If you’re considering any alternative cancer treatments, always:
Discuss it first with your oncologist
Check if the therapy is backed by solid clinical research
Be wary of products claiming “miracle cures” without evidence
Focus on therapies that complement (not replace) proven treatments
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