Laetrile / Vitamin B17/ /Apricot Kernels

“When administered to cancer patients, laetrile has proven to be quite free from any harmful side effects, and I would say that no anti-cancer drug could make a cancerous patient improve faster than laetrile. It goes without saying that laetrile controls cancer and is quite effective whenever it is located.” Dr. Shigeaki Sakai – a prominent Tokyo physician reports in Oct. 1963.

The history of Vitamin b17/ laetrile

Laetrile or Vitamin B 17 is a compound that can be found in bitter almonds (which are illegal in the US) as well as in the pits of apricots, peaches, and cherries, and in the seeds of apples, strawberries, and red or black raspberries.  Other foods that contain a small amount of laetrile are chick peas, lentils, Lima beans, cashews, brown rice, buckwheat, millet and wheatgrass.  Most modern day diets are lacking in the foods that contain a significant amount of the compound and supporters believe that the body requires some amount of this nutrient in order to prevent and heal from cancer.

The video and book World Without Cancer; The Story of Vitamin B17 tells about the early history of the compound and the interest that has surrounded it over the years.  Much of the controversy regarding it took place from the 1950’s  – 70’s, and it had even been tested a few times in a laboratory setting, but each time it had reportedly failed to show any promise for the treatment of  cancer.  But still, the public remained unconvinced, and in order to quell the demand once and for all, laetrile became the subject of a 5 year study at The Sloan-Kettering Cancer Institute from 1972-1977 and a second study in 1981.

The following information was shared by Ralph Moss in the documentary Second Opinion: Laetrile At Sloan-Kettering, which details the cover-up that he witnessed first-hand while serving as the Public Relations Director for Sloan-Kettering during the length of the study.  Ralph states that he was told by hospital administration that laetrile was not showing success during the early experimentation and that he should relay that information if anyone were to ask about the study.  A short while later, Ralph met with Kanematsu Sugiura, who was the senior scientist in charge of the testing so that he could get more details about the experiments.   To Ralph’s surprise, Sugiura’s experiments clearly showed that laetrile had significantly inhibited the growth of primary tumors, and more surprisingly, there was an 80% decrease in the appearance of lung metastasis in the mice with spontaneous mammary tumors compared to the control mice. Suriura stated,  “laetrile had provided the best effect against tumor metastasis that he had witnessed in his 60 years of research.” Ralph said that he could clearly see that Sugiura was impressed with the compound.

Ralph was immediately suspicious of the motives of the hospital, so he spent the next few years documenting the cover-up efforts from the medical professionals working at Sloan Kettering as well as from other officials working at NCI, FDA and ACS, who all seemed to be working collectively to discredit laetrile.  This knowledge bothered Ralph deeply but he was very conflicted as he didn’t want to risk losing his job.

Finally, in June 15, 1977, Sloan held a press conference to report on the results of the 5-year study with laetrile.  All of the top cancer officials at Sloan proclaimed in unison that laetrile had failed to show any promise as a cancer treatment even though these statements were in direct conflict with Sugiura’s data that remained buried within the report.  Ralph was so disgusted that he held a second press conference to blow the whistle on the cover-up efforts that he had witnessed but he was immediately fired and attacked publicly by Sloan-Kettering and the American Cancer Society.

For more information on Ralph’s first hand account, please watch the film Second Opinion: Laetrile At Sloan-Kettering.

Ralph Moss in the Trailer for the film Second Opinion

Studies relating to Laetrile

In 1981, the National Cancer Institute announced “that they had performed the most definitive study on laetrile to date, which proved beyond any shadow of doubt that laetrile was worthless as a treatment for cancer.”  But after studying the research, Ralph points out that these trials were designed to fail from the start.  Dr Charles Moertel, was put in charge of the study and he had already publicly  proclaimed himself to be “a sworn enemy of all forms of alternative medicine”, so there was already bias and a conflict of interest.   The 178 patients that were involved in the study were all suffering from very advanced, stage 4 cancers, and all had had prior chemotherapy treatments.  When these extremely ill patients failed to respond to laetrile, it was determined that it must be worthless as a cancer treatment.  But Ralph points out that there was no randomization to the trial.  What if some of these patients had been given chemotherapy, while others were given laetrile and then their mortality rates were judged?   What if laetrile’s mortality rate turned out to be the same, or even slightly better than that of chemotherapy?    Then the public would have realized that there was a very cheap product available that did not cause extreme toxicity to the body; one that did not cause a patient to feel deathly ill; or to lose their hair … .  Ralph later when on to write several definitive books on the politics related to alternative cancer research and maintains the website Cancer Decisions.

the tropholast theory of cancerHow the compound works:

Vitamin B-17 is a molecule made up of four parts: 2 parts Glucose, 1 part Benzaldahyde, 1 part Hydrogen Cyanide (which is also found in vitamin b12).

It is important to note that the body has the proper compounds to either neutralize the B17 molecules or to unlock to them at the site of cancer. This is because the enzyme rhodanese is found in normal healthy cells and it automatically neutralize the Benzaldahyde and Hydrogen Cyanide, converting them into harmless compounds which the body will then excrete.  Rhodanese is found everywhere in the body except for in (or around)  cancer cells or tumors.

In contrast, Beta-Glucosidase is found only at the site of cancer and is referred to as the “unlocking enzyme” since it will unlock the cyanide and benzaldahyde at the site of cancerous cells and tumors. When glucose delivers the B-17 molecules to the cancerous cells, they are unable to neutralize the cyanide since they lack the rhodanese enzyme. Instead, the cyanide and benzaldahyde are released at the site of cancer allowing them to target the cancer cells directly.  Please watch the video that is linked below for a complete explanation of this therapy.

Laetrile Dosage:

  • Vitamin B 17 or laetrile is not a stand-alone cancer cure but something that can be used in addition to other protocols.
  • Laetrile or B17 is not equally effective for all types of cancer. In a 1977 study, Rubin found that the compound was most effective for treating cancer of the Lung, Prostate, Breast, Liver, Brain, as well as lymphomas but was somewhat less effective in certain others including Sarcomas and Melanomas, and had relatively poor results for the various types of Leukemia.
  • Certified Organic Bitter Apricot Kernels can be found on Amazon or they can be obtained from online vendors. Always look for raw bitter kernels.
  • For a person with an active cancer: most experts in the alternative medical field would recommend 24 to 40 apricot kernels per day,  spreading them throughout the day.  Start by eating only 3-4 per day and then gradually build yourself to taking the higher amounts.
  • For a person in remission: 12- 16 apricot kernels a day, or 1 kernel per 10 pounds of body weight, once again, starting with 2-4 per day and building up to taking more.
  • Kernels should be taken with food.  They can be chewed whole or run through a coffee grinder and then sprinkled into foods such as smoothies, as an addition to oatmeal, salads, the Budwig cottage cheese/flax oil mixture, organic yogurt, etc.
  • Vitamin B17 Tablets can also be purchased online. Tablets are taken with water 1/2 hour before eating a meal.  Start with one tablet per day and then build yourself up to taking 4 per day (or 2,000 mg).
  • Tablets and kernels can be taken in combination with each other.
  • Various alternative clinics in Mexico offer intravenous laetrile therapy as part of their cancer treatment protocols.  This treatment is illegal in the US.
  • Do not take high-strength probiotics while taking apricot kernels as this may increase the amount of free hydrogen cyanide and this may create adverse side effects of the digestive system.

The following supplements are recommended in order for laetrile to work properly.

Ty Bollinger explains how the therapy works

The documentary World Without Cancer


  • Do not take high-strength probiotics while taking apricot kernels as this may increase the amount of free hydrogen cyanide and this may create adverse side effects
  • Apricot kernels generally combine very well with other alternative protocols
  • Start with a low dosage and then build up slowly to an optimal dosage


Carl O Helvie used B17 to treat his terminal lung cancer

Sandi Rog credits B17 with curing her stage 4 Non-Hodgkin’s Lymphoma

Felicity Corbin-Wheeler used Laetrile as part of her protocol to heal from pancreatic cancer

Allan Taylor used apricot kernels as part of his healing plan for colon cancer

John Curry used apricot kernels as part of his healing plan for prostate cancer

Online vendor for kernels and B17 capsules

Apricot Power- for apricot kernels and B17 capsules

Topical B17 cream with DMSO for skin lesions

 B17 Topical Cream with DMSO


Related Articles
Cancer is a wake up call which needs to be addressed on multiple fronts.  It is the result of an overly toxic body with an overwhelmed and collapsed immune system due to eating nutritionally depleted diets, exposure to toxins, and having poor lifestyle habits. Research an anticancer diet, adding supplements, detoxing the body, and making lifestyle changes so you can address a cancerous situation with a multifaceted approach.


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