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Some very well-respected researchers have demonstrated that cancer may be nothing more than a deficiency of laetrile, also known as vitamin B17 or sometimes amygdalin. Like scurvy, a disease caused by a deficiency of vitamin C, cancer has all the attributes of a deficiency disease. Vitamin B17 should be a vital part of nearly all cancer protocols unless its use could interfere with the treatment protocol (for example, Protocel should be used as a strictly stand-alone cancer treatment—see below for more information about protocols that can safely incorporate the use of vitamin B17). In cases where vitamin B17 supplementation isn’t a viable part of the initial cancer treatment protocol, patients should consider supplementing with this vitamin as soon as the protocol ends.
Laetrile is perhaps the most unrighteously scandalized cancer treatment currently known to man. When laetrile is used as a cancer treatment prior to the use of chemotherapy, radiation, or surgery, it’s effectiveness at treating cancer is between 80 – 85%. This is because laetrile is considered by experts to be a vitamin. A deficiency of vitamin B17 causes a variety of symptoms including cancer. Relieving the deficiency by providing the patient with laetrile in the form of an I.V. (which is more powerful than taking it orally) or amygdalin in the form of apricot kernels (less powerful, but beneficial to everyone whether they have cancer or not) or specially formulated capsules of vitamin B17 gets rid of the symptoms (such as cancer) that are associated with the deficiency .
Laetrile, also known as vitamin B17 or amygdalin is derived from the extract of an apricot kernel (the kernel is located in the pit of the apricot). These three substances (Laetrile, B17, and amygdalin) are related, but slightly different from each other. Amygdalin is the natural, raw substance that comes from the seeds or kernels of many fruits including apricots, but it is also present in lima beans, clover, and sorghum. Vitamin B17 is a name that was coined by Dr. Eugene Krebs, Jr. He was the one who first discovered amygdalin and since this substance is naturally-occurring, non-toxic, water-soluble, and able to be metabolized by humans, he referred to it as a vitamin. Laetrile is different from amygdalin/vitamin B17 (the raw substance found in foods) because laetrile is a concentrated, purified form of amygdalin. Laetrile therapy is one of the most popular and well-known alternative cancer treatments because it is easy to use and it’s effective when used in high enough doses, but it is also one of the most controversial alternative cancer treatments because of its high potential to cure cancer. High-quality laetrile is often administered to patients in high doses along with special nutritional supplements and a cancer diet. Laetrile targets and kills cancer cells while boosting the immune system at the same time .
Dr. Harold Manners a developmental biologist, tested laetrile in the 1970’s to find out how it worked to kill cancer cells. He found that laetrile contains a deadly cyanide that is released only when it comes into contact with cancer cells. Cancer cells release an enzyme called beta-glucoside that allows the laetrile to release its cyanide. The beta-glucosidase untethers two potentially toxic substances: benzaldehyde and cyanide. Although in the past, scientists thought that it was the cyanide that killed cancer cells, today, scientists believe that the benzaldehyde may be the substance most toxic to the cancer. Another enzyme known as rhodanese found in normal tissues, neutralizes excess cyanide so that it can be excreted in the urine and doesn’t affect healthy tissues .
In addition to the targeted cancer-poison that it emits, laetrile works to fight cancer by boosting the immune system. Cancer cells are covered by a protein coating that has a negative, white-blood-cell-repelling, electric charge. This charge unfortunately wards off white blood cells, but laetrile works with pancreatic enzymes to attack cancer successfully, adding another layer to its effectiveness . By adding pancreatic enzymes to an anti-cancer protocol involving laetrile, the cancer treatment is made even more effective.
According to Dr. Antonio Jiminez of the Hope4Cancer Clinic in Tijuana, Mexico, the positive effects of laetrile therapy include:
- Anti-cancer activity
- Analgesia/pain control
- Overall enhancement of well-being 
Eating 20 to 40 apricot kernels per day is the recommended dose for patients with cancer, depending on their health history and where the cancer is located. It’s important for cancer patients to receive a high enough dose of amygdalin or laetrile because otherwise, healthy cells might destroy the laetrile (by secreting rhodanese) before it can react with the beta-glucosidase of a cancer cell .
Laetrile and its effects on cancer created quite a stir at the FDA and in major cancer treatment centers like Sloan-Kettering. While you’d think that something like laetrile would make these organizations rejoice, it was quite the opposite. The FDA keeps a vigilant eye on laetrile to protect the interests of pharmaceutical companies. Sloan-Kettering worked hard to discredit its own research that proved laetrile was an effective cancer treatment. It was only by discrediting the research done by Dr. Kanematsu Suguira that Sloan-Kettering was able to protect its private interests in maintaining that cancer can only be “treated” with the standard protocol: surgery, radiation, and chemotherapy .
Dr. Philip Binzel developed a cancer cure diet that he used to effectively treat patients despite the government’s attempts to get him to stop. His laetrile diet and treatment plan along with the political difficulties he encountered while treating patients is outlined in his book Alive and Well: One Doctor’s Experience With Nutrition in the Treatment of Cancer Patients .
In the 1970’s, Dr. Harold Manners had never encountered any resistance to getting any drug he wanted because of his credentials. He held a controlled substance license with both the state of Illinois and the federal U.S. government. This license made it so he could even get substances like morphine or cocaine to use for research. Dr. Manners had been ordering a wide variety of controlled substances for over 30 years to use in his research, but when he tried to order laetrile (the extract of an apricot pit) from the company Sigma for research, the FDA required an affidavit for the order and required Dr. Manners to promise to never use it on a human being. Later, the FDA required 2 affidavits from Dr. Manners. He had to promise never to use the laetrile on any animals other than his own because veterinarians were having great success treating cancer-afflicted animals with laetrile .
In a legislature meeting following the publication of toxicity studies that were sent to the National Cancer Institute and Sloan Kettering proving that laetrile is non-toxic even at high doses, Dr. Young, an FDA representative told the senators:
“Gentlemen, the FDA cannot support the use of laetrile because it is an “unsafe” substance.”
Dr. Manners responded, “How can you say that? You have my report that it is non-toxic.”
Dr. Young: “I didn’t say it was toxic. I said it was unsafe.”
The reason why this representative of the FDA was able to decree that laetrile was “unsafe” (though it is non-toxic) is because if a person uses laetrile, they might not use orthodox therapy (chemotherapy, radiation, and surgery). Therefore, laetrile is “unsafe” to the economic interests of the pharmaceutical and cancer industries. The word “unsafe” is not technically a lie. A variety of scare-tactics are still used by the government to make the American public believe that laetrile is a dangerous substance .
Laetrile is currently banned in the United States though apricot kernels and apricot-kernel pills can be purchased there as nutritional supplements. However, intravenous laetrile therapy is administered legally in Mexico, Germany, and parts of Asia .
Safety and Effectiveness
For over 200 years, laetrile in the form of amygdalin in bitter almonds (known as”xing ren”), has been used in Traditional Chinese Medicine. It has been shown to exert the following effects on the body:
- Calms respiratory movement
- Anti-tussive (cough suppressant)
- Promotes the synthesis of pulmonary surfactant
- Inhibits the activity of pepsin
- Has a therapeutic effect on chronic gastritis
- Has a therapeutic effect on gastric ulcers
- Has analgesic effects
- Anti-inflammatory properties
- Causes the apoptosis of cancer cells
- Improved immune function 
A large number of studies have shown that amygdalin can play a supporting role in the treatment of the following diseases:
- Immune dysfunction and suppression
- Chronic kidney diseases 
Scientific tests run by Dr. Manners on lab animals showed that even after administering 10 times the maximum dose ever given to a human being in any clinic, the lab rats were alive and healthy. After four weeks of daily injections, the animals being given laetrile were healthier than the control animals not being given laetrile. Dr. Manners completed toxicity studies to demonstrate that laetrile is non-toxic .
Laetrile is effective as a cancer cure when administered in tandem with other treatments such as:
Vitamin B17 is less effective as a stand-alone cure. Pancreatic enzymes (derived from lentils, peas, papaya, the thymus gland of a rat, and pancreatin from a cow pancreas) break down the outer protein-shell around the cancer cells. Once the outer shell is broken down, the body is able to recognize the cancer as a foreign invader and the immune system (if it is properly boosted with diet and vitamin therapy) can begin to work. The laetrile goes to work as the immune system is rebuilding. B17 releases cyanide to kill the cancer cells. A number of studies have shown that amygdalin and laetrile have significant anti-tumor properties .
There are 1500 foods that contain healing nitrilosides . People regularly consume amygdalin in the following foods:
- Apricot seeds (located inside the pit)
- Bitter almonds
- Grape seeds
- Apple seeds
- Bean sprouts
- Lima beans
- Peach kernels (located inside the pit)
- Bamboo shoots
- Macadamia nuts
- Millet grain
- Buckwheat flour 
In 1977, over 40 years ago, Newsweek reported that at that time as many as 70,000 Americans had traveled to Mexico for laetrile treatment. Laetrile is also currently legal in Germany (see below) and parts of Asia and patients continue to travel en masse to these destinations for laetrile treatment half a decade later because it still isn’t available in the United States .
How Laetrile Is Administered
Kernels and Capsules – Oral Administration
Patients can consume vitamin B17 in organic, bitter, raw apricot kernels or as capsules. Cancer patients are advised to take four 500 mg tablets per day. The capsules should be taken 30 minutes before meals and once before bedtime for a total daily dose of 2000 mg. If vitamin B17 is being consumed in the form of apricot kernels, the patient is advised to eat 20 to 40 per day, ideally, spreading the dose out over the course of the day such that the patient never eats more kernels at one time than they would if they were eating the whole apricot along with the kernels. Vitamin B17 in the form of capsules or in the form of apricot kernels should never be consumed at the same time as fruits or supplements containing vitamin C because the vitamin C can “burn up” the vitamin B17, cancelling its health-giving effects .
A 60 kilogram person should receive an intramuscular injection of 9 to 12 grams of laetrile daily along with 1 million IU of vitamin A and high-dose vitamin C (given at a different time of day). The vitamin A must be manufactured such that it is highly emulsified and therefore bypasses the liver and goes directly into the lymphatic system. Otherwise, high-dose vitamin A will cause liver damage. Intramuscular injections given daily can be painful so this administration route is one of the least favored by patients .
Intravenous laetrile is administered at 3 to 9 grams per day for 6 to 7 days, depending on each individual case. Typically, a laetrile IV drip takes about 30 minutes to administer. Intravenous laetrile is the most preferred administration method .
Cancer Protocols That Can Incorporate Vitamin B17
It’s important that patients don’t randomly mix laetrile therapy with other cancer treatments because these other treatments could cancel out the positive effects of laetrile. Laetrile can be administered in combination with the following at-home protocols:
- Cesium Chloride
- Cellect-Budwig Protocol
- High RF Frequency Protocol
- Bob Beck Protocol
- Binzel Diet 
Possible Negative Effects
Laetrile appears to be non-toxic, though it is possible to over-indulge on apricot kernels, which can lead to nausea, vomiting, a cherry-red skin color, headache, fever, and lethargy. Cancer patients are advised to consume no more than 40 apricot kernels a day for best results. .
Laetrile pills should be taken with water right before eating and in conjunction with enzymes such as chymotrypsin and trypsin. While these enzymes allow the laetrile to penetrate cancer cells, they also thin the blood and should only be taken according to the recommended maximum dosage .
Other Important Information
Harold Manner Memorial Hospital – Tijuana, Mexico
The Harold Manner Memorial Hospital is located in Tijuana, Mexico, just a few miles south of San Diego, California. The hospital has been treating cancer patients for 20 years. A course of treatment typically lasts for 3 weeks to 90 days. A custom course of therapy including laetrile IV therapy, detoxification, nutritional and vitamin supplementation, proteolytic enzymes, DMSO, a cancer diet, and rest is prescribed.
Vitamin B17 Sources – Apricot Kernels
Though companies that offer apricot kernels cannot make any medical claims on their web sites, it is possible to order apricot kernels for at-home consumption. Apricot kernels should be organic, bitter, and raw. Below is an apricot kernel vendor:
Facilities That Offer Intravenous Vitamin B17 Treatments:
Hope4Cancer – Tijuana, Mexico
Hope4Cancer is an integrative medicine hospital that offers laetrile therapy.
Avenue del Pacifico 650
Tijuana, Baja California 22504
Harold Manner Memorial Hospital
1-800-433-4962 / 1-800-248-8431
An Oasis of Healing – Mesa, AZ
210 North Center St.
Mesa, AZ 85201
An Oasis of Hope – Tijuana, Mexico
Oasis of Hope is a cancer treatment center that offers Apricot Seed Extract Therapy.
1-888-500-4673 | +1 (619) – 690 – 8450
Kelowna Naturopathic Clinic – Kelowna, BC
Dr. Garrett Swetlikoff, ND
Nasri Chelation Clinic – Ontario Canada
Dr. Durenfeld and Dr. Nasri
(705)735-2354 | 905-266-0959
Hyperthermia Center – Hannover, Germany
Dr. Peter Wolf and Dr. Mohamed Ali Zayen
Oskar Winter Str. 9
30161 Hannover, Germay
+49 (0) 511-66-30-28
Infusio – Frankfurt, Germany
It’s important for laetrile therapy to be part of an integrative cancer treatment program that also includes dietary changes, and vitamin supplementation with vitamins such as vitamin C and vitamin A .
Also of interest in the laetrile story is the fact that all of the men at Sloan-Kettering who protected the financial interests of the pharmaceutical industry by covering up the value of laetrile in treating cancer died of cancer themselves .
 The Cancer Cure Foundation. (1978). Dr. Harold W. Manner. Retrieved April 17, 2018 from http://www.encognitive.com/node/4228
 Cancer Tutor (2018). Vitamin B17 vs. Laetrile. Retrieved April 17, 2018 from https://www.cancertutor.com/laetrile/
 Griffin, G. E. (1974). World Without Cancer, 3rd Ed. American Media, Inc.
 Merola, E. (2014). A Miracle Drug or Quackery? ‘Second Opinion,’ on the Dispute Over Laetrile. Retrieved April 23, 2018 from https://www.nytimes.com/2014/08/29/movies/second-opinion-on-the-dispute-over-laetrile.html
 Moss., R. W. (2014). Second Opinion: Laetrile at Sloan-Kettering. Video.
 Zuoquing, S. & Xiaohong, X. (2014). Advanced research on anti-tumor effects of amygdalin. Retrieved April 24, 2018 from http://www.cancerjournal.net/article.asp?issn=0973-1482%3Byear%3D2014%3Bvolume%3D10%3Bissue%3D5%3Bspage%3D3%3Bepage%3D7%3Baulast%3DSong
 Guo, J., Wu, W., Sheng, M., Yang, S., Tan, J. (2013). Amygdalin inhibits renal fibrosis in chronic kidney disease. Retrieved April 24, 2018 from https://www.ncbi.nlm.nih.gov/pubmed/23525378
 Jiagang, D., Li, C., Wang, H., Hao, E., Du, Z., Bao, C. et al. (2011). Amygdalin mediates relieved atherosclerosis in apolipoprotein E deficient mice through the induction of regulatory T cells. Retrieved April 24, 2018 from https://www.ncbi.nlm.nih.gov/pubmed/21756879
 Perez, J. J. (2013). Amygdalin analogs for the treatment of psoriasis. Retrieved April 24, 2018 from https://www.ncbi.nlm.nih.gov/pubmed/23651093
 Heikkila, R. E., Cabbat, F. S. (1980). The prevention of alloxan-induced diabetes by amygdalin. Retrieved April 24, 2018 from https://www.sciencedirect.com/science/article/pii/0024320580900065
 Fukuda, T., Ito, H., Mukainaka, T., Tokuda, H., Nishino, H., Yoshida, T. (2003). Anti-tumor promoting effect of glycosides from Prunus persica seeds. Retrieved April 24, 2018 from https://www.ncbi.nlm.nih.gov/pubmed/12576693
 Zhu, Y. P., Su, Z. W., Li, C. H. (1994). Analgesic effect and no physical dependence of amygdalin. Retrieved April 24, 2018 from https://www.ncbi.nlm.nih.gov/pubmed/8011131
 Binzel, P. E. Jr. (1994). Alive and Well: One Doctor’s Experience With Nutrition in the Treatment of Cancer Patients. American Media.