Vitamin B17; Deficiency Symptoms, Food Source, Health Benefit

Patient Tools

Read, save, and share this guide

Use these quick tools to make this medical article easier to read, print, save, or share with a family member.

On this page4 sections

Article Summary

Vitamin B17 is a naturally occurring chemical compound, famous for falsely being promoted as a cancer cure. It is found in many plants, but most notably in the seeds (kernels) of apricot, bitter almonds, apple, peach, and plum.Amygdalin is classified as a cyanogenic glycoside because each amygdalin molecule includes a nitrile group, which can be released as the toxic cyanide anion by the action of a beta-glucosidase: eating amygdalin will cause it to release cyanide in the...

Key Takeaways

  • This article explains Deficiency Symptoms of Vitamin B17 in simple medical language.
  • This article explains Food Source of Vitamin B17 in simple medical language.
  • This article explains Health Benefits of Vitamin B17 in simple medical language.
Before reading

RX Patient Tools

Use these quick guides before reading the article, or return to them when you need help preparing questions for a doctor.

Start here Choose the right pathway for symptoms, reports, medicines, or urgent warning signs. Disease article roadmap Read this topic step by step: meaning, symptoms, warning signs, diagnosis, treatment, prevention, and follow-up. Treatment planner Prepare questions about treatment choices, benefits, risks, side effects, and follow-up. Family & caregiver guide Organize symptoms, reports, medicines, questions, and follow-up safely. Nutrition & diet guide Prepare food, hydration, supplement, and medicine-timing questions safely. Prevention guide Organize risk factors, protective habits, screening, and warning signs. Recovery guide Prepare a safe plan for activity, rehabilitation, warning signs, and follow-up.
Educational health guideWritten for patient understanding and clinical awareness.
Reviewed content workflowUse writer and reviewer profiles for stronger trust.
Emergency safety firstUrgent warning signs are highlighted below.
Choose your reading view

Patient View highlights a simple learning journey. Clinical View reveals structure, evidence, and editorial completeness.

Definition

Vitamin B17 is a naturally occurring chemical compound, famous for falsely being promoted as a cancer cure. It is found in many plants, but most notably in the seeds (kernels) of apricot, bitter almonds, apple, peach, and plum.Amygdalin is classified as a cyanogenic glycoside because each amygdalin molecule includes a nitrile group, which can be released as the toxic cyanide anion by the action of a beta-glucosidase: eating amygdalin will cause it to release cyanide in the human body, and may lead to cyanide poisoning. Neither amygdalin nor laetrile is a vitamin.

Deficiency Symptoms of Vitamin B17

  • High blood pressure
  • Lowering levels
  • Rheumatism
  • Angina
  • Heart troubles
  • Asthma
  • Hypertension
  • Alcoholism
  • Cancer
  • of the
  • High cholesterol
  • Arteriosclerosis
  • Headaches
  • Emotional and mental stress
  • of red blood cells
  • Pernicious
  • Accelerated production of cancer cells
  • This is an important vitamin for the body and its deficiency may lead to the destruction of red blood cells, anemia, usually pernicious anemia as well as increasing growth of cancerous cells in the body.

Food Source of Vitamin B17

It contains purified amygdalin, which is a compound found naturally in the following :

  • Raw nuts – Such as bitter almonds, raw almonds and macadamia nuts.
  • Vegetables – Carrots, celery, bean sprouts, mung beans, lima beans and butter beans.
  • Seeds – Millet, flaxseeds and buckwheat.
  • Pits of –  Apples, plums, apricots, cherries and pears.
  • Foods with the highest amount of B-17 are apricot kernels and bitter almonds. Almost all fruit pips and kernels are filled with B-17, so eating apple seeds as well as the seeds from other fruits is an excellent way to receive the nutrient.
  • Bamboo Shoots Barley Beet tops Blackberries, boysenberries, cranberries and raspberries Brewer’s yeast Brown rice, buckwheat and millet Butter beans, lima beans, fava beans, and garbanzo beans Cashews, macadamia nuts and pecans Currants Flax seeds Cassava Lentils Loquats Spinach Sprouts Wheatgrass

Health Benefits of Vitamin B17

While most of the research on laetrile focuses on its effects on cancer, some studies have found that amygdalin, the natural form of laetrile, may have other health benefits.

Here are a few possible health benefits of amygdalin:

  • It may lower blood pressure – In one study, amygdalin helped lower systolic blood pressure (upper value) by 28.5% and diastolic blood pressure (lower value) by 25%. These effects were enhanced when taken with vitamin C .
  • It may relieve – Several animal studies show that amygdalin may help relieve pain caused by inflammatory conditions, such as . However, there is a lack of human-based evidence in this area .
  • It may boost – A test-tube study found that amygdalin improved the ability of immune cells to adhere to cancer cells .
  • Its anti-cancerous properties aside – Vitamin B17, especially if derived from natural food sources instead of supplements, can bring in a bevy of health benefits. They include:
  • Regulating  Vitamin B17 can help regulate hypertension issues due to the formation of thiocyanate, instrumental in lowering high blood pressure.
  • Boosts the Immune System – Vitamin B17 is also known to work wonders for the immune system. Dr. Anju Sood, a Bangalore based-nutritionist, hails the biggest benefit of the vitamin to be its potential to increase white blood cells, which improve immunity.
  • Great Antioxidant – Some experts also claim the ability of the vitamin to associate with other powerful antioxidants like vitamin A, C and E to break down and eradicate toxic cells from our body, thus aiding a natural detox process and promoting overall health.

References

  1. “Laetrile: the regulatory challenge of an unproven remedy”Public Health Rep99 (4): 333–8. PMC 1424606Vitamin B17; Deficiency Symptoms, Food Source, Health BenefitPMID 6431478.
  2. Application of the Prunus spp. Cyanide Seed Defense System onto Wheat: Reduced Insect Feeding and Field Growth Tests”Journal of Agricultural and Food Chemistry64 (18): 3501–3507. doi:10.1021/acs.jafc.6b00438ISSN 0021-8561PMID 27119432.
  3. https://www.healthline.com/nutrition/laetrile-vitamin-b17
  4. Wikipedia contributors. “Amygdalin.” Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, 10 Mar. 2017. Web. 11 Apr. 2017.
  5. United States, Food and Drug Administration. “Laetrile, the Commissioner’s decision” 1978
  6. https://food.ndtv.com/health/vitamin-b17-sources-and-why-you-must-not-skip-them-1679476

Vitamin B17; Deficiency Symptoms, Food Source, Health Benefit

RX Medical Knowledge Graph

Explore this medical topic

Continue through verified related conditions, investigations, medicines, and patient guides. These links are educational and do not replace professional medical advice.

RX Clinical Pathway Engine

Continue through a complete learning pathway

Move from understanding the topic to symptoms, tests, treatment, medicines, monitoring, and prevention.

Search the complete library
  1. Understand the condition Begin with the essential facts and a clear explanation of the topic.
  2. Recognize symptoms Learn common symptoms, signs, and patterns of presentation.
  3. Know when to seek help Review urgent warning signs and when professional assessment may be needed.
  4. Understand causes and risks Explore causes, risk factors, mechanisms, and contributing conditions.
  5. Explore tests and diagnosis Learn how clinicians assess the condition and which investigations may be discussed.
  6. Learn treatment approaches Review general treatment categories and management principles.
  7. Understand medicines safely Continue to medicine education, uses, precautions, and monitoring.
  8. Plan monitoring and follow-up Understand monitoring, complications, rehabilitation, and follow-up learning.
  9. Review prevention and self-care Explore prevention, healthy routines, and questions to discuss with a clinician.

Conditions & Diseases

Background, symptoms, causes, diagnosis, and care.

Explore this library

Tests & Investigations

Laboratory, imaging, screening, and diagnostic education.

Explore this library

Medicines

Uses, safety, monitoring, and related medicine knowledge.

Explore this library

Cancer Knowledge

Cancer types, screening, oncology, and treatment education.

Explore this library
Doctor visit helper

Prepare before seeing a doctor

A simple rural-patient checklist to help you explain symptoms clearly, ask better questions, and avoid unsafe self-treatment.

Safety note: This is not a prescription or diagnosis. For severe symptoms, pregnancy danger signs, children with serious illness, chest pain, breathing difficulty, stroke-like weakness, or major injury, seek urgent care.

Which doctor may help?

Dermatologist or general physician; emergency care for severe allergic reaction.

What to tell the doctor

  • Take photos of rash progression and bring list of new medicines/foods/cosmetics.

Questions to ask

  • Is this allergy, infection, eczema, psoriasis, drug reaction, or another skin disease?
  • Is steroid cream safe for this place and duration?

Tests to discuss

  • Skin examination
  • Skin scraping/KOH test if fungal infection is suspected
  • Biopsy only for unclear or serious lesions

Avoid these mistakes

  • Avoid unknown mixed creams, especially on face, groin, children, or pregnancy.
  • Seek urgent care for swelling of lips/face, breathing trouble, widespread blisters, or rash with fever.

Medicine safety and first-aid guide

This section is for patient education only. It does not replace a doctor, pharmacist, or emergency care.

Safe first steps

  • Stop activity and seek urgent medical evaluation.
  • Chest pain should not be managed only with home medicine.
  • Discuss ECG and cardiac blood tests with emergency care when appropriate.

OTC medicine safety

  • Do not take random painkillers to hide chest pain before medical evaluation.

Avoid these mistakes

  • Do not start antibiotics without a proper medical decision.
  • Do not use steroid tablets or injections casually for quick relief.
  • Do not delay emergency care because of home remedies.

Get urgent help if

  • Chest pressure, sweating, breathlessness, fainting, pain spreading to arm/jaw/back, or known heart disease needs emergency care.
Medicine names, dose, and timing must be decided by a qualified clinician or pharmacist after checking age, pregnancy, allergy, other diseases, and current medicines.

For rural patients and family caregivers

Patient health record and symptom diary

Write your symptoms, medicines already taken, test results, and questions before visiting a doctor. This note stays on your device unless you print or copy it.

Doctor to discuss: Doctor / qualified healthcare provider
Tests to discuss with doctor
  • Basic vital signs: temperature, pulse, blood pressure, oxygen level if needed
  • Relevant blood, urine, imaging, or specialist tests only after clinical assessment
Questions to ask
  • What is the most likely cause of my symptoms?
  • Which warning signs mean I should go to emergency care?
  • Which tests are really needed now?
  • Which medicines are safe for my age, pregnancy status, allergy, kidney/liver/stomach condition, and current medicines?

Emergency warning signs such as chest pain, severe breathing difficulty, sudden weakness, confusion, severe dehydration, major injury, or loss of bladder/bowel control need urgent medical care. Do not wait for online information.

Safe pathway to proper treatment

Care roadmap for: Vitamin B17; Deficiency Symptoms, Food Source, Health Benefit

Use this simple roadmap to understand the next safe steps. It is educational and does not replace examination by a doctor.

Go to emergency care if you notice:
  • Severe or rapidly worsening symptoms
  • Breathing difficulty, chest pain, fainting, confusion, severe weakness, major injury, or severe dehydration
Doctor / service to discuss: Qualified healthcare provider; specialist depends on symptoms and examination.
  1. Step 1

    Check danger signs first

    If danger signs are present, seek emergency care and do not wait for online information.

  2. Step 2

    Record the symptom story

    Write when symptoms started, severity, medicines already taken, allergies, pregnancy status, and test results.

  3. Step 3

    Visit a qualified clinician

    A doctor, nurse, or qualified healthcare provider can examine you and decide which tests or treatment are needed.

  4. Step 4

    Do only useful tests

    Do tests after clinical assessment. Avoid unnecessary tests, random antibiotics, or repeated medicines without diagnosis.

  5. Step 5

    Follow up and return early if worse

    If symptoms worsen, new warning signs appear, or treatment is not helping, return for review quickly.

Rural patient practical tips
  • Take a written symptom diary and all previous prescriptions/test reports.
  • Do not hide medicines already taken, even herbal or over-the-counter medicines.
  • Ask which warning signs mean urgent referral to hospital.

This roadmap is for education. A real diagnosis and treatment plan requires history, examination, and clinical judgment.

Internal learning pathway

Explore related RX articles

Related guides from RX Harun are grouped to help readers move from overview to symptoms, tests, treatment, and safe next steps.

Dairy and Food Suppliment (A - Z)
  1. Phosphorus DefinitionWhite phosphorus is used in the manufacture of munitions, pyrotechnics, explosives, smoke bombs, in artificial fertilizers, and rodenticides.…
  2. BK Polyoma Virus Nephropathy DefinitionBK Polyoma Virus Nephropathy (BKVN) is a kidney? condition caused by the BK virus. This virus…
  3. Ice Apple DefinitionBorassus flabellifer, commonly known as doub palm, palmyra palm, tala or tal palm, toddy palm, lontar palm, wine palm, ထန်းပင် (htan-pin) or ice apple,[rx][rx] is a fan palm native to…
  4. Have Discolored Nails? Try This DefinitionFungi can transform your nails into yellowed, cracked fragments of what they used to be. Hydrogen…
  5. Heart-Healthy Superfoods DefinitionHeart disease is the leading cause of death in the world, but it doesn’t have to…
  6. Vitamin K Deficiency DefinitionVitamin K is a crucial nutrient that plays a vital role in blood clotting, bone health,…