Karen Kirkpatrick is happy to talk to anyone about vitamin B17 on 01483 423235 (UK) 9am-5pm Monday-Friday. This is a private telephone number and she may not always be able to answer, but keep trying.


No information from may be construed as medical advice or instructions. Readers should consult appropriate health professionals on any matter relating to their health and wellbeing.

Summary of amygdalin/vitamin B17 therapy

For those with cancer and those in remission:

For fuller information see the notes Extra information on Vitamin B17 therapy, and Maintenance lifestyle for those who have had cancer. See also The Importance of enzymes.

I have based most of the following on the information given by Dr Philip Binzel, M.D. in his book Alive and Well (American Media, California 1994) Dr Binzel, an American GP, offered his patients vitamin B17 and nutritional therapy for 18 years until his retirement with amazing results. He was asked to consult his records and compare them with statistics from the American Cancer Society. His book tells his story and covers these results. Dr Binzel stresses the importance of being monitored by a doctor. Certainly this would be advisable if using the injectible laetrile as he did. However, with the ignorance of nutrition amongst most doctors, a lot of people have taken responsibility for themselves using the tablets. Perhaps working with a clinical nutritionist would be the best compromise.

Vitamin B17 and nutritional therapy has three parts to it: (1) vitamin B17, (2) supplements and (3) diet. It is important to follow all three - they work together. Binzel tells of the importance of being consistent with the therapy - people who had good results and then wavered for example on the diet sometimes had a reoccurrence of the cancer, which once again receded when they went back on the strict regime. If you think following a strict regime is going to be difficult, one answer, though expensive, is to go to a clinic specialising in laetrile (vitamin B17) and nutritional therapy.

Here follows the information about vitamin B17:

1. Start on the supplements and changed diet for 10-14 days before starting with the high doses of B17.

It has been suggested that the most important single consideration is to get the maximum amount of vitamin B17 into your body in the shortest possible time. However, there are two other pieces of information to add to this. Firstly, that for those with cancer, especially if the cancer is widespread, there may be side-effects such as nausea and feeling giddy when first starting to take either the laetrile (concentrated form of vitamin B17) or apricot kernels, if too high a dose is taken initially. Toxins are released as the laetrile destroys cancer cells and can cause a toxic crisis. Please also note that one side effect of taking laetrile is that it may lower blood pressure. This is a bonus for many people, but if you already have low blood pressure, you need to be carefully monitored. It is therefore best to increase the dose very gradually over the first few days, starting with half a 500mg tablet or just a few kernels, and to drink water (try at least six to eight 8-oz glasses per day). Dr Binzel does not start his patients on high doses of laetrile until they have been on vitamins and enzymes and changed their diet for ten to fourteen days. So it would seem a good idea to increase the amount of kernels or tablets taken very gradually over a period of ten days or so, while also adjusting to the multivitamin/mineral and other supplements suggested, getting used to the change in diet and to the detoxification taking place.


  • Taking vitamin B17 seems to help some people with high blood pressure, so for anyone with low blood pressure it would be important to go carefully and monitor progress.
  • If a toxic crisis is experienced this could be viewed as good news - it means something is happening - but it requires careful managing and a nutrition professional would be able to help with this. (See Toxic Crisis - Coping With Reactions.)

2. The B17 regime suggested is as follows: after the initial period of adjustment with supplements and diet mentioned above, the recommendation for a period of 21 - 30 days is:

  • 5 South African apricot kernels per waking hour up to a total of 50 kernels per day, (NB Kernels vary in size: Californian kernels are large and 3-5 per hour is appropriate. If using small Hunza kernels, the equivalent measurement is approximately 3gms per waking hour up to a total of 30 gms per day). Please see comments on How to eat apricot kernels or laetrile tables.
  • and/or six of the 500mg laetrile tablets per day, spread out during the day (see How to eat apricot kernels or laetrile tables) NB Start slowly with half a tablet a day, increasing gradually to two tablets three times daily.
  • Please note: If both laetrile and kernels are taken, then Dr Krebs recommends that there should be two hours between taking them. While high doses of laetrile are taken, the number of kernels taken can be less.

3. Maintenance: at the end of the month, or when the cancer is in remission, Binzel lowers the dose of laetrile gradually over three months down to two tablets 500mg per day thereafter, indefinitely. For those eating kernels I find no recommendations for maintenance levels. (In 2002) I personally have four lots of apricot kernels (breakfast, lunch, tea, supper) and at least 2 hours later, at bedtime, I take the two laetrile 500mg tablets. Now in 2011, I find 10 kernels daily is adequate alongside the laetrile. For fuller information on maintenance lifestyle for those who have had cancer click here.

For prevention - including anyone reading this on behalf of a loved one with cancer - the recommendation is 5-6 kernels twice a day (or 1½/ teaspoons ground kernels twice a day), for example one amount in the morning and the other in the evening. For fuller information see Cancer prevention - a change in our diet.

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