Some Controversies about Vitamin B17 Sources As a matter of fact, vitamin b17 sources are actually referring to a class of substances cyanogenic glycosides that derived from laetrile. Meanwhile, the structure and properties are similar with laetrile. Although it is called as the Vitamin b17, its vitamin status has not been widely recognized from the scientific community. That is to say, the "Vitamin b17" is not really a vitamin.
However, there is no credible evidence to support the benefits of this substance supplement. And there is no evidence that the body lacks what the exact consequences of such substances. In addition, people can put laetrile as drug use, which can date back to the 19th century. People had to try to make it into anticancer drugs in the 19th century. The substance was withdrawal from the market due to poor results and high toxicity. Then laetrile molecules will be transformed to obtain a synthetic analogue of laetrile by his son Ernst to the 1950s. What’s more, it is also claimed to be equipped with anti-cancer function. And they claim that this substance can treat and control cancer. In addition, it may cause cancer if lack of vitamin b17. Generally, many scientists have conducted many experiments from cell experiments to animal experiments to verify the anti-cancer effect Laetrile and laetrile substances. Moreover, the laetrile substances show some signs of anti-cancer in some experiments. For example, this substance can be used for the induction of apoptosis to some extent. However, most studies have come to the conclusion that it is invalid. Especially clinical studies equipped with useful and instructive also show that this substance is invalid for anti-cancer.
Although there are many patients with cancer who still use this way to treat cancer, some professional organizations do not recognize its role of anti-cancer. Especially, this saying may be lacking in related evidence.