Truth and Facts
Vitamin B17, Amygdalin and Laetrile
There are 3 names which are used interchangeable being Vitamin B17, Laetrile and Amygdalin, however they are not the same. Cyanogenic glycosides are a large group of secondary metabolites that are widely distributed in the plant kingdom, including many plants that are commonly consumed by humans.
Amygdalin is a natural compound often found on seeds (kernels) of apricots, bitter almonds, apples, peaches, and plums. There is a nitrile group in each amygdalin molecule, thus, its official classification is of a cyanogenic glycoside.
Laetrile is a patented compound registered in 1961 as a semisynthetic derivative of amygdalin synthesized by hydrolysis from its natural counterpart. The patented version of this chemical compound is different from amygdalin extracted from apricots seeds.
Multiple seeds and fruit kernels have amygdalin inside of them, the main one is the seed inside the apricot endopcarp "inner woody stone", other seeds with significant amounts of vitamin b17 are:
Fruit | Amygdalin Content | Weight of seeds |
---|---|---|
Black cherry | 14.37mg | ± 0.28g |
Red cherry | 3.89mg | ± 0.31g |
Nectarine | 0.12mg | ±0.01g |
Peach | 6.81mg | ± 0.02g |
Green plum | 17.49 | ± 0.26g |
Black plum | 10.0mg | ±0.14g |
Purple plum | 2.16mg | ±0.02g |