Amygdalin or sometimes people refer it to vitamin b17, is said to be an alternative treatment for cancer, when it was taken on an increased doses. However, FDA has never approved on this. Vitamin B17 can be found in Apricot kernels. Per the recommendation, 24 to 40 kernels are needed daily. Same as other vitamins, it is best to consume base on the daily recommendation amount to avoid any unnecessary side effects.