These are raw, organic bitter apricot seeds (kernels) — the natural source of amygdalin, often marketed as "vitamin B17." It is not a recognized vitamin, and clinical research has not supported cancer-treatment claims made about it over the decades. Because amygdalin converts to cyanide in the body, bitter apricot seeds should only be eaten in small amounts and never in excess of labeled serving guidance. Not a substitute for medical treatment; check with your doctor if you're managing a health condition.