laetrile

la·e·trile

noun, often capitalized \ˈlā-ə-(ˌ)tril, -trəl\

Definition of LAETRILE

: a drug that is derived especially from pits of the apricot (Prunus armeniaca of the rose family), that contains amygdalin, and that has been used in the treatment of cancer although of unproved effectiveness