A sudden death cocktail, also known as a widow’s cocktail, is a drink composed of a variety of drugs that can be used to quickly kill someone. The cocktail was supposedly created by a woman who was seeking to kill her husband, and it has been used in a number of high-profile murder cases.

The ingredients of a sudden death cocktail vary, but they often include a sedative, a paralytic, and a cardiac glycoside. When combined, these drugs can shut …