A suicide pill (also known as a lethal pill) is a pill, capsule or tablet containing a fatally poisonous substance that a person ingests deliberately in order to quickly cause their own death. This is done in order to avoid an imminent and far more unpleasant death (such as through torture) or to ensure that they cannot be interrogated and leak sensitive information. As a result, lethal pills have important psychological value to persons carrying out missions with a high risk of capture and interrogation.