Lethal injection is a method of executing a person sentenced to death. It typically involves administering a series of drugs that induce unconsciousness, paralysis, and ultimately, cardiac arrest. This process is designed to be quick and painless, making it a common choice for capital punishment in many jurisdictions. The procedure usually involves three main drugs: an anesthetic to render the person unconscious, a paralytic agent to stop muscle movement, and a drug that induces cardiac arrest. While lethal injection is intended to be humane, it has faced criticism and legal challenges regarding its effectiveness and the potential for suffering.