Methods of Execution

Lethal Injection

Though lethal injection has been used for a majority of the executions carried out in the modern era, it is plagued by problematic executions and controversy.

Overview 

All states and the fed­er­al gov­ern­ment use lethal injec­tion as their pri­ma­ry method of exe­cu­tion. Jurisdictions use a vari­ety of pro­to­cols typ­i­cal­ly employ­ing one, two, or three drugs. Most three-drug pro­to­cols use an anes­thet­ic or seda­tive, fol­lowed by a drug to par­a­lyze the inmate, and final­ly a drug to stop the heart. The one and two-drug pro­to­cols typ­i­cal­ly use an over­dose of an anes­thet­ic or seda­tive to cause death.

Although the con­sti­tu­tion­al­i­ty of lethal injec­tion has been upheld by the Supreme Court, the spe­cif­ic appli­ca­tions used in states con­tin­ues to be wide­ly chal­lenged pri­or to each exe­cu­tion. Because it is increas­ing­ly dif­fi­cult to obtain the drugs used in ear­li­er exe­cu­tions, states have resort­ed to exper­i­ment­ing with new drugs and drug com­bi­na­tions to car­ry out exe­cu­tions, result­ing in numer­ous pro­longed and painful exe­cu­tions. States are also turn­ing to pre­vi­ous­ly dis­card­ed forms of exe­cu­tion, such as the elec­tric chair and gas cham­ber, in the event that lethal drugs can­not be obtained.

At Issue 

Even though the issues sur­round­ing lethal injec­tion are far from set­tled, states are attempt­ing to cut off debate by con­ceal­ing their exe­cu­tion prac­tices under a veil of secre­cy. Recently passed laws bar the pub­lic from learn­ing the sources of lethal drugs being used, mak­ing it impos­si­ble to judge the reli­a­bil­i­ty of the man­u­fac­tur­er or the pos­si­ble expi­ra­tion of these drugs.

What DPI Offers 

DPI has state-by-state sum­maries of the meth­ods of exe­cu­tion cur­rent­ly in place and the types of drugs used in each exe­cu­tion in the past ten years. A DPI report cov­ers the exe­cu­tion secre­cy laws that have been imposed in many states. Statements from var­i­ous phar­ma­ceu­ti­cal com­pa­nies bar­ring the use of their drugs in exe­cu­tions are also provided.

News & Developments


News

Apr 16, 2025

Tennessee Death Row Prisoners Ask Governor Lee to Halt Scheduled Executions While Courts Assess Constitutionality of New Lethal Injection Protocol

Five vials of clear liquid, varying sizes. One is on its side with a syringe in it.

On April 10, 2025, attor­neys for Tennessee death row pris­on­ers Oscar Smith and Byron Black called on Governor Bill Lee to issue a tem­po­rary reprieve in their cas­es. In their let­ter, the attor­neys ask Gov. Lee​“to pause all exe­cu­tions in Tennessee until March 1, 2026,” to per­mit a pend­ing case chal­leng­ing the con­sti­tu­tion­al­i­ty of the state’s new pen­to­bar­bi­tal lethal injec­tion pro­ce­dure to be decid­ed. In late December 2024, the Tennessee Department of Corrections…

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News

Apr 08, 2025

Records Request Reveals Indiana Department of Corrections Spent $900,000 for Lethal Injection Drugs

According to pub­lic records released to the Indiana Capital Chronicle, the Indiana Department of Corrections (IDOC) spent $900,000 on the drugs need­ed to car­ry out the lethal injec­tion exe­cu­tion of Joseph Corcoran in December 2024. The new­ly released record is so high­ly redact­ed that just one line of text appears:​“IDOC shall pay the Contractor the sum of nine hun­dred thou­sand dol­lars ($900,000).” The doc­u­ment does not show how much pen­to­bar­bi­tal was pur­chased, when it…

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News

Mar 25, 2025

Records Show Tennessee Officials Have Spent Nearly $600,000 of Taxpayer Funds for Lethal Injection Drugs Since 2017

According to records request­ed by The Tennessean, between 2017 and 2025 the Tennessee Department of Correction (TDOC) spent near­ly $600,000 of tax­pay­er funds obtain­ing drugs for lethal injec­tion exe­cu­tions. Specific infor­ma­tion about the drugs’ sources and ori­gins remains unknown because of the state’s secre­cy pro­vi­sions. During this time peri­od sev­en exe­cu­tions were car­ried out: five by elec­tro­cu­tion, two by lethal injec­tion. The TDOC ini­tial­ly refused to respond…

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News

Mar 18, 2025

Nine Tennessee Death Row Prisoners Challenge State’s One-Drug Lethal Injection Protocol, Citing High Risk of Torturous Death”

On March 14, 2025, a group of nine death row pris­on­ers in Tennessee filed a law­suit chal­leng­ing the state’s sole use of pen­to­bar­bi­tal in its revised lethal injec­tion pro­to­col, argu­ing it cre­ates a​“high risk of a tor­tur­ous death.” In December 2024, the Tennessee Department of Correction (TDOC) com­plet­ed a mul­ti-year lethal injec­tion pro­to­col review and announced that instead of the pre­vi­ous three-drug pro­to­col, the state would shift to rely on just one drug:…

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Five vials of clear liquid, varying sizes. One is on its side with a syringe in it.

News

Feb 24, 2025

Article of Interest: Cato Institute Fellow Critiques Medical Ethics Double Standard Around Executions

In a February blog post, Cato Institute Senior Fellow Jeffrey A. Singer crit­i­cizes the use of med­ical­ized lethal injec­tion, high­light­ing the dou­ble stan­dard under which pro­ce­dures that med­ical pro­fes­sion­als are eth­i­cal­ly barred from car­ry­ing out are not only allowed, but required, of law enforce­ment per­son­nel.​“A doc­tor who inten­tion­al­ly per­forms cru­el and med­ical­ly unjus­ti­fi­able pro­ce­dures that cause pain and suf­fer­ing could face crim­i­nal charges. If…

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