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Associated Press

Scientists reported today that they have figured out how the popular illicit stimulant Captagon works and that they may have a way to combat its effects.

  • Captagon or fenethylline is popular in Saudi Arabia and throughout the Gulf (where counterfeit pills also abound).
  • There have been reports of the "Jihadi pill" being used by ISIS fighters as a performance stimulator—though that has been questioned.
  • The drug was first used in the 1960s to treat attention deficit hyperactivity disorder and narcolepsy but became illegal in most countries, including the U.S., in the 1980s after its addictiveness became apparent.

How it works: When ingested, fenethylline is broken down to the stimulant amphetamine and theophylline (a caffeine-like substance that relaxes the muscles around the lungs and is used to treat respiratory diseases). It was unclear how exactly the drug works in the body. Kim Janda and his colleagues from Scripps Research Institute found the combination of theophylline and amphetamine greatly enhances amphetamine's psychoactive properties.

"This drug is much more dangerous than was previously thought in terms of its overall psychoactive properties. We need greater awareness of the issues and its abuse effects" Janda said in a press conference.

What they did: The researchers made fenethylline in the lab (producing it is relatively easy and it's believed to be a revenue source for ISIS). They then vaccinated mice against the different components of fenethylline, administered the drug and determined how each substance affected their vigilance and movement, as well as the drug's uptake by the brain and body.

"The two drugs act synergistically and individually to hit their targets at the same time and it boosts the overall stimulant effect. What we see with the combination of these two drugs is we get a faster onset of the amphetamine properties and much stronger than what you would [normally] see — that was completely unexpected and unknown. It really explains why this drug is being so heavily abused," says Janda.

Janda, who is working on a vaccine for heroin, says the initial intent of the study wasn't a vaccine for fenethylline but that the study vaccine's components could be adjusted if there was interest in developing a vaccine for humans.

A term to know: Pharmacoterrorism refers to drugs originally produced for therapeutic benefit being abused in terror attacks for morale building or hypervigilance or to therapeutic drugs being weaponized.

Important side note: The researchers say their vaccine approach could be used to better understand how other drugs affect the brain. "[Natural products, anti-depressants, anti-psychotics, anti-seizure and other complex drugs] typically have multiple targets and figuring out how they interact with those targets is challenging. This approach can be used to figure out what effects are useful and helpful, and which are toxic or potentially link with abuse liabilities," says Janda.

Go deeper

Updated 56 mins ago - World

HRW: Over 100 former Afghan security members dead or missing under Taliban rule

Members of the Taliban movement patrol Kabul's airport in September. Photo: Valery Sharifulin/TASS via Getty Images

The Taliban have "killed or forcibly disappeared" over 100 former members of Afghanistan's security forces since the group took power in August, a Human Rights Watch report published Tuesday found.

Why it matters: Former military members and officials from the ousted government, activists and other Taliban critics are facing peril amid executions driven by revenge — despite Taliban promises of an "amnesty" with no retributions, notes the New York Times, which first reported the news.

4 hours ago - World

Barbados becomes a republic, replacing U.K. queen with president

Combination images of Dame Sandra Mason, president of Barbados, and Britain's Prince Charles at her swearing-in ceremony in Bridgetown, Barbados, late Monday.

Barbados officially became a republic at midnight local time after Dame Sandra Mason was sworn in as the Caribbean nation's first president in a ceremony attended by the United Kingdom's Prince Charles.

Why it matters: Mason replaced Britain's Queen Elizabeth as head of state Tuesday — removing the country's final remaining colonial tie to the U.K. almost 400 years after the first British ships arrived in Barbados.

Right-wingers making McCarthy sweat for future Speaker post

House Minority Leader Kevin McCarthy stands with his Republican colleagues outside the House on Nov. 17. Photo: Stefani Reynolds/Bloomberg via Getty Images

Right-wing elements in the Republican Party are complicating House Minority Leader Kevin McCarthy's attempts to become the next speaker of the House should the GOP take back the majority in 2022.

Why it matters: While McCarthy has worked carefully to build trust among the conservatives who tanked his chances at clinching the speakership in 2015, they're still circling ahead of the next Speaker vote in January 2023.

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