When you think of the Cold War, you might picture spy planes and coded telegrams, but the CIA was also busy concocting psychedelic schemes. In this roundup we reveal 10 insane ways the agency turned LSD into a covert weapon, testing it on agents, civilians, animals, and even entire towns.
10 Insane Ways the CIA Experimented With LSD
10 Agents Slipped Each Other LSD
In the infancy of MK‑ULTRA, the program was a low‑key affair: willing operatives took measured doses of LSD, logged their hallucinations, and tried to map the drug’s mind‑bending potential. But the experiment quickly escalated. Every agent who signed up also agreed to be surprised by an unexpected dose at any moment, turning the office into a giant, jittery chemistry lab.
Spiking each other’s coffee became an unofficial “occupational hazard,” a joke that turned dark when a 1954 staff party required a formal memo reminding everyone not to lace the punch. Even then, paranoia ran high—one operative allegedly clutched his own wine bottle like a life preserver, refusing to set it down for a second.
By the end of the decade, the practice had morphed into a full‑blown culture of covert dosing, where a sip of espresso could mean a trip to another dimension, and trust among colleagues was as fragile as a glass beaker.
9 A Magician Taught The CIA Sleight Of Hand
When the agency realized they needed a bigger audience, they hired a professional illusionist. John Mulholland, a seasoned magician, drafted a manual that turned ordinary drink‑pouring into a covert art form. He showed agents how to create a dazzling distraction—like lighting a match—while slipping a tiny LSD tablet into a glass.
The guide even suggested clever tricks such as gluing a pill to a matchbook so it would tumble into a cup unnoticed. Although the foreword claimed these tactics were never employed, declassified documents later confirmed that Mulholland’s sleight‑of‑hand was a cornerstone of MK‑ULTRA’s covert operations.
In essence, the CIA turned a circus act into a weapon, teaching operatives to blend illusion with chemistry to manipulate unsuspecting targets.
8 The CIA Hired Prostitutes To Drug Their Clients
Operation Midnight Climax took the CIA’s curiosity to a seedy new level. The agency set up a brothel, paid women $100 per client, and lured unsuspecting men into a private room. Once inside, the men were offered LSD‑spiked drinks and escorted to a bed positioned next to a one‑way mirror.
Agents watched the scene unfold from the other side, hoping to learn whether a combination of sex and psychedelics could coerce information from a target. While the official line claimed the experiment was about training prostitutes as covert operatives, internal memos reveal a more hedonistic motive: a “fun, fun, fun” environment where agents could voyeuristically observe the effects of LSD on human behavior.
The project painted a lurid picture of Cold War espionage, where the line between scientific inquiry and outright exploitation blurred beyond recognition.
7 Mental Patients Were Drugged Into Comas
Across the border in Canada, the CIA’s reach extended into university labs. McGill professor Dr. Hebb first demonstrated how sensory deprivation and audio loops could reshape belief systems, convincing atheist students that a seven‑day creation narrative was true. Building on this, Dr. Cameron took a darker turn.
Cameron administered a cocktail of psychoactive drugs to institutionalized patients, inducing a ten‑day coma. When they awoke, he intensified their treatment with electro‑shock therapy at a rate nearly five times higher than standard practice, hoping to “depattern” and then rewrite their entire worldview.
These brutal methods later appeared in CIA interrogation manuals, suggesting that the agency was eager to appropriate any technique that could erase and rebuild a mind, no matter how ethically dubious.
6 A Man Was Kept High For 174 Days
Some MK‑ULTRA trials simply asked, “How long can a person stay tripped?” A group of African‑American volunteers with prior drug experience were dosed daily for 77 straight days, with researchers escalating the amount each time tolerance built.
The record‑breaking case involved a Kentucky mental‑patient who was administered LSD so frequently that he allegedly remained under its influence for a staggering 174 days. After the study concluded, the man appeared to live in a perpetual acid trip, his perception forever altered.
This extreme experiment underscored the agency’s willingness to push human limits, blurring the boundary between scientific curiosity and cruel abuse.
5 They Gave LSD To A Cat
The CIA didn’t limit its psychedelic curiosity to humans. In a documented experiment, a sober cat was placed in a cage with a live mouse. Predictably, the feline pounced and devoured the prey.
When the cat was later dosed with LSD, its behavior flipped dramatically. Instead of hunting, the high cat became terrified of the mouse, scrambling to the corner of its enclosure whenever the tiny creature appeared, as if the drug turned predator into prey.
The footage of this bizarre reversal was circulated to the Army as proof of the program’s breadth, showing that even domestic animals were not exempt from the agency’s mind‑altering ambitions.
4 They Overdosed An Elephant
In 1962, researchers at the University of Oklahoma, collaborating with the CIA, attempted to trigger violent behavior in a 3,200‑kilogram elephant by injecting a massive 297‑milligram dose of LSD via a dart.
The result was far from a rampaging beast. The elephant let out a mournful trumpet, collapsed, soiled itself, and then suffered a prolonged seizure that lasted an hour and forty minutes before it finally died, despite attempts to revive it with 2,800 milligrams of Sparine poured into its ear.
This tragic episode highlighted the agency’s reckless experimentation, proving that even the largest mammals could not survive the psychedelic onslaught.
3 They Drugged A French Town
In 1951, a small French community was besieged by bizarre hallucinations: one man believed snakes were devouring him and leapt into a river to drown; another swore his heart was crawling out of his feet; yet others reported red flowers sprouting across their skin. Hospitals filled, and at least five residents died.
The official explanation blamed ergot‑contaminated bread, a known psychedelic mold. However, investigative journalist H.P. Albarelli Jr. claimed insider CIA sources confirmed the bakery’s loaves were deliberately laced with LSD, turning an entire town into an accidental drug trial.
Although the allegation sparked fierce debate and accusations of fabrication, the CIA’s refusal to deny the other items on this list lends weight to the possibility that the agency was behind this tragic, town‑wide trip.
2 They Tried To Drug Fidel Castro
The CIA’s obsession with Cuban leader Fidel Castro extended beyond assassination attempts. One outlandish scheme aimed to surreptitiously dose Castro with LSD during a televised speech, hoping the hallucinogen would cause him to lose composure on live television.
When the plan was deemed too risky, the agency shifted focus to outright murder, but the notion of drugging world leaders resurfaced later, with discussions about applying the same tactic to Egyptian President Gamal Abdel Nasser.
This episode illustrates the lengths to which the CIA would go—using psychedelic sabotage as a political weapon—even if the idea never materialized.
1 They Only Stopped Because They Found A Better Drug
In 1962, a new regulation forced CIA operatives to obtain FDA approval before administering LSD, effectively curbing the agency’s most blatant psychedelic experiments. While the formal program, MK‑ULTRA, lingered for another decade, the agency’s appetite for mind‑altering chemicals shifted.
Researchers turned their attention to a more potent agent known as BZ, abandoning LSD for what they perceived as a stronger, more controllable tool. The change didn’t make the program more ethical; instead, it simply swapped one dangerous substance for another.
Ironically, some MK‑ULTRA subjects later influenced pivotal cultural moments: one participant sparked the Electric Kool‑Aid Acid Test, fueling the 1960s hippie movement, while another became the notorious Unabomber. The program’s legacy, therefore, is a tangled web of unintended consequences.
+ Further Reading
Shockingly, this list scratches only the surface of the CIA’s darkest deeds. For more chilling revelations, explore these archives:
- 10 Dirty Secret CIA Operations
- 10 Secret CIA Prisons You Do Not Want To Visit
- 10 Real Victims Of The CIA’s MK‑ULTRA Program
- 10 Things You Should Know About The CIA’s Torture Program
Delve deeper, and you’ll find that the agency’s shadowy history extends far beyond the psychedelic experiments highlighted here.