At least 35 acts of school-related acts of violence, including mass school shootings, have been committed by individuals taking or withdrawing from psychiatric drugs documented in 27 drug regulatory agency warnings to cause mania, psychosis, hostility, aggression and homicidal ideation.

Fact: At least 36 school shootings and/or school-related acts of violence have been committed by those taking orwithdrawing from psychiatric drugs resulting in 172 wounded and 80 killed (in other school shootings, information about their drug use was never made public—neither confirming or refuting if they were under the influence of prescribed drugs).  The most important fact about this list, is that these are only cases where the information about their psychiatric drug use was made public. (See full list below)

The below list includes individuals documented to have been under the influence of psychiatric drugs and not only includes mass shootings, but the use of knives, swords and bombs.  27 international drug regulatory agency warnings cite side effects including mania, violence, psychosis and even homicidal ideation.

1. Austin, Texas – May 1, 2017: Kendrex J. White, 21, stabbed four people with a machete-like hunting knife at the University of Texas, killing one and wounding three. The stabbings occurred within a one-block area as the attacker “calmly walked around the plaza,” according to the chief of police. After he was arrested, White told police he did not remember the attack. The police department said that White had recently been involuntarily committed in another city, and county records showed that he had been arrested and charged with a DWI (Driving While Intoxicated) on April 4, 2017. When an officer spoke to him, White said he had taken two “happy pills,” listed as the antidepressant Zoloft.
2. Tallahassee, Florida – November 20, 2014: 31-year-old Myron May, a Florida State University alum, opened fire in the school’s library, wounding three before he was shot and killed by police. ABC Action News found a half-filled prescription for the antianxiety drug Hydroxyzine in his apartment after the shooting. In addition, according to May’s friends, he had seen a psychologist and had been prescribed the antidepressant Wellbutrin and the ADHD drug Vyvanse. He also checked himself in to a mental health center called Mesilla Valley Hospital around September of 2014. Shortly after this, his friends discovered the antipsychotic Seroquel among his prescriptions.
3. Seattle, Washington – June 5, 2014: 26-year-old Aaron Ybarra opened fire with a shotgun at Seattle Pacific University, killing one student and wounding two others. Ybarra planned to kill as many people as possible and then kill himself. In 2012, Ybarra reported that he had been prescribed the antidepressant Prozac and antipsychotic Risperdal. A report from his counselor in December of 2013 said that he was taking Prozac at the time and planned to continue to meet with his psychiatrist and therapist as needed. His lawyer also said that Ybarra had a long history of mental health issues for which he was taking prescribed drugs for at the time of the shooting.
4. Milford, Connecticut – April 25, 2014: 16-year-old Chris Plaskon stabbed Maren Sanchez, also 16, to death in a stairwell at Jonathan Law High School after she turned down his prom invitation. According to classmates and a former close friend, Chris was taking drugs for ADHD.
5. Sparks, Nevada – October 21, 2013: 12-year-old Jose Reyes opened fire at Sparks Middle School, killing a teacher and wounding two classmates before committing suicide. The investigation revealed that he had been seeing a psychiatrist and had a generic version of Prozac (fluoxetine) in his system at the time of death.
6. St. Louis, Missouri – January 15, 2013: 34-year-old Sean Johnson walked onto the Stevens Institute of Business & Arts campus and shot the school’s financial aid director once in the chest, then shot himself in the torso. Johnson had been taking prescribed drugs for an undisclosed mental illness.
7. Snohomish County, Washington – October 24, 2011: A 15-year-old girl went to Snohomish High School where police alleged that she stabbed a girl as many as 25 times just before the start of school, and then stabbed another girl who tried to help her injured friend. Prior to the attack the girl had been taking “medication” and seeing a psychiatrist. Court documents said the girl was being treated for depression.
8. Planoise, France – December 13, 2010: A 17-year-old youth held twenty pre-school children and their teacher hostage for hours at Charles Fourier preschool.  The teen was reported to be on “medication for depression”.  He took a classroom hostage with two swords. Eventually, all the children and the teacher were released safely.
9. Myrtle Beach, South Carolina – September 21, 2011: 14-year-old Christian Helms had two pipe bombs in his backpack, when he shot and wounded Socastee High School’s “resource” (police) officer. However the officer was able to stop the student before he could do anything further. Evidence showed that he was planning an attack similar to the Columbine High School shooting and had even made a list of who he was going to kill. Helms had been taking drugs for attention deficit hyperactivity disorder and depression.
10. Huntsville, Alabama – February 5, 2010: 15-year-old Hammad Memon shot and killed another Discover Middle School student Todd Brown.  Memon had a history for being treated for ADHD and depression.  He was taking the antidepressant Zoloft and “other drugs for the conditions.” He had been seeing a psychiatrist and psychologist.
11. Kauhajoki, Finland – September 23, 2008: 22-year-old culinary student Matti Saari shot and killed 9 students and a teacher, and wounded another student, before killing himself.  Saari was taking an SSRI and alprazolam (Xanax). He was also seeing a psychologist.
12. Fresno, California – April 24, 2008: 17-year-old Jesus “Jesse” Carrizales attacked the Fresno high school’s officer, hitting him in the head with a baseball bat.  After knocking the officer down, the officer shot Carrizales in self-defense, killing him.  Carrizales had been prescribed Lexapro and Geodon, and his autopsy showed that he had a high dose of the antidepressant Lexapro in his blood that could have caused him to be paranoid, according to the coroner.
13. DeKalb, Illinois – February 14, 2008: 27-year-old Steven Kazmierczak shot and killed five people and wounded 21 others before killing himself in a Northern Illinois University auditorium. According to his girlfriend, he had recently been taking the prescribed drugs Prozac, Xanax and Ambien but had stopped taking Prozac three weeks before the shooting. Toxicology results showed that he still had trace amount of Xanax in his system. He had been seeing a psychiatrist.
14. Jokela, Finland – November 7, 2007: 18-year-old Finnish gunman Pekka-Eric Auvinen had been taking antidepressants before he killed eight people and wounded a dozen more at Jokela High School in southern Finland, then committed suicide.
15. Texas – November 7, 2007: 17-year-old Felicia McMillan returned to her former Robert E. Lee High School campus and stabbed a male student and wounded the principle with a knife.  McMillan had been on drugs for depression, and had just taken them the night before the incident.
16. Cleveland, Ohio – October 10, 2007: 14-year-old Asa Coon stormed through his school with a gun in each hand, shooting and wounding four before taking his own life. Coon had been prescribed the antidepressant Trazodone.
17. Sudbury, Massachusetts – January 19, 2007: 16-year-old John Odgren stabbed another student to death with a large kitchen knife in a boy’s bathroom at Lincoln-Sudbury Regional High School. In court his father testified that Odgren was prescribed the drug Ritalin.
18. North Vernon, Indiana – December 4, 2006: 16-year-old Travis Roberson stabbed another Jennings County High School student in the neck, nearly severing an artery. Roberson was in withdrawal from Wellbutrin, which he had stopped taking days before the attack.
19. Hillsborough, North Carolina – August 30, 2006: 19-year-old Alvaro Rafael Castillo shot and killed his father, then drove to Orange High School where he opened fire. Two students were injured in the shooting, which ended when school personnel tackled him. His mother said he was on drugs for depression.
20. Chapel Hill, North Carolina – April 24, 2006: 17-year-old William Barrett Foster took a shotgun to school and took a teacher and a fellow student hostage at East Chapel Hill High School. After being talked out of shooting the hostages, Foster fired two shots through a classroom window before fleeing the school on foot. Foster’s father testified that his son had stopped taking his antidepressants and antipsychotic drugs without telling him.
21. Red Lake, Minnesota – March 21, 2005: 16-year-old Jeff Weise, on Prozac, shot and killed his grandfather and his grandfather’s girlfriend, then went to his school on the Red Lake Indian Reservation where he shot dead 5 students, a security guard, and a teacher, and wounded 7 before killing himself.
22. Greenbush, New York – February 9, 2004: 16-year-old Jon Romano strolled into his high school in east Greenbush and opened fire with a shotgun. Special education teacher Michael Bennett was hit in the leg. Romano had been taking the antianxiety drug Xanax. He had previously spent time in a psychiatric care facility.
23. Red Lion, Pennsylvania – February 2, 2001: 56-year-old William Michael Stankewicz entered North Hopewell-Winterstown Elementary School with a machete, leaving three adults and 11 children injured. Stankewicz was taking four different drugs for depression and anxiety weeks before the attacks.
24. Ikeda, Japan – June 8, 2001: 37-year-old Mamoru Takuma, wielding a 6-inch knife, slipped into an elementary school and stabbed eight first- and second-graders to death while wounding at least 15 other pupils and teachers. He then turned the knife on himself but suffered only superficial wounds. He later told interrogators that before the attack he had taken 10 times his normal dose of antidepressants. Police said he had been under the care of a psychiatrist.
25. Wahluke, Washington – April 10, 2001: Sixteen-year-old Cory Baadsgaard took a rifle to his high school and held 23 classmates and a teacher hostage. Three weeks earlier, his doctor had switched Baadsgaard’s prescription from Paxil to Effexor. The morning of the incident, his dosage of Effexor had been increased. Baadsgaard said he had no memory of the incident.
26. El Cajon, California – March 22, 2001: 18-year-old Jason Hoffman, on the antidepressants Celexa and Effexor, opened fire on his classmates, wounding three students and two teachers at Granite Hills High School. He had been seeing a psychiatrist before the shooting.
27. Williamsport, Pennsylvania – March 7, 2001: 14-year-old Elizabeth Bush was taking the antidepressant Prozac when she shot at fellow students, wounding one.
28. Oxnard, California – January 10, 2001: 17-year-old Richard Lopez went to Hueneme High School with a gun and shot twice at a car in the school’s parking lot before taking a female student hostage.  Lopez was eventually killed by a SWAT officer.  He had been prescribed Prozac, Paxil and “drugs that helped him go to sleep.”
29. Conyers, Georgia – May 20, 1999: 15-year-old T.J. Solomon was being treated with the stimulant Ritalin when he opened fire on and wounded six of his classmates.
30. Columbine, Colorado – April 20, 1999: 18-year-old Eric Harris and his accomplice, Dylan Klebold, killed 12 students and a teacher and wounded 26 others before killing themselves. Harris was on the antidepressant Luvox.  Klebold’s medical records remain sealed. Both shooters had been in anger-management classes and had undergone counseling.  Harris had been seeing a psychiatrist before the shooting.
31. Notus, Idaho – April 16, 1999: 15-year-old Shawn Cooper fired two shotgun rounds in his school, injuring one student. He was taking a prescribed antidepressant and Ritalin.
32. Springfield, Oregon – May 21, 1998: 15-year-old Kip Kinkel murdered his parents and then proceeded to school where he opened fire on students in the cafeteria, killing two and wounding 25. Kinkel had been taking the antidepressant Prozac. Kinkel had been attending “anger control classes” and had previously been under the care of a psychologist.
33. Blackville, South Carolina – October 12, 1995: 15-year-old Toby R. Sincino slipped into the Blackville-Hilda High School’s rear entrance, where he shot two Blackville-Hilda High School teachers, killing one. Then Toby killed himself moments later. His aunt, Carolyn McCreary, said he had been undergoing counseling with the Department of Mental Health and was taking Zoloft for emotional problems.
34. Chelsea, Michigan – December 16, 1993: 39-year-old chemistry teacher Stephen Leith, facing a disciplinary matter at Chelsea High School, shot Superintendent Joseph Piasecki to death, shot Principal Ron Mead in the leg, and slightly wounded journalism teacher Phil Jones. Leith was taking Prozac and had been seeing a psychiatrist.
35. Houston, Texas – September 18, 1992: 44-year-old Calvin Charles Bell, reportedly upset about his second-grader’s progress report, appeared in the principal’s office of Piney Point Elementary School. Bell fired a gun in the school, and eventually wounded two officers before surrendering. Relatives told police on Friday that Bell was an unemployed Vietnam veteran and had been taking anti-depressants.
36. Winnetka, Illinois – 20 May 1988: 30-year-old Laurie Wasserman Dann walked into a second grade classroom at Hubbard Woods School in Winnetka, Illinois carrying three pistols and began shooting children, killing an eight-year-old boy, and wounding five others before fleeing. She entered a nearby house where she shot and wounded a 20-year-old man before killing herself. Dann had been seeing a psychiatrist and subsequent blood tests revealed that at the time of the killings, she was taking the antidepressant Anafranil.