Here is the research I found on recent shooters regarding psychiatric/pschotropic medications. I find it interesting how specific searches are not turning up toxicology reports for the majority of shooters.
Chris Harper-Mercer (2015 Umpqua Community College, OR; 9 dead, 9 wounded). Diagnosed Asperger's, history mental illness, attended school for teens with emotional disabilities (Switzer Learning Center in Torrance, CA), discharged from Army after 5 weeks in 2008 (??? timeline does not match- claims he graduated from Switzer in 2009 but Army did run a GED program at the time which could explain this), institutionalized in psychiatric hospital after failing to take medication, evidence of at least 5 psychiatric/psychptropic medications per FB post ( posted under "lithium love").
Aaron Ray Ybarra (2014 Seattle Pacific University; 1 dead, 2 wounded before being stopped by student w/pepper spray). Treated for mental illness and prescribed psychotropic drugs (Prozac and Risperdal) but off medications due to loss of insurance.
Adam Lanza (2012, Sandy Hook Elementary, CT. 27 dead). Asperger's. Toxicology report showed no anti-psychotic medications but was prescribed Celexa (anti-depressant. Used Lexapro for brief period as teen. Was prescribed Fanapt. At the time, father was expected to testify before U.S. Senate in the LIBOR scandal.
Cho Seung-Hui (2007, Virginia Tech, 34 dead). Hospitalized at psychiatric hospital. FOIA of toxicology and autopsy reports DENIED by Virginia ME but later released by family in 2009. Wikipedia lists no drugs in toxicology report. Mental health records list depression, panic episodes, self-destructive behavior, anxiety disorder. Some reports indicate Prozac prescribed prior to attack.
Dylann Roof. Suboxone (narcotic).
Bradley Stone (2014 murder of ex-wife and family). Mental health issues. Suicide by Doing on depressants, anti-depressants and schizophrenia medications. Former USMC.
Jose Reyes (Nevada middle school shooting) excluded due to Prozac prescription only 3 days prior.
Aaron Alexis (2013, Navy Yard shooter, 12 killed). Trazadone prescribed by VA.
James Holmes (2012, Aurora, CO movie theater, 12 killed, 58 wounded). Psychiatrist Dr. Lynne Fenton claims he stopped treatment and was threatening her. Sedatives, clonazepam, and sertraline (generic form of Zoloft) in apartment.
Steven Kazmierczak (2008, Northern Illinois University, 5 dead, 21 wounded). History of psychiatric issues. Prescribed Xanax, Ambient and Prozac. Prozac ceased 3 weeks prior to shooting.
>Thresholds patient??? Anthony M. Zipple, CEO (then but now it is Mark Ishaug) of Thresholds (psychiatric rehabilitation organization based in Chicago) articles.chicagotribune.com/2008-03-07/news/0803070224_1_grand-jury-niu-toxicology
Thresholds might be worth digging- Huffpo article written by Mark Ishaug (same person Thresholds CEO) on AIDS as the President and CEO of AIDS United (2009): www.huffingtonpost.com/mark-ishaug/high-hopes-await-obama-in_b_147226.html
>Ishaug left AIDS United in 2012 (joined 2011) to lead Thresholds in Chicago www.windycitymediagroup.com/lgbt/Mark-Ishaug-leaves-AIDS-United-to-lead-Thresholds-in-Chicago/35874.html
>previous President and CEO of AIDS Foundation Chicago (joined 1991 as public affairs officer and ended up president/CEO in 1998).
>AIDS United launched January 2011 from merger of two leading national HIV/AIDS organizations- the National AIDS Fund and AIDS Action
Thresholds and Ishaug caught my eye- going to continue digging there