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Prescriptions for amphetamine stimulants to treat ADHD have increased significantly in recent years, particularly during the pandemic. Unfortunately, high doses of stimulants like Adderall can increase the risk of psychosis or mania by more than fivefold, a new study finds. Patients had a nearly 63% increased risk of psychosis or mania if they took any prescription amphetamine within the past month, researchers reported Sept. 12 in the American Journal of Psychiatry. Those on heavy doses of amphetamines were at even greater peril of a psychotic episode, with an 81% increased risk, results show. The highest risk occurred in patients taking 30 milligrams or more of dextroamphetamine, which corresponds to 40 milligrams of Adderall, the study says. “Stimulant medications don’t have an upper dose limit on their labels, and our results show that it is clear that dose is a factor in psychosis risk and should be a chief consideration when prescribing stimulants,” said lead investigator Dr. Lauren Moran, a pharmacoepidemiology researcher at McLean Hospital in Belmont, Mass. “This is a rare but serious side effect that should be monitored by both patients and their doctors whenever these medications are prescribed,” Moran added. Moran said she pursued this study based on her experiences as an inpatient psychiatrist. She and her Mclean colleagues would regularly see patients experiencing their first episode of psychosis. Medical records would reveal… read on > read on >