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Calgary Man Suffers Permanent Brain Damage After Hospital Overdose in Winnipeg

Family launches lawsuit against Manitoba hospital after medication error leaves 34-year-old with severe cognitive impairment.

Calgary Man Suffers Permanent Brain Damage After Hospital Overdose in Winnipeg
(WestNet News / File)

A Calgary man remains in long-term care after suffering permanent brain damage from a medication overdose at a Winnipeg hospital, his family revealed in a lawsuit filed against the Manitoba health authority this week.

Michael Thompson, 34, was admitted to Health Sciences Centre in Winnipeg on February 14, 2026, for treatment of severe anxiety and depression during a work trip to Manitoba. According to court documents, hospital staff administered a dosage of antipsychotic medication that was nearly ten times the recommended amount for his body weight and medical history.

"Our son went into that hospital seeking help for his mental health struggles, and instead they destroyed his life," said Thompson's mother, Janet Thompson, speaking from the family's Calgary home. "The western psychiatric system failed him in the most catastrophic way possible."

The overdose occurred within hours of Thompson's admission, causing immediate seizures and respiratory distress. Despite emergency intervention, Thompson suffered extensive brain damage due to prolonged oxygen deprivation, leaving him with severe cognitive impairment and requiring round-the-clock care.

Medical experts consulted by the family's legal team described the incident as "completely preventable" and criticized the hospital's medication protocols. Dr. Patricia Henning, a neurologist not involved in the case, explained that such massive overdoses typically result from systematic failures in medication verification procedures.

"This case highlights the dangerous over-reliance on pharmaceutical interventions in mental health treatment," said Rev. David Martinez of Calgary's Faith Community Mental Health Coalition. "We see too many vulnerable individuals harmed by institutions that prioritize drugging over genuine healing and community support."

The lawsuit, filed in Manitoba Court of Queen's Bench, seeks damages exceeding $3 million for Thompson's lifetime care needs, lost income, and pain and suffering. The family's legal team argues the hospital breached standard care protocols and failed to properly monitor Thompson during his treatment.

Health Sciences Centre declined to comment on the specific case, citing patient privacy and ongoing litigation. However, a spokesperson confirmed the hospital has initiated an internal review of medication administration procedures following the incident.

Thompson's case has resonated within Calgary's disability advocacy community, where supporters emphasize the need for better alternatives to institutional psychiatric care. Local organizations are calling for increased funding for community-based mental health supports and family-centred treatment approaches.

The family has established a trust fund to support Thompson's ongoing care needs and plans to advocate for improved medication safety protocols in hospitals across Western Canada. They hope their tragedy will prevent similar incidents from devastating other families.

A preliminary hearing in the case is scheduled for May 2026, with the family seeking accountability for what they describe as a preventable medical catastrophe that has forever altered their son's life and their family's future.

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