Australian actor and martial arts legend Richard Norton’s death has been linked to experimental peptide injections, according to coronial findings released on October 28, 2026. Victorian coroner David Ryan determined that the 75-year-old suffered a fatal cardiac arrest following an anaphylactic reaction associated with two unapproved peptides, CJC-1295 and ipamorelin. The findings have prompted calls for tighter restrictions on experimental peptide treatments in Australia.
Norton, known for his work in Mad Max: Fury Road and numerous action films, passed away at Melbourne’s Alfred Hospital on March 30, 2025. The investigation revealed that he had been using doctor-prescribed peptide injections to address fatigue, muscle loss and persistent physical discomfort.
What Peptides Was Richard Norton Taking?
Richard Norton had been prescribed CJC-1295 and ipamorelin, two experimental peptides associated with stimulating growth hormone release.
According to the coroner’s findings, Norton approached medical practitioner Dr. Jerzy Muchnicki in March 2025 seeking treatment for fatigue, reduced physical recovery, shoulder pain and declining muscle mass.
The actor had previously undergone reconstructive surgery on both shoulders and experienced ongoing physical discomfort. His doctor discussed the experimental nature of peptide therapy before prescribing the injections on March 19.
Neither substance had been approved by Australia’s Therapeutic Goods Administration for routine therapeutic use.
How Did Richard Norton’s Peptide Treatment Lead to Cardiac Arrest?
The investigation revealed that Norton had been administering more than his prescribed dosage.
On March 28, 2025, he informed a nurse that he had been taking twice the recommended amount of CJC-1295 and ipamorelin. He was advised to follow the prescribed dosage.
Hours later, Norton administered another injection and began feeling unusually hot and flushed before becoming unresponsive.
The coroner concluded that an anaphylactic reaction triggered by the peptide injection led to cardiac arrest. Norton was hospitalized but passed away two days later.
The findings also identified asthma and hypertrophic cardiomyopathy as contributing medical conditions.
What Did the Coroner Say About Unapproved Peptides?
Coroner David Ryan raised serious concerns about the availability of experimental peptides through medical prescriptions.
He recommended that the Therapeutic Goods Administration review their therapeutic benefits, safety risks and current regulatory classification.
The findings suggested considering stronger restrictions, potentially limiting access to clinical trials or other approved experimental settings.
Medical experts also highlighted the lack of sufficient evidence establishing the safety and effectiveness of CJC-1295 and ipamorelin for human treatment.
Was Richard Norton’s Doctor Investigated?
The Medical Board of Australia investigated Dr. Muchnicki following concerns about Norton’s treatment.
An independent expert concluded that the doctor’s clinical care generally met expected standards but criticized his inadequate medical documentation.
The doctor acknowledged the record-keeping shortcomings and received a caution, along with requirements to improve his professional practices.
The investigation did not establish that the prescription itself constituted professional misconduct.
Who Was Richard Norton?
Richard Norton was an Australian martial artist, actor, stunt performer and fight choreographer who built a career spanning several decades.
He worked alongside prominent action stars, including Chuck Norris, and contributed to major Hollywood productions such as Mad Max: Fury Road and Suicide Squad.
Norton was married to Judy Green, who publicly expressed her grief following his passing.
His case has renewed debate about experimental wellness treatments, particularly injectable peptides promoted for muscle recovery, physical performance and anti-aging benefits.
The coroner’s findings now place greater attention on whether Australia’s existing regulations provide sufficient protection against potentially serious complications associated with unapproved peptide products.