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Aussie Actor's Death Linked to Unapproved Peptides

The coroner said the actor’s cardiac arrest followed excess doses of CJC1295 and Ipamorelin, and urged tighter federal oversight of unapproved peptides.

  • On Wednesday, Coroner David Ryan ruled that Australian actor Richard Norton's death was "triggered by" the use of unapproved peptides CJC1295 and Ipamorelin, which caused cardiac arrest in March 2025.
  • Dr. Jerzy Muchnicki prescribed the peptides to Norton to treat fatigue and muscle loss, yet the actor later disclosed to a clinic nurse that he had been administering double the prescribed dose.
  • The Medical Board of Australia found Muchnicki's clinical notes "sparse, inadequate and perfunctory," while the Therapeutic Goods Administration had not evaluated the peptides for safety or effectiveness before they were prescribed.
  • Coroner Ryan recommended the Therapeutic Goods Administration "consider whether further restrictions ought to be imposed" on peptides, and the TGA stated it "continues to warn consumers about the risks of unapproved peptides."
  • This marks Australia's first confirmed fatality linked to unapproved peptide use, with surveillance data showing 1,180 emergency department presentations associated with such substances between July 1, 2025, and September 30, 2026.
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Australian stunter and actor Richard Norton, who died in March 2025 at the age of 75, died of cardiac arrest due to an injection of unlicensed peptides, a death that would be a first in Australia.

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ABC Australia broke the news in Ultimo, Australia on Wednesday, October 28, 2026.
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