Coroner Links Actor Richard Norton's Death to Peptide Injection

Australian actor and martial artist Richard Norton died following a severe allergic reaction and cardiac arrest linked to an injection of unapproved peptides, a coroner has found. Norton, known for his work in films such as "Mad Max: Fury Road" and his collaborations with action stars like Jackie Chan and Chuck Norris, passed away at Melbourne's Alfred Hospital on March 30, 2025, at the age of 75.

In findings dated Oct. 28, Coroner David Ryan concluded that Norton's death was triggered by an injection of the peptides CJC-1295 and ipamorelin. The treatment had been prescribed by Dr. Jerzy Muchnicki to help alleviate shoulder pain, fatigue, and muscle loss. However, the coroner's report noted that Norton had been taking amounts exceeding the prescribed instructions.

Two days before his death, Norton informed a nurse that he had been taking double the prescribed dose. According to the coroner's findings, Norton suffered an anaphylactic reaction after an evening injection, which quickly led to a cardiac arrest. The report also identified asthma and hypertrophic cardiomyopathy as contributing factors to his death.

Coroner Ryan criticized the prescribing physician for approving a replacement vial without checking clinical records or confirming proper usage after Norton reported misusing the medication. Dr. Muchnicki reportedly accepted accountability, apologized for errors in judgment, and stated he would no longer prescribe peptides. While Norton signed a consent form acknowledging the experimental nature of the treatment and listing anaphylaxis as a potential risk, the coroner questioned whether such substances should be available for general medical practice given unknown safety risks.

The coroner recommended that Australia's Therapeutic Goods Administration (TGA) review the benefits and safety risks of such peptides and consider implementing tighter restrictions. The TGA has previously warned that many peptide products marketed online for weight loss, muscle growth, and anti-aging lack proper safety assessments, labeling guarantees, and manufacturing standards.

Peptides are short chains of amino acids that perform essential bodily functions, such as insulin regulating blood sugar. While certain peptide-based medications are approved by regulatory bodies for specific conditions, many fitness and wellness-oriented peptides remain unapproved and largely unstudied in humans.

Norton enjoyed a prolific career spanning more than 80 films as an actor, stuntman, and fight coordinator, working alongside Hollywood A-listers and serving as a martial arts trainer and bodyguard. His death has drawn renewed international scrutiny to the rising popularity of unapproved peptide treatments within the broader wellness community.