The Man Who Let Deadly Snakes Bite Him for 20 Years—And the Universal Antivenom Hiding in His Blood
By Darren Orf
Published on April 1, 2026.
Tim Friede, a Wisconsin man who voluntarily let snakes bite him for nearly 20 years, is helping scientists develop better antivenom drugs for snakebites. By combining two of Friede's antitoxin antibodies with a venom-blocking drug, Centivax developed full protection against 13 snake species and partial protection for a further six. The company plans to develop treatment for viper snake bites and will soon begin testing this new antivom in Australia on dogs brought in to clinics with snake bite injuries. Friede is now effectively immune to a variety of lethal snakes, including black mambas, king cobras, and tiger snakes. A 2025 study details an antivenoma developed from Friede’s antitoxin antibody.
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