In January 2017, Joe Tippens was certain that he would die of small cell lung cancer.
But then a veterinarian suggested he try something unconventional, to say the least: a drug for dogs.
The medication, fenbendazole, is an anti-worm compound used to treat hookworms, roundworms and other gut parasites in animals, primarily dogs.
In recent years, studies suggesting anti-worm drugs might have cancer-fighting properties have been cropping up in a growing number of journals.
It's far from a proven treatment, but with three months to live and nothing to lose, Joe decided to take a chance on it.