The term “snake oil” traces back to a real product that actually worked. Chinese laborers brought oil derived from water snakes to the United States in the 1840s, using it as a traditional remedy for joint pain. The phrase only became synonymous with fraud decades later, after American hucksters sold fake versions that contained no snake oil at all.
The Real Snake Oil From China
In the 1840s, thousands of Chinese laborers arrived in the United States to help build the Transcontinental Railroad. They brought with them oil from the Chinese water snake (a species of sea krait), which had been used in traditional Chinese medicine for centuries as an anti-inflammatory treatment for arthritis, bursitis, and other joint conditions. After grueling days of physical labor, these workers likely shared the oil with fellow railroad builders as a remedy for aches and soreness.
The remedy had a genuine scientific basis. Chinese water snake oil is rich in omega-3 fatty acids, the same type of compounds found in salmon and other cold-water fish that reduce inflammation in the body. This is why it could provide real relief for swollen, painful joints. The oil wasn’t a miracle cure, but it wasn’t a scam either.
Clark Stanley, the Rattlesnake King
Word of snake oil’s healing properties spread through the American West, and it eventually caught the attention of a former cowboy named Clark Stanley. Stanley claimed he had learned about the power of rattlesnake oil not from Chinese workers but from Hopi medicine men. He never publicly mentioned Chinese snake oil at all.
Stanley made himself famous at the 1893 World’s Columbian Exposition in Chicago with a showman’s flair for spectacle. In front of a gathered crowd, he reached into a sack, pulled out a live rattlesnake, sliced it open, and plunged it into boiling water. When fat rose to the surface, he skimmed it off and used it right there to create “Clark Stanley’s Snake Oil Liniment,” which onlookers eagerly bought on the spot. Over the course of the exposition, he killed dozens of rattlesnakes during these presentations, and his product became a popular draw.
There was a problem with Stanley’s version beyond the theatrics. Even if he had been using real rattlesnake oil, it contains a lower concentration of omega-3 fatty acids than Chinese water snake oil. The American rattlesnake simply wasn’t the same animal, and its oil wasn’t as effective. But as it turned out, what Stanley was actually selling was far worse than rattlesnake oil.
The 1917 Investigation That Exposed the Fraud
By the early 1900s, the U.S. government had started cracking down on fraudulent medicines under the Pure Food and Drug Act. In 1917, federal investigators seized a shipment of Stanley’s Snake Oil Liniment and analyzed its contents. They found no trace of snake in any form. The product was mineral oil, beef fat, red pepper, and turpentine.
Stanley was charged with misbranding his product. He entered a plea of nolo contendere (essentially not contesting the charges) and was fined $20, a slap on the wrist even by 1916 standards. But the case drew public attention, and the idea that “snake oil” was a synonym for quackery took root in the American vocabulary.
How a Real Remedy Became a Metaphor for Fraud
The path from legitimate medicine to insult followed a specific pattern. Chinese water snake oil was a genuine anti-inflammatory with real active compounds. American entrepreneurs saw an opportunity, swapped in cheaper ingredients, and sold the name without the substance. When the fraud was exposed, the public didn’t distinguish between the original and the fake. The term “snake oil” became shorthand for any product sold with exaggerated or fabricated claims, and a “snake oil salesman” became the archetypal con artist peddling worthless cures.
The irony is that the original product was the opposite of what the phrase now implies. Chinese water snake oil had been used medicinally for centuries and contained compounds that modern science recognizes as genuinely anti-inflammatory. What made “snake oil” a dirty word wasn’t the oil itself. It was an American showman who put on a good performance, slapped a familiar name on a bottle of beef fat and turpentine, and bet that nobody would check what was actually inside.