Snake oil is absolutely real. Oil extracted from the Chinese water snake contains 20 percent eicosapentaenoic acid (EPA), a type of omega-3 fatty acid your body uses to reduce inflammation. That concentration is higher than salmon, one of the most popular dietary sources of omega-3s, which tops out at about 18 percent. The reason “snake oil” became shorthand for fraud has less to do with the original product and more to do with American con artists who sold fake versions of it in the late 1800s.
The Chinese Water Snake Original
Chinese laborers who came to the United States in the mid-19th century to build the transcontinental railroad brought with them a traditional remedy: oil rendered from the fat of Chinese water snakes. They used it topically to ease joint pain and inflammation, and they shared it with fellow workers. The product had a basis in biochemistry that wouldn’t be confirmed for another century.
A 1989 analysis published in the Western Journal of Medicine broke down the fatty acid composition of Chinese water snake oil and found that 20 percent EPA content. EPA is one of the two omega-3 fatty acids most readily absorbed by the human body, and omega-3s play a well-documented role in reducing inflammation. By comparison, North American rattlesnake oil contains only 8.5 percent EPA, less than half the concentration. So even if an American seller had used real snake oil from a local species, it would have been a far weaker product than the Chinese original.
How a Real Remedy Became a Byword for Fraud
The transformation happened in the late 19th century, when American hucksters saw a business opportunity. The most famous was Clark Stanley, who branded himself “The Rattlesnake King” and sold Clark Stanley’s Snake Oil Liniment at medicine shows across the country. He claimed it cured everything from toothaches to paralysis. His showmanship was memorable: he reportedly slaughtered rattlesnakes onstage and plunged them into boiling water to extract their oil in front of crowds.
The problem was that his product didn’t contain any snake oil at all. After the Pure Food and Drug Act passed in 1906, federal investigators eventually seized a shipment of Stanley’s liniment and tested it. The 1916 analysis found the bottle contained mineral oil, a fatty compound likely derived from beef, capsaicin from chili peppers, and turpentine. Stanley was fined $20 for misbranding and violation of the new federal law. Stanley and other medical fraudsters of his era permanently cemented “snake oil” and “snake oil salesman” into the American vocabulary as synonyms for quackery.
Why the Species Matters
The gap between the Chinese water snake and the American rattlesnake explains a lot of the story. Chinese water snakes are semiaquatic, and like many cold-water and aquatic animals, they accumulate higher concentrations of omega-3 fatty acids in their fat. It’s the same reason salmon and sardines are rich in omega-3s: the compounds help maintain cell membrane flexibility in cold environments.
Rattlesnakes, as land-dwelling desert animals, simply don’t accumulate the same fatty acid profile. At 8.5 percent EPA versus the water snake’s 20 percent, rattlesnake oil would have offered roughly the anti-inflammatory potency of a modest fish oil supplement. Even if Stanley had been honest enough to use real rattlesnake oil, the product still wouldn’t have lived up to the reputation of the Chinese original. The substitution of species, compounded by outright fraud, guaranteed the remedy’s downfall in American perception.
Modern Snake Oil by Another Name
The spirit of Clark Stanley is alive and well in the supplement industry. Today’s versions just don’t come in bottles labeled “snake oil.” Brain supplements like Prevagen and Neuriva market themselves with scientific-sounding language and polished commercials, but the pattern is familiar: bold health claims backed by little to no rigorous evidence.
Neuriva, for instance, lists phosphatidylserine and coffee cherry extract as its active ingredients. Phosphatidylserine hasn’t been proven to help with memory in significant clinical trials, and coffee cherry extract is essentially a byproduct of coffee production. After a lawsuit in 2021, the company behind Neuriva Plus agreed to remove the phrase “clinically proven” from its marketing because the product had not been validated by placebo-controlled studies. The primary evidence supporting many of these supplements comes from testimonials, which are the weakest form of scientific evidence.
Supplements in the United States aren’t regulated by the FDA the way prescription drugs or vaccines are. They don’t go through the same safety testing before reaching store shelves. This means a product can be sold for years before anyone formally challenges its claims, much like Stanley’s liniment circulated for decades before investigators opened a bottle and looked inside.
The Irony of the Whole Story
The phrase “snake oil” now means something fake. But the original Chinese water snake oil was, by modern nutritional standards, a legitimately potent source of omega-3 fatty acids, richer than salmon. The fraud wasn’t in the concept. It was in the American imitation: wrong species, wrong ingredients, and eventually no snake at all. The real lesson embedded in the history is less about whether natural remedies work and more about what happens when marketing outpaces the actual product inside the bottle.