Chemistry, not medicine, defeated America's patent medicine epidemic
Nineteenth-century American patent medicines grew through anti-establishment sentiment and newspaper advertising; the real exposé came not from advances in germ theory but from analytical chemistry finally revealing what was actually in the bottle.
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Regulators caught snake oil and fined it twenty dollars
In 1917, federal chemists finally analyzed Clark Stanley's "snake oil" and found no actual snake—just mineral oil, beef tallow, capsaicin, camphor, and turpentine. His fine was $20 (roughly $523 today). For a decades-long con complete with live-snake demonstrations at the 1893 Chicago World's Fair, the penalty barely qualified as a wrist-slap.
— Erin WelshAnti-elite backlash stripped medical licenses from nearly all American doctors
Between 1820 and 1840, most American states abolished medical licensing. By 1845, only three states still required it. The pressures converged: Eastern medical schools couldn't produce enough rural physicians; the era's "heroic medicine" relied on massive bloodletting and forced vomiting (Benjamin Rush advocated draining roughly 80% of a patient's blood), so its authority was already questionable; and Jacksonian democracy held that professional licensure was inherently undemocratic—ordinary people should choose their own treatments.
— Erin WelshNewspapers stayed afloat by running patent medicine advertisements
Nineteenth-century newspapers depended on patent medicine ads to survive. It was mutually beneficial: papers sold space, medicine makers reached a national audience. During the Civil War, the same product would run separate ads aimed at Union and Confederate readers, and marketers invented early clickbait—headlines like "South Carolina in Upheaval—General Beauregard Captured" that led readers to cough syrup advertisements.
— Erin WelshSnake oil's formula was likely stolen from Chinese immigrants
Clark Stanley claimed he learned snake oil from Hopi Indians, but the episode suggests he probably copied it from nineteenth-century Chinese immigrants who brought their own snake-oil remedy to America—made from Chinese water snakes and applied topically for joint pain. Later research confirmed these oils actually contained omega-3s with genuine anti-inflammatory effects. Indigenous remedies were routinely stolen by white entrepreneurs, who then repackaged them with invented tales of tribal wisdom.
— Erin WelshFraudsters learned to speak the language of germ theory
After the popular health movement faded, science regained public trust—but fraudsters didn't lose; they learned the lexicon. When germ theory emerged, so did products billed as "disinfectants" and "microbe killers," often advertised as "Pasteur's favorite." Contrary to what you might expect, patent medicine sales didn't drop as microbiology advanced; they continued climbing. Scientific progress didn't stop the fake medicine market—it just gave con artists better vocabulary.
— Erin WelshPatients believed the most bitter medicines worked the hardest
Many patent medicines deliberately included bitter compounds like quinine because widespread belief held that potency correlated with poor taste. Others created dependency through alcohol, cocaine, or opium. Some contained dangerous ingredients like belladonna, mercury, or arsenic. Placebo effects are genuine physiological phenomena, not mere psychology—which helps explain why customers remained loyal to useless medicines, convinced of their own healing.
— Erin WelshAnalytical chemistry exposed fakes in ways that laws never could
The real breakthrough wasn't medical knowledge or legislation—it was analytical chemistry, the first tool capable of opening a bottle and revealing its actual contents. When Radom's Microbe Killer was analyzed, it tested at 99.381% water with just a touch of red wine for coloring. Yet the 1906 Pure Food and Drug Act was weak: it only required manufacturers to list alcohol, opium, and similar ingredients by quantity. In the year the act passed, over 50,000 patent medicine brands were sold—up from 28,000 in 1905.
— Erin WelshThe supplement industry is heading toward five hundred billion dollars
The American patent medicine industry was valued at $74.5 million in 1904—approximately $228 billion in today's purchasing power, and projected to approach $500 billion by 2033. The episode argues this isn't primarily a legal problem but a permanent aspect of human nature: people always crave an inexpensive, simple, painless, fast-acting universal cure. That appetite hasn't diminished in the era of supplements, biohacking, and influencer commerce.
— Erin WelshIn their own words · checked verbatim
There was no trace, zero trace of snake anywhere in the concoction that he was selling, which is like good for the snakes.
Erin Welsh8:11
By 1845, only three states still had licensing in place.
Erin Welsh12:39
sometimes you've just got to drain someone of about 80% of their blood to get any sort of progress.
Erin Welsh13:39
Nothing in God's world is the matter with most of you, but worms, worms, worms
Erin Welsh29:00
It was found to be 99.381% water.
Erin Welsh43:19
In 1905, the year before the Food and Drug Act was passed, 28,000 patent medicine names were listed. The following year, which is the year the act was passed, there were more than 50,000 sold in just the U.S.
Erin Welsh45:21
Quackery is not only not vanquished, never in previous history has medical quackery been such a big business as now
Erin Welsh49:28
Medical experts will not guarantee results. They will hedge. They will say it's expensive.
Erin Welsh52:31
Figures
| Clark Stanley's fine (1917) | $20 (approximately $523 today) | 9:11 |
| States with medical licensing in place (1845) | 3 | 12:39 |
| Blood volume Benjamin Rush recommended draining | Approximately 80% of a patient's blood | 13:39 |
| Composition of Radom's Microbe Killer | 99.381% water, remainder red wine for coloring | 43:19 |
| Patent medicine products in circulation (1905) | 28,000 | 45:21 |
| Patent medicine brands sold (1906) | Over 50,000 | 45:21 |
| U.S. patent medicine industry valuation (1904) | $74.5 million (approximately $228 billion in today's purchasing power) | 47:26 |
Glossary
- Heroic medicine
- A 19th-century medical philosophy holding that more aggressive treatment produced better results, typically involving extensive bloodletting, forced vomiting, and purging.
- Patent medicine
- Commercially sold remedies with secret, unproven formulas that dominated 19th-century America and were heavily marketed through newspapers.
- Popular health movement
- A 19th-century American social trend that rejected professional medical authority and promoted individual self-diagnosis and home treatment.
How to listen
Anyone interested in the history of consumer protection, the evolution of medical regulation, or understanding how today's supplement and biohacking marketing operates.
The opening section featuring Clark Stanley's autobiography can be skipped without losing the thread of the argument.