In United States v. Forty Barrels and Twenty Kegs of Coca-Cola, the federal government seized a 1909 shipment of Coca-Cola syrup in Chattanooga and prosecuted the syrup itself, arguing that the caffeine in the drink was an unlawful “added” ingredient under the Pure Food and Drug Act of 1906. The Supreme Court agreed with the government in 1916 on the key legal question, and the company settled the following year by cutting the caffeine content of its product and paying the accumulated court costs.
The odd caption comes from the procedure. This was an in rem action, meaning the lawsuit named the property rather than The Coca-Cola Company as the defendant. Federal marshals had physically seized the barrels and kegs, and the case that followed was a fight over whether that property could lawfully move in interstate commerce.
Why Federal Marshals Seized the Syrup
The prosecution was driven by Dr. Harvey Washington Wiley, chief of the U.S. Bureau of Chemistry in the Department of Agriculture. Wiley had been central to the passage of the Pure Food and Drug Act of 1906, the first major federal law prohibiting adulterated products and false labeling in interstate commerce.1U.S. Food and Drug Administration. Part I: The 1906 Food and Drugs Act and Its Enforcement He wanted to test the new law against a large national brand.
Wiley became convinced that added caffeine in Coca-Cola was habit-forming and dangerous, particularly to children. Secretary of Agriculture James Wilson eventually approved a case against the company. On a cold October morning in 1909, U.S. Marshals stopped a shipment of Coca-Cola syrup arriving by rail in Chattanooga and seized forty barrels and twenty kegs of the product.
The Two Charges Against the Syrup
The government brought two theories under the 1906 Act.
The first was adulteration. The statute treated a food as adulterated if it contained “any added poisonous or other added deleterious ingredient which may render such article injurious to health.”2FindLaw. United States v. Forty Barrels and Twenty Kegs of Coca-Cola, 241 U.S. 265 Prosecutors said the beverage carried about 1.21 grains of caffeine (roughly 78 milligrams) per eight-ounce serving and argued that caffeine was a habit-forming stimulant that could harm consumers.
The second was misbranding. The government argued that the name “Coca-Cola” told buyers they were getting a product made from coca leaves and kola nuts, when in fact the syrup contained only trace amounts of coca extract (with the cocaine already removed) and little if any kola. The label also omitted caffeine entirely.2FindLaw. United States v. Forty Barrels and Twenty Kegs of Coca-Cola, 241 U.S. 265
How Coca-Cola Defended the Formula
The company conceded the syrup contained “a small portion of caffeine” but denied it was “added.” Its argument was that Coca-Cola was a proprietary compound sold under its own distinctive name, and caffeine had been part of the recipe from the start. The 1906 Act exempted proprietary foods sold under distinctive names from adulteration claims so long as they contained no added harmful ingredients. Because caffeine was baked into the original formula, the company said, it could not be treated as something added later.2FindLaw. United States v. Forty Barrels and Twenty Kegs of Coca-Cola, 241 U.S. 265
On misbranding, the company argued that “Coca-Cola” was a fanciful trade name, not an ingredient list. It had been sold under that name for more than twenty years, and consumers understood the words to identify a specific beverage. The company also said its formula did in fact draw on both coca leaves and kola nuts, even if in small quantities.3vLex United States. United States v. Forty Barrels and Twenty Kegs of Coca-Cola
The Trial and the First Ruling
The case went to trial in the U.S. District Court in Chattanooga in 1911, with scientific witnesses on both sides testifying about caffeine’s effects on the body. The district judge sided with Coca-Cola. He concluded that caffeine was “not an addition to this compound, but one of its essential and normal ingredients,” and directed a verdict for the company. Once the adulteration theory collapsed, the government dropped its misbranding counts and the jury dismissed the case.4Calculators.law. United States v. Forty Barrels and Twenty Kegs of Coca-Cola, 191 F. The Sixth Circuit Court of Appeals affirmed. The government appealed to the Supreme Court.
What the Supreme Court Decided in 1916
The Supreme Court heard argument on February 29, 1916, and issued its decision on May 22, 1916. Justice Charles Evans Hughes wrote the opinion, reversing the lower courts on both counts.2FindLaw. United States v. Forty Barrels and Twenty Kegs of Coca-Cola, 241 U.S. 265
On the central question of whether caffeine was “added,” Hughes walked through the manufacturing sequence. Coca-Cola began as a sugar syrup. Coloring, flavoring, and other ingredients were then introduced to give it a distinctive character, with caffeine going in during the second or third stage of melting. That sequence, Hughes wrote, meant caffeine was artificially introduced into an existing product and was therefore “added” within the meaning of the statute. Choosing a secret formula and a proprietary name did not change the answer. “We cannot conclude that it was the intention of Congress to afford immunity by the simple choice of a formula and a name,” the Court said.5Legal Information Institute. United States v. Forty Barrels and Twenty Kegs of Coca-Cola, 241 U.S. 265
The Court also reversed on misbranding. Hughes found that “Coca-Cola” was not purely fanciful and could reasonably be read as describing a product made with coca and kola ingredients. Because the evidence on whether meaningful amounts of those ingredients were present was in dispute, a jury should have been allowed to weigh it. Directing a verdict was error.5Legal Information Institute. United States v. Forty Barrels and Twenty Kegs of Coca-Cola, 241 U.S. 265
One limit deserves emphasis. The Supreme Court did not hold that caffeine was in fact harmful. Whether the caffeine in Coca-Cola could “render it injurious to health” remained a factual question, and the case was sent back for a new trial on both counts.6Library of Congress. United States v. Coca-Cola Company of Atlanta, 241 U.S. 265
The 1917 Settlement
The retrial never happened. Having lost the “added ingredient” argument at the Supreme Court, The Coca-Cola Company settled with the federal government in 1917. The widely reported terms had the company agreeing to reduce the caffeine content of its product and to pay the accumulated court costs. No jury ever decided whether the caffeine level in Coca-Cola was actually dangerous.
Both sides could claim something. The government had a Supreme Court ruling that proprietary formulas could not shield ingredients from federal scrutiny. Coca-Cola avoided a jury verdict that its signature drink was harmful, and the brand survived intact.
Why the Ruling Still Matters
The holding on “added” ingredients shaped food regulation for decades. Before the decision, manufacturers had a plausible argument that anything included in a proprietary recipe from the beginning was outside the statute. Hughes’s opinion closed that route. An ingredient artificially introduced into a food was “added” regardless of what the finished product was named. That principle carried forward into the Federal Food, Drug, and Cosmetic Act of 1938, which replaced the 1906 law and remains the foundation of federal food safety regulation.7U.S. Food and Drug Administration. Part II: 1938 Food, Drug, and Cosmetic Act
The misbranding portion of the opinion mattered too. By treating “Coca-Cola” as potentially descriptive rather than purely arbitrary, the Court set an early marker for how judges assess whether a brand name misleads consumers about what is actually in the bottle.