The history of cannabis prohibition is also a history of language. Before marijuana became the dominant term in American law and public debate, cannabis appeared in pharmacies and medical literature. During the early twentieth century, a different name became increasingly associated with fear, criminality and federal enforcement.
Before Marijuana Became a Menace
During the 1800s and early 1900s, American pharmacies sold cannabis preparations.
Physicians sometimes prescribed them for medical purposes.
Cannabis appeared in the United States Pharmacopeia during the nineteenth century.
Its inclusion reflected the plant's established place within the medical and pharmaceutical system of that period.
A Different Name Enters Public Debate
In the early 1900s, the term marihuana became increasingly common in American newspapers and law enforcement.
The word was widely associated with Mexican Spanish usage.
Unlike cannabis, it did not carry the same familiar identity within American medical practice.
According to the original account, that difference became important as public attitudes toward the plant changed.
Harry Anslinger and the Federal Campaign
During the 1930s, Harry Anslinger and the Federal Bureau of Narcotics promoted national anti-marihuana messaging.
The campaign emphasized sensational claims involving:
Young people.
Crime.
Moral decline.
Public danger.
The bureau amplified these themes through public statements and media coverage.
According to the original account, the messaging helped establish a frightening public image of marihuana that was increasingly disconnected from the older medical identity of cannabis.
1937: The American Medical Association Objects
The terminology became a point of controversy during congressional hearings on the Marihuana Tax Act of 1937.
Dr. William C. Woodward, legislative counsel for the American Medical Association, objected to the wording.
He testified that marihuana was not recognized as a medical term and described it as a "mongrel word."
Woodward argued that the terminology created confusion for physicians and pharmacists.
His objection demonstrated that the distinction between cannabis and marihuana had practical consequences for people familiar with the plant's medical history.
What Did the 1937 Law Actually Do?
The Marihuana Tax Act did not directly ban cannabis outright.
Instead, it imposed taxation, registration requirements and penalties that made lawful commerce increasingly difficult.
The original account emphasizes that the terminology helped separate the public image of marihuana from the older pharmaceutical identity of cannabis.
The legal restrictions and public messaging reinforced one another.
1942: Cannabis Leaves the Pharmacopeia
By 1942, cannabis had been removed from the United States Pharmacopeia.
The removal marked the end of its formal recognition within that reference system.
It also reflected how far cannabis had moved from its earlier position in American medicine.
1970: The Word Becomes Federal Law
Congress passed the Controlled Substances Act in 1970.
The legislation used marihuana as the federal legal term.
The terminology that had become prominent during earlier prohibition campaigns was now embedded in federal law.
Was Language Responsible for Prohibition?
The original account does not argue that terminology alone caused cannabis prohibition.
Political decisions, enforcement campaigns and broader social attitudes also played roles.
However, the word marihuana helped create distance between the plant's medical history and its emerging public image.
That separation made it easier to present cannabis as unfamiliar, foreign and dangerous.
Legacy: When a Name Changes Perception
Cannabis prohibition cannot be explained by language alone, but terminology contributed to the transformation of public attitudes.
During the nineteenth century, cannabis was recognized within American medical practice.
By the 1930s, federal campaigns increasingly presented marihuana through sensational claims about crime and morality.
The 1937 Marihuana Tax Act, removal from the Pharmacopeia in 1942 and use of marihuana in the 1970 Controlled Substances Act marked important stages in that transformation.
The story illustrates how naming can influence the public understanding of a substance and the policies developed around it.
Sources
nuggnotes. "Marijuana: The Word That Helped Ban Cannabis." Instagram, 11 Jan. 2026, https://www.instagram.com/p/DTY4E72kheb/.
The original nuggnotes post — primary source for the article's language-as-weapon framing as the account presents it.
Bridgeman, Mary Barna, and Daniel T. Abazia. "Medicinal Cannabis: History, Pharmacology, and Implications for the Acute Care Setting." P & T, vol. 42, no. 3, 2017, pp. 180–188, https://pmc.ncbi.nlm.nih.gov/articles/PMC5312634/.
Peer-reviewed history: cannabis was described in the United States Pharmacopoeia for the first time in 1850, federal restriction began with the 1937 Marihuana Tax Act, cannabis was dropped from the USP in 1942, and federal prohibition followed under the Controlled Substances Act of 1970.
"History of Cannabis Scheduling in the United States." Americans for Safe Access, 2024, https://www.safeaccessnow.org/history_of_cannabis_scheduling_2024.
Timeline pinning the edition details: cannabis first introduced in the 3rd edition of the U.S. Pharmacopoeia (1851) and removed in the 12th edition (1942); also logs the FBN's 1930 creation under Anslinger and the AMA's 1937 testimony against the Tax Act.
United States Congress, House Committee on Ways and Means. Taxation of Marihuana: Hearings before the Committee on Ways and Means, 75th Cong., 1937. Testimony of Dr. William C. Woodward, 4 May 1937, as transcribed in "Prohibition '37: The AMA Dissents," Anderson Valley Advertiser, https://theava.com/archives/22262.
"Mongrel word" attribution confirmed as Woodward's own words: the AMA's legislative counsel testified that the term "marijuana" is "a mongrel word that has crept into this country over the Mexican border" and "is not recognized in medicine."
Lee, Martin A. "The Origins of Reefer Madness." Project CBD, 15 Oct. 2017, https://projectcbd.org/policy/the-origins-of-reefer-madness/.
Documents Anslinger's FBN campaign from 1934 — the "Gore File" of crime anecdotes, the July 1937 American Magazine article "Assassin of Youth," the deliberate preference for the foreign-sounding "marihuana" over "cannabis" — and that HR 6385 was designed to prohibit use by imposing an exorbitant tax rather than banning the plant outright.
Gardner, Fred. "The Prohibition of Marijuana in Three Acts." CounterPunch, 12 July 2013, https://www.counterpunch.org/2013/07/12/the-prohibition-of-marijuana-in-three-acts/.
Hearing-transcript excerpts in which Treasury counsel Clinton Hester explains the mechanism (a $100-per-ounce transfer tax paid via official order forms), alongside Anslinger's testimony and Woodward's dissent; the Act passed without a roll-call vote.
"Definitions." United States Code, Title 21, sec. 802, 2013 ed., Justia, https://law.justia.com/codes/us/2013/title-21/chapter-13/subchapter-i/part-a/section-802/.
The CSA's own text at § 802(16) retains the old spelling — "The term 'marihuana' means all parts of the plant Cannabis sativa L.…" (Current editions amended after the 2018 Farm Act now read "'marihuana' and 'marijuana'"; the 2013 code shows the original CSA spelling.)
"Why Some People Believe 'Marijuana' Is a Racist Word, and Why It Doesn't Offend Me." San Antonio Current, 5 May 2023, https://www.sacurrent.com/cannabis/why-some-people-believe-marijuana-is-a-racist-word-and-why-it-doesnt-offend-me-31654627.
Interviews historian Isaac Campos (Home Grown): "marihuana" first appears in Mexican newspapers in 1842, reached the U.S. in the 1890s, and was the second-most-common term for intoxicant cannabis in 1910s U.S. newspapers — a scholarly counterpoint on how far 1930s officials created (vs. rode) the word's rise.
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