Your Grandmother Probably Did This
If your grandmother had a bad cough or a sore back in 1925, her pharmacist might have measured a few drops of cannabis tincture into a small glass bottle and handed it to her with a label and a price. Eli Lilly made it. So did Parke-Davis. So did Squibb. It sat on drugstore shelves next to the aspirin.
That is not a story. That is a fact of American pharmacy from 1850 to 1941. Whatever you think you know about cannabis was shaped by what came after — not by what came before. This page is about what came before, because the long view changes the conversation.
Your grandmother probably had this in her medicine cabinet
Cannabis was added to the United States Pharmacopoeia — the official reference book that defines what counts as legitimate medicine in this country — in 1850. It stayed there for 91 years, until it was dropped in 1941 (Wikipedia, Medical cannabis in the United States, citing the USP).
During that stretch, the major American pharmaceutical companies of the era manufactured and sold cannabis preparations as routine commercial products. Parke-Davis, Eli Lilly, and E. R. Squibb & Sons — names that became some of the largest drug companies in the world — all sold cannabis in tincture form in the second half of the 19th century (Wikipedia, Medical cannabis in the United States).
This was not a fringe product. It was inventory.
A doctor writing a cannabis prescription in 1910 was doing something as ordinary as a doctor writing a prescription for cough syrup today.
If you do the math on your own family tree, the implication is direct: anyone with American grandparents born before about 1920 has, almost certainly, a relative who was prescribed cannabis by a doctor — and who paid for it at a drugstore, by name, off a printed price list.
The doctor who said no
In 1937, Congress took up a bill called the Marihuana Tax Act. It used a tax mechanism to make cannabis effectively impossible to prescribe, dispense, or grow without paying prohibitive federal stamps. The American Medical Association sent its legislative counsel, Dr. William C. Woodward, to testify against it.
Woodward's objection was, by the standards of 1937 congressional testimony, pointed. He told the committee that the claims being made about cannabis — about addiction, violence, and danger — were not supported by the medical evidence, and that the proposed law would impose burdens on physicians, pharmacists, and researchers without scientific justification (summarized at Wikipedia, Marihuana Tax Act of 1937).
The bill passed anyway.
The AMA was not arguing for cannabis. It was arguing for evidence. It lost.
The reason this matters in 2026 isn't political. It's chronological. When you hear that the medical establishment "opposed cannabis for a century," that isn't quite right. The medical establishment of 1937 opposed the law — and was overruled by Congress.
The gap
From the late 1930s onward, cannabis was pulled out of the pharmacy, out of the pharmacopoeia, out of the medical school curriculum, and out of the cultural conversation about medicine. The cultural conversation it entered instead was the one most readers of this page remember: prohibition, then counterculture, then the war on drugs, then the slow state-by-state thaw beginning in the late 1990s.
That is roughly a 60-year window in which most American adults grew up without ever encountering cannabis as anything other than contraband.
If you were born between 1940 and 1980, the only cannabis you ever saw was the version produced by prohibition.
This is the frame most readers walked in with. It is not wrong; it is just incomplete. There was a pharmacy version, then a prohibition version. Most living Americans have only ever met one of them.
Your body has been waiting for it
Here is the part most people genuinely have not heard.
In November 1988, a team led by Allyn Howlett at St. Louis University — with William Devane as first author — published the discovery of a specific receptor in the mammalian brain that responds to compounds in cannabis. They called it the CB1 receptor (Devane, Dysarz, Johnson, Melvin, Howlett, Molecular Pharmacology, November 1988).
Four years later, in December 1992, William Devane and Lumír Hanuš — working in the laboratory of Israeli chemist Raphael Mechoulam — isolated the molecule the human body itself produces to bind to that receptor. They named it anandamide, from the Sanskrit word for bliss (Devane et al., Science, December 1992).
In plain English: the human body manufactures its own cannabis-family compound, and it has dedicated receptors waiting to receive it. This network is now called the endocannabinoid system. It was not invented by anybody. It was discovered. It is in you whether you ever touch a cannabis product or not.
The body did not develop a receptor system for cannabis. Cannabis happens to fit a receptor system the body already had.
That is not marketing copy. That is the textbook account of one of the more interesting findings in 20th-century pharmacology.
What this changes
Here is the frame update, and it is the only one this page is asking for.
Cannabis is not an edgy new product that arrived in time for your retirement. It is a plant that was sold by Eli Lilly when your grandparents were children, opposed in its prohibition by the AMA's own counsel in 1937, removed from mainstream medicine in 1941, and rediscovered — biologically — by laboratory science in 1988 and 1992.
The federal survey on substance use, NSDUH (Substance Abuse and Mental Health Services Administration), tracks cannabis use across age groups and has documented steady increases among older adults in recent years (SAMHSA, NSDUH annual releases). Whether or not those increases ever include you is your own decision. Nothing on this page is asking you to make it.
What this page is asking you to do is much smaller. It is asking you to set down the version of cannabis you inherited from the 1970s and 1980s — the one assembled almost entirely out of prohibition-era messaging — and pick up a longer version. One that includes the drugstore shelf, the AMA testimony, and the receptor in your own brain.
You don't have to use cannabis to be curious about it. You just have to know that the frame you were handed was missing about ninety years on the front end and about thirty-five years on the back.
That is the homecoming. Not to a product. To a fuller picture.
Where to go from here
If you want the practical version of all this — what the different consumption methods actually are, how dosing works, and what questions to bring to your own doctor — WEED: A Senior's Guide to Cannabis walks through it chapter by chapter. A good next page on this site is the Safety guide, which covers medication interactions and dosing for older adults.