Friedrich Sertürner was 21 years old, working as a pharmacist's apprentice. He had no formal scientific training. He had a hypothesis that contradicted everything the medical establishment believed about plant-based compounds. When he published his findings in 1805, they ignored him.
It took more than a decade for the scientific community to catch up. When they did, it became clear that Sertürner had done something nobody had ever done before: isolated the active ingredient in a medicinal plant and extracted it in a pure, measurable form. He named it morphine, after Morpheus, the Greek god of dreams. In doing so, he made it possible, for the first time in history, to prescribe a painkiller in a dose you could actually calculate and trust.
That sounds like a small thing until you consider what came before it. Physicians had been using raw opium for thousands of years, but every batch was different. The concentration of active compounds varied unpredictably from one preparation to the next. Dosing was guesswork, and the consequences of getting it wrong were severe. Sertürner's discovery didn't just give medicine a new drug. It gave medicine a new standard. Every pharmaceutical that followed is built on that idea.
Friedrich Sertürner. Source: https://en.wikipedia.org/wiki/Friedrich_Sertürner
Nature's famous painkiller, opium
Of the active substances used in medicine at the turn of the 19th century, opium – a narcotic substance produced from the seed pods of the poppy plant – had already been an important medicinal and recreational drug for at least 7,000 years. The first mention of opium (Papaver somniferum) is recorded in Sumerian tablets of the third millennium BCE. Later, knowledge of its potent effects spread to ancient Syria, Babylon and Egypt, where an advanced medical culture developed opium as a painkiller.
In 1522, Theophrastus Paracelsus, a Swiss physician, created laudanum, a mixture of opium and alcohol, that was used through the 18th century to treat a wide variety of diseases. With new developments in chemistry introduced by Lavoisier in the late 1700s, many chemists began a series of attempts to isolate the active ingredients in other plants for use as medicines.
These herbal remedies consisted mainly of impure vegetable derivatives containing inert and pharmacologically active substances, but in unknown quantities and varying proportions so that dosage was impossible to calculate. It is within this scientific context that Sertürner began his own experiments on extracting morphine from poppies.
Papaver somniferum, more commonly known as the opium poppy plant. Source: https://en.wikipedia.org/wiki/Papaver_somniferum
Sertürner isolates morphine
Sertürner’s project was to isolate the substance in poppies demonstrating analgesic properties. Self-taught rather than university-educated, Sertürner accomplished his research with only meager knowledge of the relevant studies and with humble equipment. Though he lacked formal medical training, he logically hypothesized that there must be an active ingredient in the opium which, if extracted and purified, could be delivered in a safe, effective, and reliable dose.
While working as a pharmacist’s apprentice, Sertürner spent his spare time conducting experiments on opium, such as dissolving it in acid and precipitating out various by-products. After several months of trial and error, he isolated what he believed to be the “soporific principle” or sleep-inducing active ingredient. He reported his discovery in letters to the editor of Germany’s most important journal of pharmacy in 1805, hoping to publish his findings.
Unfortunately, the medical community rejected his discovery as unscientific, because it contradicted current beliefs that all substances derived from plants must be acidic in nature. Sertürner’s substance, on the contrary, was alkaloid. Little did Sertürner realize it at the time, but he had unwittingly launched a brand-new branch of science now called “alkaloid chemistry.”
Disappointed and not little insulted, Sertürner set aside his research for years until one evening when a bout of physical pain prompted him to pick up where he had left off. While suffering from a terrible toothache, he ingested a small quantity of his morphine salts, experienced tremendous relief, fell fast asleep, and awoke hours later to attest that this compound was, in fact, safe for human consumption.
Morphine, C17H19NO3 Source: https://en.wikipedia.org/wiki/Morphine
To support his own self-experimentation, he conducted experiments on three friends to prove that the substance he had isolated was indeed the one which was responsible for the actions of opium. Eventually university researchers in France began to confirm his results, and Sertürner was ultimately credited with being the discoverer of the new substance, which he named “morphium” after Morpheus, the ancient Greek god of dreams.
A painting of Morpheus by Jean-Bernard Restout, the greek god of dreams. Source: https://en.wikipedia.org/wiki/Morpheus
Finding the right dose
Based on his experiments with himself and his friends, Sertürner noted that 30 mg of morphine induced a euphoric sensation, a second dose caused drowsiness, while a third dose brought on sleep. For use as an analgesic only, he suggested 15 mg. Now, physicians could prescribe morphine in regulated dosages for easing pain without the risks of overdose previously associated with raw poppy juice, the prior remedy that varied unpredictably in its concentration of morphine from one batch to the next.
For the next 50 years, the drug had to be administered orally until the invention of the hypodermic needle in 1843, which allowed instantaneous and more powerful effects. The final stages of morphine’s evolution occurred in 1925, when Sir Robert Robinson deduced the empirical formula of morphine, and in 1952, when Marshall D. Gates, Jr. synthesized the drug in a laboratory.
Friedrich Sertürner's legacy
For a so-called amateur scientist, Frederick Sertürner had a far-reaching influence on both pharmacology and chemistry. His discovery of morphine, of course, is most important to the well-being of the general public in their management of pain, but its story also served as an inspiration for further scientific developments.
In the world of chemistry, Sertürner’s achievement was multiple: he was the first to isolate the active ingredient associated with a medicinal plant and the first to isolate an alkaloid from any plant, thus disproving the prevailing notion that all plant substances were acidic in nature and launching the new science of alkaloid chemistry.
Sertürner’s initiative stimulated other chemists to isolate other important alkaloids, such as codeine, quinine, strychnine, and caffeine. In 1818, “morphium” was renamed “morphine” when the term “alkaloid” was coined by W. Meissner, who systematically applied the suffix -ine to all members of the group.
Friedrich Sertürner accomplished all of these remarkable achievements starting at age 16 as a pharmacist’s apprentice. He is an inspiration to all pharmacists everywhere who dream of expanding the field into new territory.
Frequently Asked Questions
Who discovered morphine?
Friedrich Sertürner, a self-taught German pharmacist's apprentice, discovered morphine around 1804 by isolating the active compound from raw opium. He had no university degree and modest equipment. He called what he found the "soporific principle" of the poppy plant and published his findings in a letter to a German pharmacy journal in 1805.
When was morphine discovered?
Sertürner first isolated morphine around 1804 and published his initial findings in 1805, though the scientific community rejected his work for over a decade. It wasn't until 1817, when French chemists confirmed his results, that he received proper credit. The substance was officially named "morphine" in 1818 when the term "alkaloid" was coined.
What is alkaloid chemistry and why does it matter?
Alkaloids are naturally occurring plant compounds that have powerful effects on the human body — think caffeine, quinine, and morphine. Before Sertürner, nobody had isolated one in pure form. His 1805 discovery proved it could be done, launching a new branch of science and directly leading to the isolation of codeine, quinine, caffeine, and strychnine over the following decades.
What is the difference between morphine and opium?
Opium is the raw resinous substance harvested from the opium poppy, containing dozens of compounds in unpredictable concentrations that varied from batch to batch. Morphine is the purified active ingredient Sertürner isolated from opium. Because morphine is a single compound in a known concentration, it can be prescribed in a precise, reliable dose — something raw opium made impossible.
How did Sertürner test morphine?
Sertürner tested morphine on himself and three friends. He noted that 30mg produced euphoria, a second dose caused drowsiness, and a third brought on sleep. For pain relief only, he recommended 15mg — the first time a specific analgesic dose had ever been proposed for any drug in the history of medicine.
Is morphine still used today?
Yes. Morphine is still one of the most widely used drugs for managing severe pain, and sits on the World Health Organization's List of Essential Medicines. It's also the chemical foundation for most modern opioids, including codeine, oxycodone, hydrocodone, and fentanyl. Nearly every drug used to treat serious pain today traces its lineage directly back to Sertürner's discovery.
