Seconal (secobarbital) wasn’t pulled from the market by regulators in a single dramatic move. Instead, it was gradually abandoned over decades as safer sleeping pills replaced it, manufacturers stopped producing it, and the cost of remaining supply skyrocketed. The brand-name Seconal capsule is no longer commercially available in the United States, and generic secobarbital has become increasingly scarce and expensive.
How Safer Alternatives Made Seconal Obsolete
Barbiturates like secobarbital were the go-to prescription sleeping pills from the early 1900s through the 1960s. That changed when benzodiazepines arrived in the 1960s and were first promoted for insomnia in the early 1970s. Then in the 1990s, a newer class of sleep medications (often called Z-drugs) entered the U.S. market, starting with zolpidem in the early 1990s, followed by zaleplon and eszopiclone. Each generation offered a meaningful improvement in safety over barbiturates.
The core problem with secobarbital is how it acts on the brain. Both barbiturates and newer sleep drugs work by enhancing the activity of GABA, a chemical messenger that calms nerve signaling. But barbiturates are uniquely dangerous because they can force open the brain’s inhibitory channels even when very little GABA is present. Benzodiazepines and Z-drugs, by contrast, only amplify GABA signaling that’s already happening. This distinction matters enormously: it means barbiturates can suppress brain activity far beyond what the body can safely handle, while newer drugs have a built-in ceiling effect.
That runaway suppression is what makes barbiturate overdose so lethal. Secobarbital at high doses slows breathing to the point of respiratory arrest, drops blood pressure, and shuts down brainstem reflexes. The gap between a dose that puts you to sleep and a dose that kills you is dangerously narrow. Newer sleep medications carry their own risks, but they are far less likely to cause fatal respiratory depression on their own. As one review of insomnia treatment history put it, the evolution of sleep medications over recent decades has primarily been about major improvements in safety.
Why Manufacturers Stopped Making It
Once doctors had safer prescribing options, the number of secobarbital prescriptions plummeted. Fewer prescriptions meant less revenue for manufacturers, and one by one, pharmaceutical companies stopped producing it. The brand-name Seconal, originally made by Eli Lilly, changed hands several times before being discontinued. Generic versions persisted for a while, but with such a small market, those manufacturers also scaled back or exited.
By the 2010s, the remaining supply of secobarbital in the U.S. was limited and extraordinarily expensive. This wasn’t the result of a government ban. Secobarbital is still technically an approved drug and remains a Schedule II controlled substance under federal law. But approval on paper means little when no company finds it profitable to manufacture and distribute.
The Medical Aid-in-Dying Connection
One of the last significant uses of secobarbital in the U.S. was in states with legal medical aid-in-dying programs. High-dose barbiturates, typically 9 to 15 grams of secobarbital or pentobarbital, were the standard medications prescribed under laws like Oregon’s Death with Dignity Act. The very property that made secobarbital dangerous as a sleep aid, its ability to reliably suppress breathing at high doses, made it effective for this purpose. Both the Netherlands’ euthanasia guidelines and the Canadian medical assistance in dying protocol have recommended barbiturates.
But even this use has largely ended in the United States. According to Oregon’s 2020 Death with Dignity Act report, pentobarbital became unavailable for assisted suicide in 2015, and secobarbital followed in 2019. The scarcity and cost forced aid-in-dying programs to develop alternative drug combinations. Before it disappeared from the market, the price of a lethal dose of secobarbital had risen to several thousand dollars, putting it out of reach for many patients.
Is Secobarbital Still Available Anywhere?
Secobarbital has not been formally revoked from the FDA’s list of approved drugs, so it exists in a regulatory gray zone: approved but essentially unavailable. A pharmacy could theoretically dispense it if a manufacturer produced it, but finding a reliable supply in the U.S. is extremely difficult. Some compounding pharmacies may be able to prepare it in limited circumstances, but standard retail pharmacies do not stock it.
The handful of medical situations where barbiturates still see occasional use, such as certain seizure emergencies or specific anesthesia protocols, rely on other barbiturate compounds rather than secobarbital. For insomnia, the condition Seconal was originally prescribed for, no current clinical guideline recommends it. The drug’s story is less about a single moment of discontinuation and more about a slow fade driven by better science, shrinking demand, and the basic economics of pharmaceutical manufacturing.