Valium is not derived from valerian root. Despite the similar names and the fact that both promote relaxation, Valium (diazepam) is a fully synthetic drug created in a laboratory, while valerian is a plant that has been used as an herbal remedy since ancient Greece and Rome. The two have no botanical or chemical relationship, though they do share a surprising overlap in how they affect the brain.
Why the Names Sound So Similar
The resemblance is a coincidence of Latin roots. The brand name “Valium” comes from the Latin word “vale,” meaning “goodnight.” Valerian, on the other hand, likely takes its name from the Latin “valere,” meaning “to be strong” or “to be healthy.” Both words trace back to the same ancient language, which is why they sound related, but the drug was not named after the plant.
How Valium Was Actually Made
Valium was synthesized in 1963 by Leo Sternbach, a chemist working at the pharmaceutical company Hoffmann-La Roche. Sternbach had been experimenting with a class of synthetic compounds originally explored as potential dye intermediates in German chemistry labs. Through that work, he discovered the benzodiazepine class of drugs. Chlordiazepoxide (Librium) came first, and diazepam (Valium) followed as a more refined version. No plant material was involved at any stage. The entire molecule was built from scratch using chemical synthesis.
What Valerian Root Actually Contains
Valerian root contains a complex mix of natural compounds, none of which resemble diazepam’s molecular structure. The root and rhizomes are rich in sesquiterpenes and iridoids. The most notable active compounds are valepotriates (including valtrate and isovaltrate), which contribute to its sedative reputation, and valerenic acid, which appears to be responsible for its calming effects. The plant has been used medicinally since ancient Greece and Rome, traditionally for insomnia, migraine, fatigue, and stomach cramps.
They Work on the Same Brain System, but Differently
Here’s where the confusion gets understandable. Both Valium and valerian affect the same calming system in the brain: GABA receptors. GABA is the brain’s primary “slow down” signal, responsible for most of the fast inhibitory messaging in the nervous system. When GABA binds to its receptors, it opens channels that let chloride ions flow into nerve cells, making those cells less likely to fire. The result is a feeling of calm, muscle relaxation, and sleepiness.
Valium works by latching onto a specific spot on the GABA-A receptor, between the gamma and alpha subunits. It doesn’t activate the receptor directly. Instead, it acts as an amplifier: when GABA shows up, Valium makes the receptor respond more strongly, increasing how often the channel opens. This is why benzodiazepines are called “positive allosteric modulators.” The effect is potent, reliable, and dose-dependent, which is why Valium requires a prescription and carries a risk of dependence.
Valerenic acid, the key active compound in valerian root, also interacts with GABA-A receptors, but it binds to a different part of the receptor (the beta subunit rather than the gamma subunit). Valerian also appears to slow the breakdown of GABA itself, keeping more of it available in the brain for longer. So while both substances nudge the same calming system, they do it through different mechanisms and with vastly different potency. Valerian’s effects are much milder and less predictable.
Why You Shouldn’t Combine Them
Because both substances enhance GABA activity, taking valerian root alongside Valium or other benzodiazepines could amplify sedation beyond what either would produce alone. The NIH warns of a theoretical risk of additive sedative effects when valerian is combined with benzodiazepines, barbiturates, or alcohol. This applies to other benzodiazepines as well, not just Valium. The risk isn’t just drowsiness: excessive GABA activity can slow breathing and impair coordination.
Valerian is sold as a dietary supplement, not a regulated medication, which means its potency varies between brands and batches. That inconsistency makes the interaction harder to predict. If you’re taking any prescription sedative, it’s worth knowing that valerian isn’t as harmless as its “natural remedy” label might suggest.
Similar Reputation, No Shared Origin
The persistent myth that Valium comes from valerian root likely survives because everything lines up on the surface: similar names, similar uses, similar brain targets. But the chemistry tells a different story. Valium is a synthetic benzodiazepine designed in a lab from compounds that were originally studied as dye intermediates. Valerian is a flowering plant whose roots contain a cocktail of natural sedative compounds. They arrived at a loosely similar destination through completely independent paths.