Written by Dorene Petersen, BA, Dip.NT, Dip. Acu, ND (NZ), RH (AHG) · Founding President, American College of Healthcare Sciences

What is Valerian Root?

Valerian root Valeriana officinalis is a medicinal herb traditionally used to support sleep, relaxation, and nervous system balance. Modern research suggests it may help improve sleep quality and may reduce anxiety by supporting GABA activity in the brain. This article explores the history, science, safety, and clinical uses of valerian.

In the News

When Fox News called valerian an “ancient herb known as nature’s Valium”, I felt that familiar pull of gratitude that mainstream media is pointing people toward gentler options, and a deep desire to tell the fuller, richer story this herb deserves.

Fox News Digital (March 8, 2026) published: “Ancient herb known as ‘nature’s Valium’ touted for improving sleep, anxiety“. The article quoted Dr. Stefan Gafner of the American Botanical Council and sparked renewed mainstream interest in Valeriana officinalis. 

At American College of Healthcare Sciences, we have been teaching this herb for decades. Here is the deeper story:

I have a confession. Every time I encounter a beloved herb compressed into a pharmaceutical comparison, “nature’s Valium,” “herbal Prozac,” “plant-based ibuprofen,”  I feel two things simultaneously: genuine gratitude that more people are exploring safer, gentler options, and a deep herbalist’s longing to sit down over a cup of valerian tea and tell the fuller story.

Valeriana officinalis L. is not simply a softer version of a pharmaceutical drug. It is a plant with its own elegant pharmacology, its own particular genius, and a clinical track record stretching back more than 2,000 years, a record that modern science is only now beginning to fully illuminate.

At ACHS, valerian has been a cornerstone of our herbalism curriculum for good reason. What follows is what we know and what the latest research confirms.

An Herb with a 2,000-Year Clinical Record

Long before pharmaceutical companies synthesized diazepam in a laboratory, healers across Europe and Asia had already been reaching for valerian root for centuries.

The ancient Greek physician Dioscorides used it. The Roman naturalist Pliny the Elder described it in his Naturalis Historia. Medieval European herbalists called it “all-heal.” By the 17th century, the herbalist Gerard was writing about valerian root’s use “against the plague.” By the 18th and 19th centuries, it was among the most widely prescribed calming agents in Western medicine on both sides of the Atlantic.

What strikes me every time I reflect on this history is that these healers, working without laboratories, randomized trials, or molecular biology, had empirically identified something profoundly real. Across languages, continents, and centuries, independent traditions converged on the same root, for the same purposes: calming the mind, easing the body, and helping people find rest.

That is not a coincidence. That is knowledge earned through careful, multigenerational observation.

Fast forward to today, and we have more than 150 identified compounds in that root, a sophisticated mechanistic understanding of exactly how they interact with the human nervous system, and a growing body of rigorous clinical trials.

Traditional wisdom and modern science are, in this case, singing the same song.

• 2,000+ Years of documented medicinal use
• 150+ Identified active compounds in the root
• 60 Studies in landmark 2020 meta-analysis (n=6,894)
• AHPA 1 Safety Class 1 — safe when used as directed

Know Your Plant: Botanical Identity Is Never Trivial

In my decades of sourcing certified organic herbs and essential oils from chamomile fields in Hungary and Roman chamomile farms perched at 3,000 feet in South Korea to turmeric farms in Kerala and spice markets in Morocco and Istanbul,  I have learned one thing above all else: botanical identity matters enormously.

In herbal medicine, it is always the beginning, never the afterthought.

So let’s be precise. Valeriana officinalis L. is the primary commercial species used in Western herbal medicine. It belongs to the family Caprifoliaceae (you may still see it listed under the older classification Valerianaceae; this is another reminder that Latin binomials evolve, and checking current nomenclature is always good practice).

It is a robust, aromatic perennial growing two to five feet tall, with hollow, hairy stems, pinnately compound leaves, and lovely dense clusters of tiny white to pale pink flowers that bloom from June through August.

The part we use medicinally is the rhizome and roots, harvested from plants that are at least two years old, typically in late summer or early fall, when the leaves have yellowed and died back, signaling that the plant’s energy has moved into its root system.

Two related species are also used commercially: Indian valerian (V. wallichii DC.) and Mexican valerian (V. procera Kunth).

A practical caution worth knowing: Sitka valerian (V. sitchensis), which grows at higher elevations in the Pacific Northwest, contains only trace amounts of valerenic acid and limited therapeutic activity.

And while rare, commercial valerian has occasionally been confused with Veratrum album L. — white hellebore a plant with a very different and potentially toxic profile. This is precisely why sourcing from certified suppliers with valid certificates of analysis and proper identity testing is non-negotiable.

About That Distinctive Smell

If you have ever opened a bottle of valerian tincture and paused, yes, that pungent, earthy, almost sour aroma is entirely characteristic and completely intentional.

It comes primarily from isovaleric acid, which forms as the root dries and the volatile oils evolve. Interestingly, isovaleric acid is also produced in small amounts during human perspiration, an odd footnote that tickles the chemistry students at ACHS every time.

That strong, distinctive odor is actually a quality indicator: properly dried, therapeutically potent root should smell assertively of itself. A weak or faint aroma can signal degraded essential oil content and reduced efficacy.

Never judge valerian by its nose — embrace it.

The Science of Calm: Why Valerian Is Not Just “Herbal Valium”

This is the part of the valerian story I find most fascinating — and where the “nature’s Valium” comparison becomes simultaneously useful and limiting. Because the way valerian calms the nervous system is genuinely, elegantly different from how a pharmaceutical sedative does it. And that difference matters enormously — for safety, for sustainability, and for how you actually feel the next morning.

More than 150 compounds have been identified in valerian root — and here is what I find most fascinating about this herb: no single one of them is responsible for its calming effect. It is the whole conversation between them that produces the result. This is what herbalists call synergy, and valerian is one of nature’s most elegant examples of it. Isolate any single constituent, and you have something less than what the root assembled on its own.

So how does it actually work? Think of it this way.

3 Ways Valerian Calms Your Nervous System

1. It Turns Up Your Body’s Own “Calm” Signal

Your brain produces a natural calming chemical called GABA — think of it as your nervous system’s built-in volume dial for anxiety and racing thoughts. When you are stressed, overstimulated, or unable to sleep, that dial can get stuck too high.

Valerian’s key compound, valerenic acid, helps turn the dial back down — not by introducing a foreign chemical, but by helping your body use the calming signal it already makes more effectively. It increases GABA’s production, slows its breakdown, and keeps it active longer. That is very different from how a pharmaceutical sedative works, and it is why valerian does not create the dependency those drugs can.

2. It Supports Mood Through Serotonin

We now know that valerian also influences serotonin, the brain chemical most associated with mood, emotional balance, and well-being. A 2022 study published in Frontiers in Nutrition found that one of valerian’s aromatic compounds gently activates serotonin pathways in the brain.

This is why valerian tends to work especially well for people whose sleep troubles are tangled up with stress, worry, or low mood — it is addressing the root of the sleeplessness, not just the symptom.

3. Multiple Compounds Add Layers of Gentle Support

Beyond valerenic acid, valerian contains flavonoids and other plant compounds that contribute their own quiet calming activity through slightly different pathways. None of them are hitting the nervous system with the force of a pharmaceutical; they are adding layer upon layer of gentle, complementary support.

Isn’t it wonderful how many ways this one root has found to help you rest? That layered approach is also what makes valerian so forgiving and so safe; no single compound is doing more than it should.

“A pharmaceutical sedative overrides your nervous system. It forces calm. Valerian works with your body’s own chemistry, helping restore the natural calming signals your brain already knows how to make. That is not a lesser option. In many ways, it is a wiser one.”— Dorene Petersen, Founding President, ACHS

What Does the Research Actually Show?

The Fox News article referenced a 2020 review in the Journal of Evidence-Based Integrative Medicine, and rightly so. That systematic review and meta-analysis by Shinjyo, Waddell, and Green remains the most comprehensive synthesis of the valerian evidence base to date: 60 studies, 6,894 participants, significant anxiety reduction across eight anxiety trials, and meaningful sleep quality improvement across ten sleep trials. It is a foundational document. But the research landscape has continued to grow since then, and what the newest clinical evidence shows is genuinely exciting.

Latest Clinical Evidence — Valerian for Sleep (2024–2025)

2024 RCT (Advances in Therapy):
Chandra Shekhar, Joshua, and Thomas enrolled 80 adults with mild-to-moderate insomnia in an 8-week randomized, double-blind, placebo-controlled trial. Standardized V. officinalis extract produced statistically significant improvements in Pittsburgh Sleep Quality Index (PSQI) scores, sleep latency, total sleep time, and sleep efficiency — confirmed by both wrist actigraphy and polysomnography. Secondary outcomes included reduced anxiety scores (Beck Anxiety Inventory) and improved daytime alertness. No safety concerns were identified.

2025 Clinical Trial, Brazil (IJCMCR):
Antunes et al. conducted a pragmatic primary-care trial comparing valerian 100 mg to diazepam 5 mg in patients with insomnia. The valerian group achieved comparable PSQI improvement — and notably, better sleep efficiency than the diazepam group — without any risk of dependency. This is the study I want every practitioner to know about.

2023 Triple-Blind RCT — Menopausal Support (J Menopausal Med):
Jenabi et al. randomized 70 postmenopausal women to fennel-valerian (1 g/day) or placebo for eight weeks. The combination produced significantly lower PSQI scores and reduced hot flash frequency and severity compared to placebo. For women navigating the complex sleep disruptions of menopause, valerian warrants serious clinical consideration.

The Most Important Thing Most People Don’t Know About Valerian and Sleep

Valerian is not a fast-acting sedative.

This is perhaps the single most important clinical nuance that headlines consistently miss — and that practitioners and consumers most need to understand.

Unlike a benzodiazepine, which produces pronounced sedation within an hour of a single dose, valerian typically requires consistent nightly use for two to four weeks before its full sleep benefits emerge.

This is not a weakness. It is a reflection of valerian’s adaptive, tonifying mechanism — it restores and recalibrates normal GABA and serotonin function rather than overriding it.

The payoff, when it comes, is also sustainable:

• Valerian does not produce rebound insomnia when you stop
• It does not impair morning cognition
• It does not create physiological dependency

Valerian has also shown clinical utility in supporting people through benzodiazepine withdrawal. A dose of 300 mg in three divided daily doses, after a gradual two-week taper, has been shown to subjectively improve sleep quality during the transition.

Common Questions About Valerian Root — Answered

What is valerian root good for?

Valerian root Valeriana officinalis is best supported by clinical evidence for insomnia and anxiety. It is also used traditionally and in clinical practice for:

• stress-related cardiac palpitations
• dysmenorrhea and muscle spasms
• stress-related hypertension
• menopausal sleep disturbance
• support during benzodiazepine withdrawal

 

Is valerian root the same as Valium?

No, Valerian root and Valium (diazepam) are not the same. Diazepam binds GABA-A receptors at the α/γ subunits and causes physical dependence. Valerenic acid from valerian acts at the β2/β3 subunits, a different target, and does not cause dependence.

Clinical trials have found valerian comparable to low-dose diazepam for sleep quality without the dependency risk.

 

How long does valerian take to work for sleep?

Valerian root typically requires 2–4 weeks of consistent nightly use before full sleep benefits are realized.

Clinical dose: 400–900 mg standardized extract, taken 1–2 hours before bedtime.

It does not cause rebound insomnia when stopped.

 

Does valerian root cause next-day grogginess?

Clinical studies consistently show that valerian root does not impair reaction time, alertness, or concentration the morning after use. Studies in healthy elderly populations confirm no effect on psychomotor performance.

Safety First: What Every Practitioner and Consumer Needs to Know

The American Herbal Products Association (AHPA) classifies V. officinalis as:

Safety Class 1 — safe when used as directed

and

Interaction Class B — possible interactions with certain medications

This is a favorable safety profile. But “safe when used as directed” carries real meaning.

Safety Considerations — Essential Knowledge

CNS depressant interactions: Combining valerian with benzodiazepines, opioids, sedative antihistamines, or alcohol can produce additive sedation.

The same caution applies to sedative herbs, including:

• hops (Humulus lupulus)
• kava (Piper methysticum)
• passionflower (Passiflora incarnata)
• skullcap (Scutellaria lateriflora)

A thorough medication review is always warranted.

CYP450 interactions: At standard doses (375 mg/day), valerian does not significantly affect CYP3A4.

At higher doses (1,000 mg/day), it modestly inhibits CYP3A4 — relevant for clients taking statins, calcium channel blockers, or immunosuppressants.

Pregnancy and lactation: AHPA Category B1 — no evidence of increased fetal harm from limited use, but high doses and concentrated extracts should be avoided.

Prefer non-pharmacological approaches in the first trimester.

Dosage matters

Excessive doses can produce:

• stupor
• severe headache
• vomiting

Smaller, more frequent doses are preferable.

Never boil valerian root — heat destroys volatile oils and therapeutic constituents.

Why Quality and Sourcing Matter — Perhaps More Than You Think

At ACHS, whether we are sourcing Blue chamomile from our certified organic Hungarian distiller, Roman chamomile from a sustainably run Korean farm at 3,000 feet above sea level, or turmeric from Kerala, one principle never changes:

The plant’s therapeutic value is inseparable from the quality of its cultivation, harvest, drying, and storage.

Valerian is particularly vulnerable to degradation. Valepotriates, one of valerian’s key constituent classes, are unstable and decompose during improper drying and storage. The essential oil carrying serotonergic caryophyllene is similarly fragile. A poorly stored product may contain little of what made it valuable.

How to Choose a Quality Valerian Product

Standardization: Look for extracts standardized to 0.8–1.0% valerenic acid verified by HPLC analysis.

Identity verification:

Confirm:

• Latin binomial (Valeriana officinalis)
• plant part (root/rhizome)
• country of origin

Third-party testing

ISO-accredited laboratory testing for:

• heavy metals
• microbial contamination
• pesticide residues
• identity verification

Storage matters: Valerian should be stored in tightly sealed containers away from heat, light, and oxygen.

How to Use Valerian: Preparations, Dosages, and What Works When

Valerian is available in several preparations.

Standardized extract (capsule/tablet): 400–900 mg before bed — best studied for insomnia.

• Tincture: 3–5 mL, 3–4 times daily.
• Fluid extract: 1–3 mL, 3–4 times daily.
• Infusion (tea): 4–6 tablespoons, 3–4 times daily.
• Powder: ½–1 tsp, 3–4 times daily.
• Bath preparation: 4–5 drops essential oil or infused oil.

Time-Tested Formulas: Valerian in Practice

Knockout Drops — Classic Nervine Sleep Formula

1 oz Valerian root Valeriana officinalis
1 oz  Hops Humulus lupulus
1 oz  Skullcap Scutellaria lateriflora
1 oz  Passionflower Passiflora incarnata

Dose:

• 3–4 tablespoons infusion
• 5–10 drops extract
• 10–20 drops tincture

Nerve Tonic — For the Body That Has Been Through Too Much

1 oz Valerian root Valeriana officinalis
1 oz Skullcap Scutellaria lateriflora
½ oz Catnip Nepeta cataria
½ Tbs Coriander seeds Coriandrum sativum
¼ tsp Cayenne pepper Capsicum annuum

Dose: 4–6 tablespoons warm, 3–4 times daily.

The Bigger Picture: What the Headline Misses

When Fox News calls valerian “nature’s Valium,” they are reaching for shorthand that makes an unfamiliar plant legible to a broad audience. And I understand that. If even a fraction of those readers choose valerian instead of a benzodiazepine, that is meaningful.

But as herbalists and educators, we owe our students and clients something more precise. Valerian is not a pharmaceutical mimic.

It is an herb with:

• its own pharmacological fingerprint
• its own botanical intelligence
• a 2,000-year relationship with the human nervous system

It does not produce dependence. It does not cloud your morning. It works through the synergistic activity of more than 150 constituents. That full picture is what we teach at ACHS.edu.

Sleep well. And do so wisely. -Dorene Petersen

​​Interested in learning more about evidence-based herbal medicine? Explore herbal medicine programs at ACHS, or request more information today!

 

References

Antunes, J. N. B., Schunck, R. V. A., Dani, C., & Siqueira, I. R. (2025). Valeriana officinalis extract improves sleep quality in primary health care in Brazil: A controlled and quasi-experimental study. International Journal of Clinical Medicine and Case Reports, 49(5), 004. https://ijclinmedcasereports.com/ijcmcr-ra-id-01224/

Chandra Shekhar, H., Joshua, L., & Thomas, J. V. (2024). Standardized extract of Valeriana officinalis improves overall sleep quality in human subjects with sleep complaints: A randomized, double-blind, placebo-controlled, clinical study. Advances in Therapy, 41(1), 246–261. https://doi.org/10.1007/s12325-023-02708-6

Jenabi, E., Khazaei, S., Aghababaei, S., & Moradkhani, S. (2023). Effect of fennel-valerian extract on hot flashes and sleep disorders in postmenopausal women: A randomized trial. Journal of Menopausal Medicine, 29(1), 21–28. https://doi.org/10.6118/jmm.22026

 

This content is for educational purposes only and is not intended to be medical advice. Always use herbs and essential oils with caution and keep out of reach of children. Use particular caution when pregnant or nursing. Always check contraindications and think safety first! The statements herein have not been evaluated by the FDA. Products are not intended to diagnose, treat, cure, or prevent disease.