Valerian Root

Quick answer: Valerian root is an herbal supplement made from the root of the Valeriana officinalis plant. People commonly use it to help fall asleep faster and improve sleep quality. Research results are mixed, with some studies showing modest benefits and others finding little difference compared with placebo. It is generally considered safe for short-term adult use, but it is not medical advice to start any supplement without talking to a healthcare professional.

What is valerian root?

Valerian root is a perennial herb native to Europe and parts of Asia, now also grown in North America. The dried root and underground stems are used to make capsules, tablets, teas, and tinctures. Its use dates back to ancient Greece and Rome, where it was valued for calming nerves. The plant contains several active compounds, including valerenic acid and valepotriates, which researchers believe may interact with GABA pathways in the brain. GABA is a neurotransmitter that helps quiet nervous system activity, which is one reason valerian is often marketed as a natural sleep aid.

Does valerian root help you sleep?

The evidence is inconsistent. Some clinical trials report that people taking valerian root fall asleep faster and rate their sleep quality higher than those taking a placebo. Other well-designed studies find no meaningful difference between valerian and a sugar pill. Part of the problem is that studies use different extracts, doses, and outcome measures, making results hard to compare. A systematic review of randomized trials concluded that the data are too mixed to recommend valerian as a proven treatment for insomnia. If you decide to try it, manage expectations: any benefit is likely to be modest rather than dramatic.

How does valerian root compare with other sleep options?

Compared with prescription sleep medications, valerian root generally has a milder effect and a different side-effect profile. It is not regulated as strictly as drugs, so potency can vary between brands. The table below shows a high-level difference between common approaches.

Option	Typical use	Evidence strength	Common considerations
Valerian root	300–600 mg, 30–60 minutes before bed	Mixed; modest effects in some trials	Variable potency; possible drowsiness
Melatonin	0.5–5 mg, timed to circadian phase	Stronger for jet lag and shift work	Hormonal supplement; timing matters
CBT-I	Structured 4–8 session program	First-line, strongest evidence for chronic insomnia	Requires time and a trained provider
Prescription sleep aids	Short-term use under medical supervision	Effective for acute insomnia	Risk of dependence and side effects

For chronic insomnia, cognitive behavioral therapy for insomnia (CBT-I) is widely regarded as the first-line approach. You can read more about how it works in our guide CBT-I for insomnia.

Typical dosage and timing

Most studies that found a benefit used between 300 and 600 milligrams of valerian root extract, taken about 30 to 60 minutes before bedtime. Some products suggest taking it for several weeks before judging results, while others recommend use only on occasional nights. Because supplements are not standardized like prescription drugs, one brand’s 300 mg capsule may contain a different amount of active compounds than another’s. Look for products that list a standardized extract or undergo third-party testing. Start with the lowest dose on the label and avoid combining valerian with alcohol or other sedatives unless a clinician says it is safe.

Safety, side effects, and interactions

Valerian root is generally well tolerated for short-term use in healthy adults, typically up to four to six weeks. The most commonly reported side effects are mild and include headache, dizziness, stomach upset, and daytime drowsiness. Some people experience vivid dreams or a paradoxical feeling of stimulation instead of sedation. It may interact with medications that depress the central nervous system, such as benzodiazepines, certain antidepressants, and sleep aids. Long-term safety data are limited, and it is not recommended for children, pregnant people, or those who are breastfeeding without medical guidance. Stop use and contact a healthcare provider if you notice unusual symptoms.

How to try valerian root safely

If you and your healthcare provider decide valerian root is appropriate for you, follow these practical steps.

1. Talk with a doctor or pharmacist, especially if you take prescription medications or have a health condition.
2. Choose a product that lists a standardized extract and, ideally, third-party testing on the label.
3. Start with the lowest dose shown on the package, taken 30 to 60 minutes before bed.
4. Use it for no more than a few weeks at a time unless a clinician advises otherwise.
5. Avoid alcohol and other sedatives while using valerian root.
6. Keep a simple sleep log to track whether you notice any change in how quickly you fall asleep or how rested you feel.

When to seek professional help

Occasional sleepless nights are common, but ongoing trouble falling or staying asleep may signal an underlying sleep disorder. If insomnia lasts more than three months, happens at least three nights per week, and affects your daytime functioning, it may be chronic insomnia. Other red flags include loud snoring, gasping during sleep, or persistent daytime sleepiness, which could point to sleep apnea. Learn more about warning signs in our article sleep apnea symptoms. A sleep specialist can help determine whether behavioral therapy, medication, or another approach is right for you.

FAQ

Is valerian root safe for everyone?

No. It is generally considered safe for healthy adults for short-term use, but it is not recommended for children, pregnant people, or those who are breastfeeding without medical advice. People taking sedatives or certain antidepressants should consult a clinician first.

How long does it take to work?

Most products are taken 30 to 60 minutes before bedtime. Some studies suggest benefits may appear after a few nights, while others use several weeks of nightly dosing before evaluating results.

Can I take valerian root every night?

Short-term nightly use, often up to four to six weeks, is commonly studied. Long-term safety data are limited, so discuss ongoing use with a healthcare provider.

Does valerian root cause grogginess the next day?

Some users report mild morning drowsiness, headache, or stomach upset. Effects vary by person and dose, and not everyone experiences side effects.

Is valerian root better than melatonin?

Neither is clearly superior. Melatonin has stronger evidence for circadian rhythm issues such as jet lag, while valerian root’s evidence for insomnia is mixed. They work through different mechanisms and are sometimes used for different situations.

Where can I learn more about sleep basics?

Our overview of the four stages of sleep explains how sleep cycles work and why they matter for rest.