About Valerian

Plant commonly used as a natural remedy to promote relaxation, reduce anxiety, and improve sleep quality

Effectiveness Scores

Sleep Quality: 6.0/10 (moderate evidence).
Valerian helps promote sleep by calming the nervous system and shortening the time it takes to fall asleep. When used consistently for one to four weeks, it can improve how restful sleep feels and may modestly increase the amount of deep, slow-wave sleep (the most restorative phase). Its natural sedative effects generally last four to six hours and, unlike many sleep medications, usually don't cause grogginess the next morning.
Why this rating: Research shows valerian may help people feel like they sleep better, but the improvements are mostly subjective and vary widely between studies. Differences in valerian preparations, doses, and study quality contribute to mixed findings, and strong placebo effects are common. Objective sleep tests rarely confirm major changes, leading major sleep organizations, including the American Academy of Sleep Medicine, to advise against relying on valerian for chronic insomnia. Overall, it may provide mild, short-term relief for some users but lacks consistent evidence for significant clinical benefit.
Anxiety Relief: 5.0/10 (moderate evidence).
Valerian may help reduce mild or situational anxiety by calming the nervous system and promoting relaxation. It's thought to enhance the effects of gamma-aminobutyric acid (GABA), a neurotransmitter that helps regulate nerve activity and reduces overstimulation in the brain. By gently modulating this system, valerian can lessen tension, restlessness, and the physical symptoms of stress without strong sedative effects. It has been explored for several types of anxiety, including pre-surgical stress, premenstrual anxiety, and general nervousness.
Why this rating: While smaller studies suggest valerian may ease short-term or situational anxiety, the evidence is inconsistent and lacks large, well-designed clinical trials. The few available studies are often limited by small sample sizes, short duration, and varying doses or extract types. The most rigorous trial found no meaningful benefit compared to placebo. Valerian appears safe and may help some individuals relax, but stronger research is needed to confirm its effectiveness for clinical anxiety.

Dosage & Timeline

Standard Dosages

General recommendation: 300-600 mg

Results Timeline

Sleep: 2-4 weeks of nightly use may be needed to see optimal effectiveness
Anxiety: Four weeks of consistent use showed significant anxiety reduction in clinical studies

All other outcomes may be noticed after extended use or lack enough studies to establish an effectiveness timeline.

Safety Information

Pregnancy and breastfeeding: Valerian should be avoided during pregnancy and breastfeeding, as its safety in these situations has not been established. There is insufficient evidence on the potential effects on fetal development or infant health.
Drug interactions: Valerian can interact with other sedatives, anti-anxiety medications, and sleep aids (including alcohol, benzodiazepines, and barbiturates), potentially enhancing their effects and leading to excessive sedation. It may also interact with medications that affect the liver, as it can influence enzymes involved in drug metabolism.
Long-term use: The long-term safety of valerian is not well understood. Some reports suggest that it may be safe for short-term use (up to 4-6 weeks), but prolonged use should be monitored by a healthcare provider.
Surgery: Due to its sedative effects, valerian should be discontinued at least 2 weeks before surgery to avoid excessive sedation and interference with anesthesia.

Side Effects

Common side effects:

Drowsiness or grogginess, particularly if taken during the daytime
Mild gastrointestinal upset (nausea or bloating)
Headache or dizziness

Rare side effects:

Allergic reactions, such as skin rashes or difficulty breathing
Unusual vivid dreams or night terrors (reported by some users)

Valerian is generally well-tolerated, though it can cause drowsiness and impair cognitive function, especially if combined with other sedatives. Excessive doses may lead to increased sedation, confusion, or a hangover-like feeling the next day.

Usage Information

Valerian is intended to promote relaxation, reduce anxiety, improve sleep quality, alleviate muscle tension, and support overall calmness without the risk of addiction associated with prescription sedatives.

User Experience

User experiences with valerian are highly individual. Many report benefits such as faster sleep onset, longer uninterrupted sleep, reduced nighttime anxiety, and feeling refreshed in the morning, with typical dosages taken 30–60 minutes before bedtime. Users value its natural, non-addictive profile, and some find whole-root powder more effective than standardized extracts, suggesting multiple compounds contribute to its effects. Combination products with hops, passionflower, or lemon balm are also popular and may enhance efficacy.

However, negative experiences are common. Some users experience paradoxical stimulation, such as a racing heart, anxiety, or increased wakefulness, alongside nausea, headaches, palpitations, or morning grogginess. Effectiveness can vary: some notice immediate benefits, others require consistent nightly use, and a few report tolerance developing after a few days. The strong smell is frequently cited as unpleasant, though capsules mitigate this. Individual responses are unpredictable, and starting at a lower dose is generally recommended to assess tolerance.

Alternative Names

Valeriana officinalis

Valerian