When is the best time to take valerian before bed?

When using valerian-based medications to promote sleep, a good rule of thumb is to take them approximately 30-60 minutes before bedtime, if that's what the specific product label says. This interval is used in regulatory guidelines and in many clinical studies. For example, Health Canada's official monograph on valerian as a sleep aid recommends taking it 30-60 minutes before bedtime. [1]

However, 30-60 minutes is not a proven "ideal window" for valerian's best effects. Studies have used different preparations and different times: 300 mg of concentrated extract 30 minutes before bed, 450 mg of root an hour before bed, and 200 mg of standardized extract an hour before bed. The results of these studies varied widely, from no effect to improvements in some sleep parameters. Therefore, it cannot be claimed that taking it, for example, exactly 45 minutes before bed is objectively more effective than taking it an hour before. [2]

There's another important caveat: valerian is not a reliable, fast-acting sleep aid. The European Medicines Agency notes that for certain medications, the effect develops gradually, with a more noticeable result after approximately two weeks of use. However, the most recent umbrella review from 2024 did not confirm valerian as an effective treatment for insomnia, although subjective sleep quality may have improved in some people. [3]

Therefore, the practical recommendation is as follows: if a person does use valerian, it's best to take it at the same time every day, approximately half an hour to an hour before bedtime, and to follow the instructions for the specific medication, rather than trying to find the "perfect time." For chronic insomnia, it's much more important to determine the cause of the sleep disorder and use methods with a more convincing evidence base. [4]

Why is it usually recommended to sleep 30-60 minutes before bed?

The 30-60 minute interval was not chosen by chance: this is roughly how valerian has been used in many clinical studies and is traditionally used in registered herbal medicines. The official Canadian monograph specifically recommends taking valerian as a sleep aid 30-60 minutes before bedtime. [5]

The European Medicines Agency specifically emphasizes that its recommendations apply to herbal medicinal products that meet pharmaceutical quality requirements. Regular dietary supplements do not undergo the same assessment process. Therefore, the instructions for a specific registered product carry greater practical weight than a universal rule for any bottle labeled "valerian." [6]

Research confirms that this interval is indeed commonly used. In a randomized trial in elderly women, 300 mg of a concentrated extract was taken 30 minutes before bedtime. In a large study of patients undergoing cancer treatment, 450 mg of the root was taken one hour before bedtime. In a study of a standardized extract published in 2024, 200 mg of the preparation was also taken one hour before bedtime. [7]

However, these studies did not compare dosing intervals of 30, 60, and 120 minutes prior to determine the best time interval. Therefore, they conclude that a range of around 30 to 120 minutes was widely used, but it cannot be proven that this interval provides the maximum sleep-inducing effect.

What is known about the absorption time of valerian?

There are pharmacokinetic data that partially support the recommendation to take valerian beforehand, but these data should be interpreted with caution.

In a small study, six healthy adults received a single dose of 600 mg of valerian. Peak concentrations of valerenic acid, one of the chemical markers of valerian preparations, were observed in five of the six participants after approximately 1–2 hours. The substance remained detectable in the blood for at least five hours, and the average half-life was approximately 1.1 hours. [8]

The authors found these data consistent with the traditional use of valerian approximately 30 minutes to 2 hours before bedtime. However, the study was extremely small and measured blood valerenic acid concentrations, not the time at which people fell asleep most quickly. The very assumption that the concentration of this substance directly reflects the clinical effects of valerian is also unproven. [9]

A later pharmacokinetic study in elderly women showed significant interindividual variability in valerenic acid levels. This may be one reason why the same drug can be experienced differently by different people. [10]

Therefore, pharmacokinetics explains why taking valerian immediately after turning off the lights is not necessarily optimal, but does not allow for a universally accurate time to be calculated for each individual.

In 30 minutes or in an hour - which is better?

There is no convincing evidence that one of these options is better than the other.

A trial of taking valerian 30 minutes before bedtime showed no advantage over placebo in terms of time to fall asleep, duration of wakefulness at night, efficacy, or subjective sleep quality. Only 16 elderly women participated, making the study small, but it clearly demonstrates that even following the "correct" interval does not guarantee an effect. [11]

In another, much larger study, 450 mg of valerian was taken one hour before bedtime for eight weeks. The primary measure, the Pittsburgh Sleep Quality Index, also did not significantly improve compared to placebo.[12]

In contrast, a 2024 study in which participants took 200 mg of a specific standardized extract one hour before bedtime showed improvements in a number of subjective and objective measures. Eighty people participated, and 72 completed the study. The positive results were specific to the extract studied, not to all valerian preparations. [13]

Therefore, the existing data cannot be used to draw a rule that "60 minutes is more effective than 30." Rather, they demonstrate the significant impact of the drug itself, its standardization, the patient population, and the duration of use.

When to take	What can be said from the research data?
Just before going to bed	It has not been proven that this is the optimal time.
In 30 minutes	Frequently used in trials; no guaranteed effect
In 30-60 minutes	The most practical guideline for many medications
In 1 hour	Frequently used in clinical trials
In 1-2 hours	Pharmacokinetically possible, but no benefits over 30-60 minutes have been proven.
In a few hours	There is no universal need
After waking up at night	There is no proven scheme for such use.

Should I take valerian right before bed?

Not necessarily. The "before bedtime" formulation for valerian usually means taking it in the evening shortly before sleep, not taking a tablet the second a person gets into bed.

This makes practical sense: if the drug is taken 30-60 minutes before sleep, its absorption period begins even before attempting to fall asleep. In a pharmacokinetic study, valerenic acid concentrations often reached their maximum after approximately 1-2 hours. [14]

However, one cannot turn these data into a formula: “If I go to bed at 11:00 PM, I must take it exactly at 10:00 PM.” Pharmacokinetics varied significantly between people, and valerian is not a single active substance, but a complex herbal preparation. [15]

If the instructions for a specific medication recommend taking it half an hour before bedtime, it is wiser to follow them than to transfer the regimen from a study of another extract.

Why you shouldn't rely solely on "how long it takes for it to start working"

Valerian differs from drugs whose effect can be fairly predictably linked to a single dose and a specific concentration of the active substance.

Various products contain ground or powdered root, liquid extracts, dry extracts, or other forms. The EMA explicitly reviews several different preparations of Valeriana officinalis root. Furthermore, its public document emphasizes the distinction between herbal medicinal products and conventional dietary supplements. [16]

In one product, 300 mg may refer to a concentrated extract, while in another, it refers to the amount of root powder. Therefore, the same label, "500 mg valerian," does not guarantee the same chemical exposure or the same effect.

A 2020 meta-analysis also found significant heterogeneity across studies and pointed to differences between drug formulations and quality as one possible reason for the inconsistent results.[17]

In other words, the question “which drug?” is often more important than the question “in how many minutes?”

Will valerian work on the first night?

A reliable effect should not be expected after one dose.

In a study of older women, neither a single dose nor two weeks of taking a concentrated extract 30 minutes before bedtime resulted in statistically significant improvements in key sleep parameters compared with placebo.[18]

In its current public assessment, the EMA notes that the effect of a particular dry ethanol extract was more pronounced after approximately two weeks of use. The agency also recommends consulting a doctor or pharmacist if sleep disturbances persist or worsen after two weeks of continuous use of the medicinal product. [19]

This doesn't mean that valerian must be taken for two weeks for its effects to "build up." The clinical pharmacology here is more complex, and a convincing universal cumulative mechanism guaranteeing an effect after a certain number of days has not been established.

More precisely, some studies and a European regulatory assessment suggest that the potential effect is better seen with repeated use, but the overall level of evidence for the effectiveness of valerian for insomnia remains low. [20]

Can I take valerian earlier in the evening?

Sometimes the instructions for a specific medication call for taking it in the evening before the main dose, but this is not a universal regimen.

The documents underlying the European monograph described a single dose taken half an hour to an hour before bedtime, with possible earlier evening administration if needed. However, the exact regimen depends on the formulation of the drug and its registered instructions. [21]

In practice, this means that the "one tablet after dinner plus one more before bed" regimen shouldn't automatically apply to any valerian. The extract concentration and maximum daily dose vary among preparations.

In particular, you should not add an additional evening dose just because the first one “does not feel right”: the absence of pronounced drowsiness does not mean that you need to increase the amount of the drug.

Does it make sense to take valerian two hours before bed?

This option is within the ranges used or discussed in the literature, but there is no evidence for its superiority.

A pharmacokinetic study showed peak valerenic acid concentrations primarily 1–2 hours after ingestion of 600 mg of the extract. The authors considered this consistent with a range of 30 minutes to 2 hours before bedtime. [22]

However, the pharmacokinetic peak does not equate to the maximum clinical effect. The study included only six healthy adults and did not compare sleep quality across different dosing intervals.

Therefore, it is possible to take the drug two hours beforehand if the instructions for a particular product allow it and it is more convenient for the person, but it is incorrect to present this interval as a scientifically proven optimum.

Is it possible to take valerian after waking up at night?

There is no reliable data to support such a scheme.

Clinical studies have predominantly administered the drug before initial bedtime, rather than using it as an "on-demand" treatment after waking at 2:00 or 3:00 AM. For example, studies with 300 mg concentrated extract and 200 mg standardized extract used pre-scheduled evening dosing.[23]

This is significantly different from a drug that is specifically proven to be effective for nighttime awakening.

Furthermore, valerian can cause lethargy and drowsiness. The NCCIH warns of a possible sedative effect and does not recommend combining it with alcohol or other sedatives. Taking an additional dose during the night theoretically increases the risk of drowsiness upon awakening in the morning. [24]

Therefore, the universal recommendation “if you wake up at night, take some more valerian” is not supported by evidence.

At the same time or only when you can't sleep

If a person is using valerian in a course, taking it at approximately the same time each evening is more convenient for assessing the effect, although there is no evidence of any particular benefit from a strict schedule.

Many studies have used a regular schedule. For example, a 2024 trial instructed participants to take one capsule an hour before bed at the same time every day for 56 days. [25]

A consistent time reduces the number of additional variables: it's easier to understand whether the time it takes to fall asleep, the quality of sleep, or how you feel in the morning has changed. Taking the medication sometimes at 9:00 PM, sometimes after midnight, or only after a particularly difficult day makes it more difficult to assess its true effect.

But this is research and practical logic, and not proof that the body requires taking valerian on the dot.

Which is better: one dose before bed or several throughout the day?

For the "sleep aid" purpose, studies typically use an evening dose rather than multiple daytime doses.

The EMA differentiates between the use of valerian preparations for mild nervous tension and for sleep disorders. Treatment regimens may vary for different indications and different preparations. [26]

This is important because someone might see instructions online that say "take 2-3 times a day" and assume that multiple daily doses will necessarily enhance the evening effect. Such regimens are often associated with other indications or specific dosage forms and should not be automatically applied to the treatment of sleep problems.

If your goal is solely sleep, you should follow the instructions for the specific sleep aid/sleep disorder medication, rather than the maximum daily dosage of valerian in general.

When to drink valerian tea

There is no clear proven interval for infusion or tea. Regulatory monographs allow the ground root as one form of traditional medicinal use, but the evidence base for the different forms is not the same. [27]

A guideline of approximately 30-60 minutes before bedtime can also be used for evening valerian tea, if the instructions for a specific herbal medicinal product recommend this use. However, it cannot be guaranteed that the tea is absorbed and acts in the same way as a standardized dry extract.

Studies with positive and negative results used very different preparations: concentrated extracts, standardized products, and ground root.[28]

Therefore, the conclusion of the study on the tablet extract cannot be automatically transferred to a cup of home infusion.

Before or after meals

There's no proven, universal rule for taking valerian before bed. High-quality clinical data doesn't support the conclusion that taking it on an empty stomach improves its effectiveness or that it's less effective after dinner.

The studies focused on dose and timing relative to sleep, rather than a standardized comparison of fasting and postprandial administration. Therefore, it's important to follow the instructions for a specific medication, especially if they specify mealtime requirements.

If valerian causes nausea or abdominal discomfort, that also matters: the EMA lists nausea and abdominal cramps among the possible adverse effects of valerian root medicinal products.[29]

There is no reason to come up with a universal rule “only after meals” or “only on an empty stomach”.

Should the timing be adjusted based on the form of the drug?

Yes, primarily because different forms cannot be considered pharmacologically identical.

Form	How to approach the appointment time
Registered medicinal extract	Follow the instructions; often the guideline is 30-60 minutes before bedtime.
Standardized supplement	Follow the label, understanding that the evidence may not apply to this product.
Ground root / tea	Usually taken in the evening before bedtime; there is no exact proven interval
Tincture	Concentrations vary widely; refer to the instructions for the specific product.
A combination of valerian with hops, lemon balm, etc.	Recommendations for pure valerian cannot be automatically applied
Extra dose at night	There is no proven universal rescue scheme

The EMA specifically highlights the existence of powder, ground root, juice, liquid, and dry extracts. Regulatory conclusions regarding a specific dry ethanol extract cannot be automatically extended to all of these forms. [30]

If you go to bed at different times every day

It is better to tie the intake not to a fixed “22:00”, but to the planned sleep time.

If a person usually goes to bed at 11:00 PM, the 30-60 minute target would be approximately 10:00-10:30 PM. If another person's bedtime is scheduled for 12:30 AM, there's no point in taking the medication at 10:00 PM just because that's what happened yesterday.

Moreover, large daily fluctuations in sleep patterns themselves can be a separate cause of sleep problems. For chronic insomnia, treatment is not limited to the correct timing of pills: current European guidelines consider cognitive behavioral therapy for insomnia as a first-line treatment. [31]

Therefore, trying to “adapt valerian” to a chaotic schedule does not always solve the original problem.

What to do if valerian doesn't help within 30-60 minutes

The first thing you shouldn't do is automatically increase the dose or take it earlier and earlier.

Various well-controlled studies have used valerian 30 minutes or an hour before bedtime and still found negative results. Therefore, the lack of effect is not necessarily due to "wrong timing." [32]

The most recent umbrella review from 2024 analyzed eight systematic reviews and concluded that valerian lacks convincing empirical support as a treatment for insomnia. A possible benefit was observed primarily in subjective assessments of sleep quality, but was not reliably confirmed by quantitative or objective measures. [33]

And the 2023 European insomnia guidelines do not recommend herbal remedies for the short- or long-term treatment of insomnia due to insufficient evidence.[34]

Therefore, if a person uses the drug correctly but continues to sleep poorly, it is wiser to reconsider the treatment strategy itself, rather than looking for an even more precise interval between valerian and the pillow.

Should I wait two weeks before deciding if valerian works?

The EMA notes that for a particular dry ethanol extract, the results in studies became more noticeable after approximately two weeks. The agency's current page also recommends consulting a doctor or pharmacist if sleep disturbances persist or worsen after two weeks of continuous use of the medicine. [35]

But this does not mean that there is a universal rule: “You need to be patient for 14 days, and on the fifteenth day the drug will start working.”

For example, a modern study of 200 mg of standardized extract found some differences already at early observation points, while other studies found no convincing effect even after several weeks of use. [36]

Therefore, two weeks is more of a practical limit for reassessing the situation than a magical accumulation period.

Can I take valerian every night?

Short-term use is considered reasonably well tolerated in most adults, but the safety of long-term continuous use is less well studied.

The NCCIH reports that doses of 300-600 mg daily have been used with an acceptable safety profile in studies lasting up to six weeks, but emphasizes that long-term safety is unknown. These are safety data for the regimens studied, not a recommendation to take 300-600 mg daily for six weeks. [37]

Possible adverse effects include headache, upset stomach, lethargy, agitation, anxiety, and vivid dreams. After chronic use, symptoms have been described following abrupt withdrawal.[38]

If the drug has to be taken every night for months, the question is no longer so much about the time of taking it, but about the reason for the constant need for it.

Valerian and alcohol in the evening

It is not worth combining them.

The NCCIH recommends against taking valerian with alcohol or sedatives, as this may increase the central nervous system depressant effect.[39]

Therefore, the "glass of wine with dinner, then valerian before bed" regimen isn't made safe just by an interval of one or two hours. The effects of alcohol don't end the moment a person takes a pill.

Similarly, simply separating valerian and another sedative medication by a couple of hours does not guarantee the absence of a combined effect.

Valerian together with sleeping pills and sedatives

If a person is already taking a drug that causes drowsiness or depresses the central nervous system, adding valerian without discussing it with a doctor or pharmacist is not advisable.

The NCCIH explicitly warns of potential additive sedative effects. However, the EMA states that at the time of the assessment, no specific drug interactions with valerian root had been described in the literature. These statements are not inconsistent: the absence of a proven pharmacokinetic interaction does not mean the absence of additive drowsiness. [40]

Therefore, there is no proven universal rule of “sleeping pills at 10:00 pm, valerian at 8:00 pm – therefore the combination is safe.”

I still feel sleepy in the morning: should I take valerian earlier?

If pronounced morning sluggishness occurs after taking valerian, simply delaying the medication is not the only solution, nor is it necessarily the right one.

The EMA warns that valerian root preparations may affect the ability to drive and operate machinery. The NCCIH also lists a feeling of drowsiness among possible side effects. [41]

In such a situation, it is necessary to evaluate the dosage, form of the drug, other sedatives, alcohol, duration of sleep, and the need for valerian itself.

If an adverse effect is pronounced, it is more rational to stop the experiment and discuss the situation with a doctor or pharmacist than to independently delay the dose for several hours or reduce it by trial and error.

Why 30-60 minutes before bed is a practical guideline, not a proven formula

This is one of the most important things to understand the topic properly.

On the one hand, the range is in good agreement with regulatory guidelines, clinical trial practice, and pharmacokinetic observations. Health Canada recommends 30-60 minutes, many studies used 30 or 60 minutes, and a small pharmacokinetic study found peak valerenic acid concentrations at approximately 1-2 hours. [42]

On the other hand, none of these facts prove that the result is worse at 20 minutes and better at 60, because there is no high-quality comparative study of different time intervals.

Moreover, if the drug itself does not demonstrate a sustained effect in chronic insomnia, optimizing the timing of its administration is of limited value. The 2023 European Guideline and the VA/DoD 2025 do not recommend valerian for the treatment of chronic insomnia due to insufficient evidence. [43]

Practical algorithm

If a person nevertheless decides to use valerian specifically for sleep, a reasonable sequence looks like this:

1. Check what exactly is in the product: root, extract, standardized extract, or a combination of several plants.
2. Follow the instructions for the specific product.
3. Unless otherwise stated in the instructions, a typical guideline for medication is 30-60 minutes before planned sleep. [44]
4. Don't increase the dose just because there is no effect the first night.
5. Do not automatically add another dose when waking up at night.
6. Do not combine with alcohol or add to other sedatives without checking compatibility. [45]
7. If sleep problems persist, it is no longer necessary to evaluate the “correct timing of valerian,” but rather possible insomnia and its causes.

When the problem is no longer in the timing of taking valerian

If a person has difficulty falling or maintaining sleep several times a week for months and it is affecting daytime functioning, the issue goes beyond the timing of herbal supplementation.

The European Insomnia Guidelines recommend cognitive behavioral therapy for insomnia as a first-line treatment. Herbal remedies, including valerian, are not recommended due to insufficient evidence. [46]

The VA/DoD also recommends against the use of valerian for the treatment of chronic insomnia in its 2025 guidelines. The working group rated the quality of the evidence as very low and noted that the use of supplements without proven effectiveness may delay the receipt of more effective treatment. [47]

The most recent umbrella review from 2024 came to a similar conclusion: valerian may provide a subjective signal of improved sleep, but there is no evidence of its effectiveness as a treatment for insomnia. [48]

Therefore, the question "30 minutes or an hour?" is only relevant up to a certain point. If sleep remains poor regardless of the time of administration, the problem is likely not in those 30 minutes.

What is often misunderstood

"Valerian should be taken exactly one hour before bedtime." No. One hour is a common research and practice interval, not a proven optimal point. Thirty minutes, one hour, and other schedules have also been used. [49]

"If you take it earlier, it will work more." This has not been proven. Valerenic acid concentrations did indeed often peak after approximately 1-2 hours, but a link between this and clinical improvement in sleep has not been established. [50]

"If you haven't fallen asleep within an hour, you need to take another drink." There's no reliable evidence base for this approach, and an additional dose can increase drowsiness and other side effects. [51]

"Valerian should work on the first night." Not necessarily. Some studies and a European regulatory review suggest a more gradual onset of effect, but the evidence is generally conflicting. [52]

"500 mg of valerian is the same everywhere." No. Root powder and concentrated extract are different preparations, so milligrams cannot be compared without information on the composition and extraction method. The EMA separately distinguishes between many dosage forms of valerian root. [53]

Key points from experts

Christopher L. Drake, PhD, is a sleep medicine specialist, director of Sleep Research at Henry Ford Health, and professor of medicine at Michigan State University College of Human Medicine. He is board certified by the American Board of Sleep Medicine and has been involved in clinical research on insomnia and other sleep disorders for more than two decades. [54]

Drake co-authored a 2024 umbrella review of valerian. The research team concluded that existing systematic reviews do not support the effectiveness of valerian as a treatment for insomnia, although a subjective effect on sleep quality is possible. In the context of timing, this means that searching for the "perfect hour" does not address fundamental uncertainty about the effectiveness of the drug itself. [55]

Dieter Riemann, Prof. Dr. is Professor Emeritus at the University of Freiburg and a specialist in clinical psychophysiology, insomnia, psychotherapy, and sleep psychopharmacology. Since 2024, he has been a speaker for the German Sleep Society. His professional profile confirms his long-standing specialization in insomnia and the treatment of sleep disorders. [56]

Riemann is the first author of the 2023 European insomnia guidelines. The working group concluded that due to insufficient evidence, herbal interventions should not be recommended for the treatment of insomnia, whereas cognitive behavioral therapy for insomnia is first-line.[57]

Frequently Asked Questions

How many minutes before bed is it best to take valerian?

Typically, 30-60 minutes is the recommended time, unless the instructions for a specific medication specify a different time. This is a common regulatory and research protocol, but it has not been proven to be a universal optimum. [58]

Can I take it two hours before bed?

This interval can also be encountered. A pharmacokinetic study showed a peak of valerenic acid at approximately 1-2 hours, but the superiority of a two-hour interval has not been proven. [59]

Is it better in 30 minutes or in an hour?

No significant difference was found. Both options were used in studies. [60]

Is it okay to drink right before going to bed?

You can follow the medication instructions, but typically, valerian-based sleep aids are taken a little earlier. For many dosage forms, the guideline is 30-60 minutes. [61]

Do I need to take it at the same time every day?

A strict necessity has not been proven, but when used in courses, taking the medication at approximately the same time makes it easier to adhere to the regimen and evaluate the results. In one modern study, the drug was taken daily at the same time, one hour before bedtime. [62]

Can I take valerian if I wake up in the middle of the night?

There is no proven regimen for this use. Most trials examined administration before bedtime, not after waking up during the night.

How long does it take for valerian to start working?

There is no exact universal time. Valerenic acid, after one studied extract, reached its maximum concentration in approximately 1-2 hours, but this does not necessarily mean that the maximum hypnotic effect occurs at this point. [63]

Do I need to wait a few weeks?

Some European data suggests that the effects of certain supplements are more noticeable after about two weeks, but this does not guarantee effectiveness and does not automatically apply to all supplements.[64]

Can you take valerian after dinner?

There is no universal requirement regarding meals. Please refer to the instructions for the specific medication; evidence that taking it on an empty stomach improves sleep efficiency is insufficient.

Can I take it with a glass of wine before bed?

Not recommended. The NCCIH advises against combining valerian with alcohol due to the potential for increased sedative effects.[65]

If valerian doesn't help after an hour, does that mean the dose is too small?

No. The lack of effect may reflect the limited effectiveness of the drug itself, rather than an incorrect dose or timing. Clinical studies with correct evening use have repeatedly yielded negative results. [66]

Main

A practical guideline for taking valerian before bedtime is approximately 30-60 minutes before expected sleep onset, unless the instructions for a specific registered drug indicate otherwise. This is consistent with regulatory recommendations and many clinical trial designs. [67]

However, scientific evidence does not indicate that 30, 45, or 60 minutes are a proven optimal interval. Studies have used different administration times and have yielded conflicting results. The pharmacokinetics of valerenic acid only indirectly support a range of approximately two hours before bedtime, but do not demonstrate clinical superiority of a specific time. [68]

And most importantly, timing valerian intake does not make it a proven treatment for chronic insomnia. A current umbrella review, the European Insomnia Guidelines, and the VA/DoD 2025 all rate its evidence base as insufficient. [69]