Interactions on record — worth a quick check against your medications. Based on 1 of 2 ingredients. Check your meds →
Dietary supplement

Peaceful Sleep Ingredients & Drug Interactions

by Nature's Harmony

Capsule Category: Botanical
Most serious interaction: Moderate
The interaction bottom line Most serious interaction: Moderate

Peaceful Sleep is a dietary supplement by Nature's Harmony with 2 active ingredients. Its ingredients are commonly taken for insomnia and poor sleep, anxiety and stress, restlessness.Based on those ingredients, 902 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Valerian (Valeriana officinalis L.) root 10:1 extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

HelloPharmacist Scorecard of Peaceful Sleep by Nature's Harmony

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 2 of its 2 active ingredients.
  • No proprietary blends here — you can verify the dose of every single component.

Peaceful Sleep contains 2 active ingredients. Valerian root (a 10:1 extract) is the established one — it's a plant remedy traditionally used to promote relaxation and sleep.

Seditol(R) is also listed, though we hold no detailed information on this ingredient. The capsule also contains inactive ingredients — silicon dioxide, maltodextrin, cellulose, magnesium stearate, and gelatin — which are fillers, binders, and the capsule material itself.

Does it work?

Moderate evidence
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Moderate

Some clinical evidence supports this product's ingredients for its stated purpose, but it isn't conclusive.

Why this rating?
  • The label markets this product for: sleep aid and relief of nervousness.
  • We looked for evidence on: Insomnia, Stress, Pre-procedural anxiety, anxiety, nervousness, sleep quality.
  • The strongest evidence on file: Valerian is rated "Possibly Effective" for Insomnia (Natural Medicines).
  • Also on file: Valerian is rated "Insufficient Reliable Evidence To Rate" for Pre-procedural anxiety, Stress.

Valerian for insomnia is rated possibly effective — meaning there's some evidence it may help, but it's not conclusive. For restless legs syndrome, pre-procedural anxiety, stress, and period pain (dysmenorrhea), the evidence isn't established enough for us to rate it.

The evidence, ingredient by ingredient Valerian

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Valerian is generally well tolerated in the short term, but long-term safety hasn't been well studied. The most common side effects are dizziness, drowsiness, mental slowness, headache, stomach upset, excitability, and vivid dreams.

If you take it for weeks or months and then stop suddenly, withdrawal symptoms like faster heartbeat, anxiety, irritability, and insomnia can occur — so taper your dose slowly rather than stopping cold. Valerian is best avoided during pregnancy and breastfeeding because safety hasn't been established.

There are rare reports of liver injury linked to multi-ingredient products containing valerian, though causality is hard to prove. If you develop yellowing skin or eyes, dark urine, or unusual fatigue while taking this product, contact your doctor.

Side effects, ingredient by ingredient Valerian

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Valerian.
  • The most serious interaction on file is rated Moderate.
  • For scale: 903 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Before taking this product, check with your doctor or pharmacist if you take sedatives, sleeping pills, opioids, or other CNS depressants (Moderate severity) — valerian can add to their drowsiness and impair your alertness. Also flag alprazolam (Xanax), alcohol, and any drugs that your pharmacist says are metabolized by glucuronidation (Moderate severity).

Minor interactions exist with CYP2D6 and CYP3A4 substrates, but clinical studies suggest these are unlikely to matter much in practice.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with some supporting evidence for its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

Peaceful Sleep may help with insomnia, but valerian interacts with a wide range of medications, especially sedatives, alcohol, and certain liver-metabolized drugs. If you take any prescription medication, use the checker on this page to see if there's a documented interaction, then talk it over with your own doctor or pharmacist before starting.

Pregnant or breastfeeding? Skip it and check with your provider.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 2 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated May 24, 2013.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Peaceful Sleep, straight from the product label.

Brand Nature's Harmony
Net contents 30 Capsule(s)
Market status On market
Date entered into DSLD May 24, 2013
DSLD ID 21711
Product type Botanical
Supplement form Capsule
Dietary claims / uses All Other
Intended target group(s) Adult (18 - 50 Years), Gluten Free, Dairy Free
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Peaceful Sleep by Nature's Harmony, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
1 Capsule(s)
Maximum serving Sizes:
1 Capsule(s)
IngredientAmount% DV
Seditol(R)365 mg--
Valerian (Valeriana officinalis L.) root 10:1 extract100 mg--

Other ingredients: Silicon Dioxide, Maltodextrin, Cellulose, Magnesium Stearate, Gelatin

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
General Statements

Helps to Promote Sleep

{Capsule} Actual Size

A Proud Canadian Company

UPC CODE TO BE: 0 63047 00131 7

Suggested/Recommended/Usage/Directions

Recommended Use: Traditionally used (in Western herbalism) as a sleep aid and to relieve nervousness (calmative/sedative). Recommended Dose (Adults): For relief of nervousness and as a sleep aid: Take 1 capsule daily. To promote sleep: Take 1 capsule thirty minutes to one hour before bedtime.

Precautions

Risk Information: Consult a health care practitioner prior to use if pregnant or breastfeeding, or if sleeplessness persists continuously for more than three weeks (chronic insomnia) or worsens. Consumption with alcohol, drugs or natural health products with sedative properties is not recommended.

Exercise caution if operating heavy machinery or driving a motor vehicle within two hours of consumption.

KEEP OUT OF REACH OF CHILDREN.

DO NOT USE IF SEAL UNDER CAP IS BROKEN.

Formulation

This product does not contain dairy, egg, gluten, shellfish, soy, sulfites or artificial colours, flavours or preservatives.

Storage

STORE IN A COOL, DRY PLACE.

Formula

Seditol(R) with Valerian Natural Plant Extracts

General

400131.01-02

Seals/Symbols

SunOpta A healthy products company

Brand IP Statement(s)

Seditol(R) is a registered trademark of NPI, LLC.

See for yourself

Peaceful Sleep by Nature's Harmony label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

What’s inside

The Ingredients in Peaceful Sleep by Nature's Harmony

These are the 2 active ingredients this product is made of. Select any to open its full monograph.

Serving size1 Capsule(s) Dosage formCapsule Amounts shown are per serving.

Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.

Seditol(R)

365 mg per serving Form: Magnolia officinalis, Ziziphus spinosa
100 mg per serving

Valerian is an herb whose root is widely used as a natural sleep aid and for calming nerves. The evidence is mixed and often weak, so it may help some...

Valerian (Valeriana officinalis L.) root 10:1 extract monograph & interactions

Other (inactive) ingredients: Silicon Dioxide, Maltodextrin, Cellulose, Magnesium Stearate, Gelatin. These complete the product’s ingredient list but are not active constituents.

Interaction report

Peaceful Sleep by Nature's Harmony Drug Interactions

Want to check YOUR meds against Peaceful Sleep?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

Go to the checker
902Drugs
338 Moderate 564 Minor

Ingredients driving the most interactions

Each ingredient & the kinds of drugs it affects

For each ingredient in Peaceful Sleep with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

Valerian (Valeriana officinalis L.) root 10:1 extract6 drug types · 902 drugs

Alcohol (Ethanol)

Valerian can have additive sedative effects when used concomitantly with alcohol.
Valerian has sedative effects. Theoretically, valerian might have an additive sedative effect when combined with alcohol. Excessive sedation has been reported in an alcohol-abusing individual who took valerian and Gingko biloba. However, the potential interaction between valerian and alcohol has been disputed in other research. Limited evidence suggests that a combination of valerian 160 mg and lemon balm 80 mg (Euvegal) does not cause further deterioration in reaction ability and reaction rate when taken with alcohol as compared to the effects of alcohol alone.

Likelihood Possible Evidence B
Alprazolam (Xanax)

Valerian can have additive sedative effects when used with alprazolam. Also, valerian in high doses might modestly increase alprazolam levels, though this is not likely to be clinically significant.
Valerian has sedative effects. Theoretically, valerian might cause additive sedation when combined with alprazolam. Also, a small pharmacokinetic study shows that taking valerian extract 1000 mg daily (providing 11 mg valerenic acid) might increase alprazolam levels by about 19%. This might be due to valerian's mild inhibition of cytochrome P450 3A4 (CYP3A4). Despite being statistically significant, this increase is not likely to be clinically significant.

Likelihood Possible Evidence B
Cns Depressants

Valerian can have additive sedative effects when used concomitantly with CNS depressant drugs.
Theoretically, concomitant use of valerian and drugs with sedative and anesthetic properties may cause additive therapeutic and adverse effects.

Likelihood Possible Evidence D
Glucuronidated Drugs

Valerian might weakly inhibit glucuronidation and increase concentrations of drugs metabolized by UGT1A1 and UGT2B7.
In vitro research shows that methanolic valerian extract and valerenic acid might competitively inhibit UDP-glucuronosyltransferase (UGT) 1A1 (UGT1A1) and UGT2B7.

Likelihood Possible Evidence D
Cytochrome P450 2D6 (Cyp2D6) Substrates

Valerian does not seem to have a clinically relevant effect on levels of drugs metabolized by CYP2D6.
Although some in vitro evidence suggests that valerian affects CYP2D6, clinical pharmacokinetic (PK) studies show that valerian is unlikely to affect the CYP2D6 enzyme. In one PK study, taking valerian 1000 mg (providing about 11 mg valerenic acid) nightly for 14 days did not affect the metabolism of dextromethorphan, a CYP2D6 substrate. In another PK study, taking valerian 125 mg three times daily for 28 days did not affect metabolism of debrisoquine, an accepted CYP2D6 probe-substrate.

Likelihood Unlikely Evidence B
Cytochrome P450 3A4 (Cyp3A4) Substrates

Valerian does not seem to have a clinically relevant effect on levels of drugs metabolized by CYP3A4.
Although some in vitro evidence suggests that valerian extract might inhibit or induce CYP3A4, clinical pharmacokinetic (PK) studies show that valerian does not have a clinically significant effect on the CYP3A4 enzyme. In one PK study, taking valerian 125 mg three times daily for 28 days did not affect metabolism of midazolam, an accepted CYP3A4 probe-substrate. In another PK study, taking valerian 1000 mg (providing about 11 mg valerenic acid) nightly for 14 days modestly increases levels of alprazolam, a CYP3A4 substrate, suggesting mild inhibition of CYP3A4. However, this mild inhibition is unlikely to be clinically relevant.

Likelihood Possible Evidence B
The maker

Brand information

Manufacturer and brand details for Peaceful Sleep, from the product label.

Nature's Harmony

See all Nature's Harmony products
Name
SunOpta Inc.
Street Address
6 Commerce Crescent
City
Acton
State
ON
ZipCode
L7J 2X3
Pharmacist Counseling Corner

Peaceful Sleep by Nature's Harmony: Common Questions

Does Peaceful Sleep by Nature's Harmony interact with any medications?
Yes. Based on its ingredients, Peaceful Sleep has a known interaction with 902 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Peaceful Sleep contains 2 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Can I take this with my sleeping pill?
Probably not without checking first. Valerian adds to the sedative effects of sleeping pills, which could make you dangerously drowsy or slow-thinking. Run your specific medication through the checker on this page, or ask your doctor or pharmacist before combining them.
What's the most common side effect?
Dizziness and drowsiness. Some people also report mental slowness, headache, stomach upset, or vivid dreams. These are usually mild and happen while you're taking it.
Can I take this long-term?
Valerian is generally well tolerated in the short run, but long-term safety hasn't been studied closely. If you do take it for weeks or months, don't stop suddenly — taper your dose slowly to avoid withdrawal symptoms like anxiety, insomnia, and a racing heartbeat.
Is it safe if I'm pregnant or breastfeeding?
No. Safety data isn't available for either pregnancy or breastfeeding, so valerian is best avoided. Talk with your doctor or midwife about what's right for your situation.
Does this really work for insomnia?
Evidence suggests it may help — it's rated possibly effective for insomnia. That means some research supports it, but it's not a sure thing. Results vary person to person.
Can I drink alcohol with this?
No. Valerian and alcohol both sedate you, and together they can cause excessive drowsiness and impaired judgment. Avoid alcohol while taking this product.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Not sure if Peaceful Sleep is safe with your meds?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Peaceful Sleep label
Sources

Sources & How We Checked

Peaceful Sleep's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 37 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Valerian 37 references
  1. Willey LB, Mady SP, Cobaugh DJ, Wax PM. Valerian overdose: a case report. Vet Hum Toxicol 1995;37:364-5.
  2. Kuhlmann J, Berger W, Podzuweit H, Schmidt U. The influence of valerian treatment on "reaction time, alertness and concentration" in volunteers. Pharmacopsychiatry 1999;32:235-41. PubMed
  3. Klepser TB, Klepser ME. Unsafe and potentially safe herbal therapies. Am J Health Syst Pharm 1999;56:125-38. PubMed
  4. Houghton PJ. The scientific basis for the reputed activity of Valerian. J Pharm Pharmacol 1999;51:505-12. PubMed
  5. Garges HP, Varia I, Doraiswamy PM. Cardiac complications and delirium associated with Valerian root withdrawal. [Letter to the Editor]. JAMA 1998;280:1566-7. PubMed
  6. Budzinski JW, Foster BC, Vandenhoek S, Arnason JT. An in vitro evaluation of human cytochrome P450 3A4 inhibition by selected commercial herbal extracts and tinctures. Phytomedicine 2000;7:273-82. PubMed
  7. MacGregor FB, Abernethy VE, Dahabra S, et al. Hepatotoxicity of herbal remedies. BMJ 1989;299:1156-7. PubMed
  8. Leathwood PD, Chauffard F. Aqueous extract of valerian reduces latency to fall asleep in man. Planta Med 1985;2:144-8. PubMed
  9. Hadley S, Petry JJ. Valerian. Am Fam Physician 2003;67:1755-8..
  10. Glass JR, Sproule BA, Herrmann N, et al. Acute pharmacological effects of temazepam, diphenhydramine, and valerian in healthy elderly subjects. J Clin Psychopharmacol 2003;23:260-8. PubMed
  11. Lefebvre T, Foster BC, Drouin CE, et al. In vitro activity of commercial valerian root extracts against human cytochrome P450 3A4. J Pharm Pharmaceut Sci 2004;7:265-73.
  12. Yuan CS, Mehendale S, Xiao Y, et al. The gamma-aminobutyric acidergic effects of valerian and valerenic acid on rat brainstem neuronal activity. Anesth Analg 2004;98:353-8. PubMed
  13. Donovan JL, DeVane CL, Chavin KD, et al. Multiple night-time doses of valerian (Valeriana officinalis) had minimal effects on CYP3A4 activity and no effect on CYP2D6 activity in healthy volunteers. Drug Metab Dispos 2004;32:1333-6. PubMed
  14. Gurley BJ, Gardner SF, Hubbard MA, et al. In vivo effects of goldenseal, kava kava, black cohosh, and valerian on human cytochrome P450 1A2, 2D6, 2E1, and 3A4/5 phenotypes. Clin Pharmacol Ther 2005;77:415-26. PubMed
  15. Gutierrez S, Ang-Lee MK, Walker DJ, Zacny JP. Assessing subjective and psychomotor effects of the herbal medication valerian in healthy volunteers. Pharmacol Biochem Behav 2004;78:57-64. PubMed
  16. Jacobs BP, Bent S, Tice JA, et al. An internet-based randomized, placebo-controlled trial of kava and valerian for anxiety and insomnia. Medicine (Baltimore) 2005;84:197-207. PubMed
  17. National Toxicology Program, US Department of Health and Human Services. Chemical Information Review Document for Valerian (Valeriana officinalis L.) [CAS No. 8057-49-6] and Oils [CAS No. 8008-88-6]. Supporting Nomination for Toxicological Evaluation by t
  18. Fernández-San-Martín MI, Masa-Font R, Palacios-Soler L, et al. Effectiveness of Valerian on insomnia: a meta-analysis of randomized placebo-controlled trials. Sleep Med. 2010 Jun;11:505-11. PubMed
  19. Coxeter PD, Schluter PJ, Eastwood HL, et al. Valerian does not appear to reduce symptoms for patients with chronic insomnia in general practice using a series of randomised n-of-1 trials. Complement Ther Med. 2003 Dec;11:215-22. PubMed
  20. Diaper A, Hindmarch I. A double-blind, placebo-controlled investigation of the effects of two doses of a valerian preparation on the sleep, cognitive and psychomotor function of sleep-disturbed older adults. Phytother Res. 2004 Oct;18:831-6. PubMed
  21. Cuellar NG, Ratcliffe SJ. Does valerian improve sleepiness and symptom severity in people with restless legs syndrome? Altern Ther Health Med 2009;15:22-8.
  22. Chen D, Klesmer J, Giovanniello A, et al. Mental status changes in an alcohol abuser taking valerian and gingko biloba. Am J Addict. 2002 Winter;11:75-7. PubMed
  23. Albrecht M, Berger W, Laux P, Schmidt U, et al. Psychopharmaka und Verkehrssicherheit. Der Einfluß von Euvegal® - Dragees forte auf die Fahrtüchtigkeit und Kombinationswirkungen mit Alkohol Z Allg Med 1995;71:1215-25.
  24. Carrasco MC, Vallejo JR, Pardo-de-Santayana M, et al. Interactions of Valeriana officinalis L. and Passiflora incarnata L. in a patient treated with lorazepam. Phytother Res. 2009 Dec;23:1795-6.
  25. Hellum BH, Nilsen OG. The in vitro inhibitory potential of trade herbal products on human CYP2D6-mediated metabolism and the influence of ethanol. Basic Clin Pharmacol Toxicol. 2007 Nov;101:350-8.
  26. Hellum BH, Hu Z, Nilsen OG. The induction of CYP1A2, CYP2D6 and CYP3A4 by six trade herbal products in cultured primary human hepatocytes. Basic Clin Pharmacol Toxicol. 2007 Jan;100:23-30. PubMed
  27. Alkharfy, K. M. and Frye, R. F. Effect of valerian, valerian/hops extracts, and valerenic acid on glucuronidation in vitro. Xenobiotica 2007;37(2):113-123.
  28. Vassiliadis, T., Anagnostis, P., Patsiaoura, K., Giouleme, O., Katsinelos, P., Mpoumponaris, A., and Eugenidis, N. Valeriana hepatotoxicity. Sleep Med 2009;10(8):935. PubMed
  29. Muller, Z., Sarkany, A., Altorjay, A., Szilagyi, A., Tura, T., and Ozsvar, Z. [Liver failure a la Eastern Europe]. Orv.Hetil. 3-22-2009;150(12):555-557. PubMed
  30. National Toxicology Program, US Department of Health and Human Services. Chemical Information Review Document for Valerian (Valeriana officinalis L.) [CAS No. 8057-49-6] and Oils [CAS No. 8008-88-6]. 2009;
  31. Wells SR. International intravenous administration of a crude valerian root extract. NACCT 1995;33:542.
  32. Aydinoglu U, Özcan H, Yücel A, Yücel N, Mutlu M. Valerian induced hypomania: a case report. Bull Clin Psychopharma 2012;22(Suppl. 1):S63.
  33. Mirabi P, Mojab F. The effects of valerian root on hot flashes in menopausal women. Iran J Pharm Res 2013;12(1):217-22.
  34. Thomas K, Canedo J, Perry PJ, et al. Effects of valerian on subjective sedation, field sobriety testing and driving simulator performance. Accid Anal Prev. 2016 Jul;92:240-4. PubMed
  35. Kia YH, Alexander S, Dowling D, Standish R. A case of steroid-responsive valerian-associated hepatitis. Intern Med J. 2016 Jan;46(1):118-9. PubMed
  36. Burke H, Jiang S, Chatham P, Stern TA. Delirium After Withdrawal From Valerian Root: A Case Report. Psychosomatics. 2020;61(6):787-790. PubMed
  37. Hajizadeh I, Jamshidi M, Kazemi M, Kargar H, Sadeghi T. Comparison the effect of valerian and gabapentin on RLS and sleep quality in hemodialysis patients: A randomized clinical trial. Ther Apher Dial 2023.

See these in context on the Valerian monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

Keep exploring