Major interaction on record — check this product against your medications before combining. Based on 2 of 3 ingredients. Check your meds →
Dietary supplement

Sleep Soundly Ingredients & Drug Interactions

by NutritionWorks

Sleep Soundly label
See full label image
Other (e.g. Tea Bag) Category: Botanical With Nutrients
Most serious interaction: Major
Clinical methodology reviewed by · Updated Sep 9, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Sleep Soundly against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Major

Sleep Soundly is a dietary supplement by NutritionWorks with 3 active ingredients. Its ingredients are commonly taken for preventing or treating magnesium deficiency, constipation, muscle cramps.Based on those ingredients, 1,100 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Valerian extract, Magnesium. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Sleep Soundly by NutritionWorks

Ask about any prescription or over-the-counter medication and we check it for interactions with Sleep Soundly by NutritionWorks — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Sleep Soundly by NutritionWorks

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

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Sep 10, 2026

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 3 of its 3 active ingredients.
  • No proprietary blends here — you can verify the dose of every single component.

Sleep Soundly contains 3 active ingredients. Magnesium is a mineral involved in muscle and nerve function and is used to support several conditions, including constipation and dyspepsia (indigestion).

Valerian extract comes from the valerian plant and is traditionally used to promote relaxation and sleep. We hold no interaction data for wild jujube extract, so we cannot assess its role in this formulation.

The product also contains inactive ingredients — fillers, binders, and a protective film coat — including dicalcium phosphate, guar gum, stearic acid, calcium carbonate, microcrystalline cellulose, anise oil, citrus pectin, magnesium stearate, silica, and film coat ingredients.

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: help you get the rest you need.
  • We looked for evidence on: Insomnia, Postoperative sleep disturbance, Sleep deprivation, sleep quality, sleep onset, sleep maintenance.
  • The strongest evidence on file: Valerian is rated "Possibly Effective" for Insomnia (Natural Medicines).
  • Also on file: Magnesium is rated "Insufficient Reliable Evidence To Rate" for Sleep deprivation, Postoperative sleep disturbance.

Magnesium is effective for constipation and indigestion (dyspepsia). For sleep and relaxation, valerian extract is rated as possibly effective for insomnia — meaning there's some evidence, but it's not definitive.

Valerian's effectiveness for restless legs syndrome, pre-procedural anxiety, stress, and period pain (dysmenorrhea) is not well established in the data we hold. We have no effectiveness data on file for wild jujube extract.

The evidence, ingredient by ingredient Magnesium 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 2 of the 2 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 2 of 2.
  • General safety write-ups exist for 2 of 2.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Magnesium is generally well tolerated at recommended doses from food and supplements. Oral side effects are usually mild — diarrhea, upset stomach, nausea, and vomiting.

In rare cases, very high doses can cause more serious issues. Magnesium is needed in pregnancy, but use supplements only under your doctor's guidance.

Normal dietary amounts are fine while breastfeeding, but check with your doctor before taking supplements. Valerian is generally well tolerated short-term, though long-term safety is not well studied.

Common side effects are dizziness, drowsiness, mental slowness, headache, stomach upset, and vivid dreams. When you stop after long-term use, taper slowly to avoid withdrawal symptoms like anxiety, rapid heartbeat, and insomnia.

Safety data advises against valerian in pregnancy and breastfeeding. We have no pregnancy or breastfeeding safety data on file for wild jujube extract.

Side effects, ingredient by ingredient Magnesium Valerian

Meds to double-check

Major interaction found
Known Interaction Concern · database check
Major identified

At least one ingredient has a documented Major-severity interaction. Check your medications for a personalized result.

Why this rating?
  • 2 of the 2 matched ingredients can interact with medications — Valerian, Magnesium.
  • The most serious interaction on file is rated Major.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; diabetes medications; heart-rhythm medications; Parkinson's medications.
  • For scale: 1,101 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 Sleep Soundly, double-check these medication types with your doctor or pharmacist: Parkinson's medications (levodopa/carbidopa) — magnesium cuts their effectiveness; blood pressure drugs, especially calcium channel blockers; diabetes medications; water pills, particularly potassium-sparing types; bone medications (bisphosphonates); antibiotics, especially quinolones; acid reducers; any sedating or central nervous system depressant drugs; alprazolam (Xanax); and alcohol.

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. Major medication interactions have been identified, and safety information is well characterized.

Sleep Soundly is designed for sleep support through valerian, which shows modest evidence, paired with magnesium, which is well tolerated at recommended doses. If you take Parkinson's medication (levodopa/carbidopa), blood pressure drugs, diabetes medications, bone drugs, antibiotics, or any sedating medication or drink alcohol, you'll need to check this product against your exact meds first.

Talk with your doctor or pharmacist before starting, especially if you're pregnant, breastfeeding, or taking any prescription drugs.

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

Assessment coverage: 2 of 3 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Apr 25, 2014.

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 Sleep Soundly, straight from the product label.

Brand NutritionWorks
Barcode (UPC) 035046061395
Net contents 45 Caplet(s)
Market status On market
Date entered into DSLD Apr 25, 2014
DSLD ID 32373
Product type Botanical With Nutrients
Supplement form Other (e.g. Tea Bag)
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years)
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 Sleep Soundly by NutritionWorks, 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 Caplet(s)
Maximum serving Sizes:
1 Caplet(s)
UPC/BARCODE
035046061395
IngredientAmount% DV
Magnesium50 mg12%
Valerian extract200 mg--
wild jujube extract75 mg--

Other ingredients: Dicalcium Phosphate, Guar Gum, Stearic Acid, Calcium Carbonate, Microcrystalline Cellulose, anise oil, citrus pectin, Magnesium Stearate, Silica, film coat ingredients

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.
FDA Statement of Identity

Dietary Supplement

General Statements

Made in the U.S.A.

Don't let another day go by feeling tired and drained. Awaken feeling refreshed and energized instead.

- HELPS YOU FALL ASLEEP FAST - 8 HOUR RELEASE HELPS ASSURE A GOOD NIGHTS SLEEP

Take to Help Promote a Restful and Peaceful Sleep. For Restful & Peaceful Sleep

Valerian root is approved by the German Commission E for nervousness. Medical folklore teaches that Wild Jujube seeds may help calm the mind. Recent studies suggest that magnesium may help with tension.

Natural Herbal Supplement Restful - Peaceful - Tranquil Sleep - Helps You Sleep Soundly - Awaken Fresh & Energized

Brand IP Statement(s)

(C)2006 Windmill(TM) Health Products All rights reserved.

Take Sleep Soundly(TM), the powerful natural supplement designed to help you to get the rest you need.

PATENTED 8 HOUR RELEASE

Sleep Soundly(TM) is a powerful dietary supplement designed to help give you the peaceful sleep you need. Sleep Soundly(TM) is your natural alternative to help quiet the body as well as the mind.

Sleep Soundly(TM) also contains a patented timed-release system that gently disperses the formula into your system for up to eight hours.

Storage

- Protect from heat, light and moisture. - Store at 15-30(0)C (59-86(0)F).

General

N6139 97920A12

Suggested/Recommended/Usage/Directions

DIRECTIONS: Take one caplet shortly before bedtime as a dietary supplement. An additional caplet may be taken if desired.

Precautions

- Keep out of reach of children.

- Do not use if inner seal is broken.

FDA Disclaimer Statement

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Formula

Sleep Soundly(TM) is made up of Valerian Root, Wild Jujube Seeds and Magnesium.

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Sleep Soundly by NutritionWorks label

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

Sleep Soundly label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Sleep Soundly by NutritionWorks

These are the 3 active ingredients this product is made of. Select any to open its full monograph.

Serving size1 Caplet(s) Dosage formOther (e.g. Tea Bag) 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.

Magnesium

Interacts with
295 drugs
50 mg per serving Form: Magnesium Oxide

Magnesium is an essential mineral your body needs for muscles, nerves, blood pressure, and many other functions, and supplements are useful for preven...

Magnesium monograph & interactions

Valerian extract

Interacts with
902 drugs
200 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 extract monograph & interactions

Wild jujube extract

75 mg per serving

Other (inactive) ingredients: Dicalcium Phosphate, Guar Gum, Stearic Acid, Calcium Carbonate, Microcrystalline Cellulose, Anise oil, Citrus pectin, Magnesium Stearate, Silica, Film coat ingredients. These complete the product’s ingredient list but are not active constituents.

Interaction report

Sleep Soundly by NutritionWorks Drug Interactions

Want to check YOUR meds against Sleep Soundly?

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
1,100Drugs
6 Major 502 Moderate 592 Minor

Ingredients driving the most interactions

Valerian extract 902
Magnesium 295

Individual Drug Interactions

The ingredients in Sleep Soundly interact with 1,100 drugs. Click any drug to see the details.

2 of the 3 ingredients in Sleep Soundly interact with drugs. Each result below shows which ingredient is responsible. Valerian extract Magnesium

Each ingredient & the kinds of drugs it affects

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

Valerian 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
Valerian extract full monograph & interactions

Magnesium15 drug types · 295 drugs

Levodopa/Carbidopa (Sinemet)

Magnesium can reduce the bioavailability of levodopa/carbidopa.
Clinical research in healthy volunteers shows that taking magnesium oxide 1000 mg with levodopa 100 mg/carbidopa 10 mg reduces the area under the curve (AUC) of levodopa by 35% and of carbidopa by 81%. In vitro and animal research shows that magnesium produces an alkaline environment in the digestive tract, which might lead to degradation and reduced bioavailability of levodopa/carbidopa.

Likelihood Probable Evidence B
Aminoglycoside Antibiotics

Concomitant use of aminoglycoside antibiotics and magnesium can increase the risk for neuromuscular weakness.
Both aminoglycosides and magnesium reduce presynaptic acetylcholine release, which can lead to neuromuscular blockade and possible paralysis. This is most likely to occur with high doses of magnesium given intravenously.

Likelihood Possible Evidence D
Antacids

Use of acid reducers may reduce the laxative effect of magnesium oxide.
A retrospective analysis shows that, in the presence of H2 receptor antagonists (H2RAs) or proton pump inhibitors (PPIs), a higher dose of magnesium oxide is needed for a laxative effect. This may also occur with antacids. Under acidic conditions, magnesium oxide is converted to magnesium chloride and then to magnesium bicarbonate, which has an osmotic laxative effect. By reducing acidity, antacids may reduce the conversion of magnesium oxide to the active bicarbonate salt.

Likelihood Possible Evidence D
Bictegravir/Emtricitabine/Tenofovir Alafenamide (Biktarvy)

Magnesium might decrease levels of bictegravir/emtricitabine/tenofovir alafenamide by reducing its absorption.
Advise patients that bictegravir/emtricitabine/tenofovir alafenamide should be taken at least 2 hours before or 6 hours after magnesium containing products.

Likelihood Probable Evidence D
Bisphosphonates

Magnesium can decrease absorption of bisphosphonates.
Cations, including magnesium, can decrease bisphosphonate absorption. Advise patients to separate doses of magnesium and these drugs by at least 2 hours.

Likelihood Probable Evidence B
Calcium Channel Blockers

Magnesium can have additive effects with calcium channel blockers, although evidence is conflicting.
Magnesium inhibits calcium entry into smooth muscle cells and may therefore have additive effects with calcium channel blockers. Severe hypotension and neuromuscular blockades may occur when nifedipine is used with intravenous magnesium, although some contradictory evidence suggests that concurrent use of magnesium with nifedipine does not increase the risk of neuromuscular weakness. High doses of magnesium could theoretically have additive effects with other calcium channel blockers.

Likelihood Possible Evidence D
Digoxin

Magnesium salts may reduce absorption of digoxin.
Clinical evidence suggests that treatment with oral magnesium hydroxide or magnesium trisilicate reduces absorption of digoxin from the intestines. This may reduce the blood levels of digoxin and decrease its therapeutic effects.

Likelihood Possible Evidence B
Potassium-Sparing Diuretics

Potassium-sparing diuretics decrease excretion of magnesium, possibly increasing magnesium levels.
Potassium-sparing diuretics also have magnesium-sparing properties, which can counteract the magnesium losses associated with loop and thiazide diuretics. Theoretically, increased magnesium levels could result from concomitant use of potassium-sparing diuretics and magnesium supplements.

Likelihood Probable Evidence D
Quinolone Antibiotics

Magnesium decreases absorption of quinolones.
Magnesium can form insoluble complexes with quinolones and decrease their absorption. Advise patients to take these drugs at least 2 hours before, or 4 to 6 hours after, magnesium supplements.

Likelihood Probable Evidence D
Skeletal Muscle Relaxants

Parenteral magnesium alters the pharmacokinetics of skeletal muscle relaxants, increasing their effects and accelerating the onset of effect.
Parenteral magnesium shortens the time to onset of skeletal muscle relaxants by about 1 minute and prolongs the duration of action by about 2 minutes. Magnesium potentiates the effects of skeletal muscle relaxants by decreasing calcium-mediated release of acetylcholine from presynaptic nerve terminals, reducing postsynaptic sensitivity to acetylcholine, and having a direct effect on the membrane potential of myocytes. Magnesium also has vasodilatory actions and increases cardiac output, allowing a greater amount of muscle relaxant to reach the motor end plate. A clinical study found that low-dose rocuronium (0.45 mg/kg), when given after administration of magnesium 30 mg/kg over 10 minutes, has an accelerated onset of effect, which matches the onset of effect seen with a full-dose rocuronium regimen (0.6 mg/kg). In another clinical study, onset times for rocuronium doses of 0.3, 0.6, and 1.2 mg/kg were 86, 76, and 50 seconds, respectively, when given alone, but were reduced to 66, 44, and 38 seconds, respectively, when the doses were given after a 15-minute infusion of magnesium sulfate 60 mg/kg. Giving intraoperative intravenous magnesium sulfate, 50 mg/kg loading dose followed by 15 mg/kg/hour, reduces the onset time of rocuronium, enhances its clinical effects, reduces the dose of intraoperative opiates, and prolongs the spontaneous recovery time. It does not affect the activity of subsequently administered neostigmine.

Likelihood Probable Evidence A
Sulfonylureas

Magnesium increases the systemic absorption of sulfonylureas, increasing their effects and side effects.
Clinical research shows that administration of magnesium hydroxide with glyburide increases glyburide absorption, increases maximal insulin response by 35-fold, and increases the risk of hypoglycemia, when compared with glyburide alone. A similar interaction occurs between magnesium hydroxide and glipizide. The mechanism of this effect appears to be related to the elevation of gastrointestinal pH by magnesium-based antacids, increasing solubility and enhancing absorption of sulfonylureas.

Likelihood Probable Evidence B
Tetracycline Antibiotics

Magnesium decreases absorption of tetracyclines.
Magnesium can form insoluble complexes with tetracyclines in the gut and decrease their absorption and antibacterial activity. Advise patients to take these drugs 1 hour before or 2 hours after magnesium supplements.

Likelihood Probable Evidence D
Anticoagulant/Antiplatelet Drugs

Theoretically, magnesium may have antiplatelet effects, but the evidence is conflicting.
In vitro evidence shows that magnesium sulfate inhibits platelet aggregation, even at low concentrations. Some preliminary clinical evidence shows that infusion of magnesium sulfate increases bleeding time by 48% and reduces platelet activity. However, other clinical research shows that magnesium does not affect platelet aggregation, although inhibition of platelet-dependent thrombosis can occur.

Likelihood Unlikely Evidence B
Gabapentin (Neurontin)

Gabapentin absorption can be decreased by magnesium.
Clinical research shows that giving magnesium oxide orally along with gabapentin decreases the maximum plasma concentration of gabapentin by 33%, time to maximum concentration by 36%, and area under the curve by 43%. Advise patients to take gabapentin at least 2 hours before, or 4 to 6 hours after, magnesium supplements.

Likelihood Unlikely Evidence B
Sevelamer (Renagel, Renvela)

Sevelamer may increase serum magnesium levels.
In patients on hemodialysis, sevelamer use was associated with a 0.28 mg/dL increase in serum magnesium. The mechanism of this interaction remains unclear.

Likelihood Possible Evidence B
Magnesium full monograph & interactions
The maker

Brand information

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

NutritionWorks

See all NutritionWorks products
Name
Windmill Health Products
City
W. Caldwell
State
NJ
ZipCode
07006
Pharmacist Counseling Corner

Sleep Soundly by NutritionWorks: Common Questions

Does Sleep Soundly by NutritionWorks interact with any medications?
Yes. Based on its ingredients, Sleep Soundly has a known interaction with 1,100 medications, including 6 rated major. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Sleep Soundly contains 3 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.
Is magnesium safe to take while breastfeeding?
Normal dietary amounts of magnesium are fine. If you want to use a supplement while breastfeeding, check with your doctor first — we'd recommend confirming what dose is right for you and your baby.
Can I take this if I'm pregnant?
Magnesium is needed in pregnancy, but use supplements only under your doctor's guidance. Valerian is best avoided during pregnancy — safety data advises against it. Talk with your doctor or pharmacist before taking this product while pregnant.
What are the most common side effects of valerian?
Dizziness, drowsiness, and mental slowness are the most common. Some people also report headache, stomach upset, and vivid dreams. If you take it for a long time and then stop suddenly, you might have withdrawal symptoms like anxiety and trouble sleeping — so taper slowly.
Does magnesium cause diarrhea?
Yes, diarrhea is one of the most common side effects of oral magnesium, along with nausea and stomach upset. If this happens, your doctor or pharmacist may adjust your dose or recommend a different form.
Can I drink alcohol while taking this product?
Valerian can have additive sedative effects when combined with alcohol, so excessive drowsiness is a real risk. It's best to avoid alcohol while taking this product, or at least talk it over with your doctor or pharmacist first.
Is there good evidence that valerian helps sleep?
Valerian is rated as possibly effective for insomnia — meaning some evidence supports its use, but the data is not conclusive. It may help some people, but it's not guaranteed to work for everyone.

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

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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.

Sleep Soundly label
Go deeper

The Full Monographs Behind Sleep Soundly’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Magnesium

Interacts with 295 drugs

Magnesium is an essential mineral your body needs for muscles, nerves, blood pressure, and many other functions, and supplements are useful for preventing or correcting deficiency. Some othe...

Read the full Magnesium monograph → Herb & supplement monograph

Valerian

Interacts with 902 drugs

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 people sleep but does not work reliably...

Read the full Valerian monograph →
Sources

Sources & How We Checked

Sleep Soundly'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 119 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.

Magnesium 82 references
  1. Rodin SM, Johnson BF. Pharmacokinetic interactions with digoxin. Clin Pharmacokinet 1988;15:227-44.
  2. Covington TR, et al. Handbook of Nonprescription Drugs. 11th ed. Washington, DC: American Pharmaceutical Association, 1996.
  3. Dahle LO, Berg G, Hammar M, et al. The effect of oral magnesium substitution on pregnancy-induced leg cramps. Am J Obstet Gynecol 1995;173:175-80. PubMed
  4. Hansten PD, Horn JR. Drug Interactions Analysis and Management. Vancouver, WA: Applied Therapeutics Inc., 1997 and updates.
  5. Peikert A, Wilimzig C, Kohne-Volland R. Prophylaxis of migraine with oral magnesium: results from a prospective, multi-center, placebo-controlled and double-blind randomized study. Cephalalgia 1996;16:257-63. PubMed
  6. Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Calcium, Phosphorus, Magnesium, Vitamin D, and Fluoride. Washington, DC: National Academy Press, 1999. Available at: http://books.nap.edu/books/0309063507/html/index.html.
  7. Birrer RB, Shallash AJ, Totten V. Hypermagnesemia-induced fatality following epsom salt gargles. J Emerg Med 2002;22:185-8. PubMed
  8. Ryan MP. Diuretics and potassium/magnesium depletion. Directions for treatment. Am J Med 1987;82:38-47.. PubMed
  9. Hollifield JW. Magnesium depletion, diuretics, and arrhythmias. Am J Med 1987;82:30-7.. PubMed
  10. Heidenreich O. Mode of action of conventional and potassium-sparing diuretics--aspects with relevance to Mg-sparing effects. Magnesium 1984;3:248-56..
  11. Pfaffenrath V, Wessely P, Meyer C, et al. Magnesium in the prophylaxis of migraine--a double-blind placebo-controlled study. Cephalalgia 1996;16:436-40.. PubMed
  12. Wang F, Van Den Eeden SK, Ackerson LM, et al. Oral magnesium oxide prophylaxis of frequent migrainous headache in children: a randomized, double-blind, placebo-controlled trial. Headache 2003;43:601-10.. PubMed
  13. Sompolinsky D, Samra Z. Influence of magnesium and manganese on some biological and physical properties of tetracycline. J Bacteriol 1972;110:468-76.. PubMed
  14. Jeyabalan A, Caritis SN. Pharmacologic inhibition of preterm labor. Clin Obstet Gynecol 2002;45:99-113. PubMed
  15. Mittendorf R, Dambrosia J, Pryde PG, et al. Association between the use of antenatal magnesium sulfate in preterm labor and adverse health outcomes in infants. Am J Obstet Gynecol 2002;186:1111-8.. PubMed
  16. Witlin AG, Sibai BM. Magnesium sulfate therapy in preeclampsia and eclampsia. Obstet Gynecol 1998;92:883-9.. DOI
  17. Crowther CA, Hiller JE, Doyle LW. Magnesium sulphate for preventing preterm birth in threatened preterm labour. Cochrane Database Syst Rev 2002;4:CD001060. . PubMed
  18. Davey MJ, Teubner D. A randomized controlled trial of magnesium sulfate, in addition to usual care, for rate control in atrial fibrillation. Ann Emerg Med 2005;45:347-53.. PubMed
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