Interactions on record — worth a quick check against your medications. Check your meds →
Dietary supplement

Melatonin 3 mg Ingredients & Drug Interactions

by Pure Encapsulations

Melatonin 3 mg label
See full label image
Capsule Category: Non-nutrient/non-botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Melatonin 3 mg 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: Moderate

Melatonin 3 mg is a dietary supplement by Pure Encapsulations with 1 active ingredient. Its ingredients are commonly taken for trouble falling asleep (insomnia), jet lag, delayed sleep phase syndrome.Based on those ingredients, 1,461 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Melatonin. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Melatonin 3 mg by Pure Encapsulations

Ask about any prescription or over-the-counter medication and we check it for interactions with Melatonin 3 mg by Pure Encapsulations — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Melatonin 3 mg by Pure Encapsulations

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 Aug 20, 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 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

This supplement contains one active ingredient: melatonin 3 mg per capsule. Melatonin is a hormone naturally produced by your brain to help regulate sleep-wake cycles.

The capsule itself is made from vegetarian cellulose, and the product includes hypoallergenic plant fiber as an inactive ingredient.

Does it work?

Strong 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
Strong

Clinical evidence supports at least one of this product's ingredients for its stated purpose.

Why this rating?
  • The label markets this product for: support healthy sleep and sleep onset.
  • We looked for evidence on: Delayed sleep phase syndrome (DSPS), Jet lag, Non-24-hour sleep wake disorder, Shift work disorder, Beta blocker-induced insomnia, Postoperative sleep disturbance — and 3 related terms.
  • The strongest evidence on file: Melatonin is rated "Likely Effective" for Delayed sleep phase syndrome (DSPS) (Natural Medicines).
  • Also on file: Melatonin is rated "Likely Effective" for Non-24-hour sleep wake disorder.
  • Also on file: Melatonin is rated "Possibly Effective" for Jet lag, Beta blocker-induced insomnia.

Melatonin is likely effective for non-24-hour sleep-wake disorder and delayed sleep phase syndrome (DSPS) — conditions where your natural sleep timing is shifted or out of sync. It's possibly effective for pre-procedural anxiety (the worry before medical or dental procedures), sunburn, and high blood pressure.

The evidence we hold doesn't establish effectiveness for other common uses people ask about, so if you're considering it for a different reason, that's worth discussing with your doctor or pharmacist.

The evidence, ingredient by ingredient Melatonin

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.

Orally, melatonin is generally well tolerated for short-term use, though long-term safety is less certain and product quality varies between brands. The most common side effects are dizziness, drowsiness, headache, and nausea.

Rare serious concerns include a possible increased risk of seizure. There are also isolated reports of mood changes (including depression, nervousness, or hallucinations), reduced sperm quality in men, and hormonal shifts with long-term use.

During pregnancy, melatonin is rated possibly unsafe — the safety data advises caution, so talk with your doctor before use if you're pregnant or planning to become pregnant. Safety while breastfeeding hasn't been established, so avoid it unless your doctor advises otherwise.

Side effects, ingredient by ingredient Melatonin

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 — Melatonin.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; seizure medications; immunosuppressants / transplant drugs; diabetes medications.
  • For scale: 1,462 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 melatonin, double-check with your doctor or pharmacist if you take any blood pressure medications (especially extended-release nifedipine), blood thinners or antiplatelet drugs like warfarin, immunosuppressants, diabetes medications, seizure medications, or any other regular prescriptions. Melatonin's interactions with these drug types span Moderate severity and can reduce drug effectiveness or raise bleeding risk.

Check your own medication Run your meds through the checker above

The bottom line

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

Melatonin 3 mg is likely effective for specific sleep disorders (non-24-hour sleep-wake disorder and delayed sleep phase syndrome) and possibly helpful for anxiety before procedures. But because it interacts with a very large number of medications — from blood pressure drugs to blood thinners to diabetes medicines — you absolutely need to run your exact medications through the checker on this page or talk with your doctor or pharmacist before starting.

If you're pregnant or breastfeeding, check with your doctor first.

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

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Jan 7, 2019.

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 Melatonin 3 mg, straight from the product label.

Brand Pure Encapsulations
Barcode (UPC) 766298001807
Net contents 60 Capsule(s)
Market status On market
Date entered into DSLD Jan 7, 2019
DSLD ID 185032
Product type Non-nutrient/non-botanical
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Gluten 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 Melatonin 3 mg by Pure Encapsulations, 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)
Servings per container
60
UPC/BARCODE
766298001807
IngredientAmount% DV
Melatonin3 mg--

Other ingredients: hypoallergenic Plant Fiber, Vegetarian Capsule

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.
Storage

Store in a cool, dry place.

Suggested/Recommended/Usage/Directions

Recommendations: As a dietary supplement, take 1 capsule daily, 1/2 to 1 hour before bedtime.

Precautions

Warning: See side panel.

Keep out of the reach of children.

Use only if safety seal is intact.

Warning: Consult a healthcare professional if you are experiencing long-term sleep difficulties, before use in children, before use in pregnant or lactating women, those with a medical condition, and those taking medication. Do not drive or operate machinery when taking melatonin. This product may be contraindicated for individuals taking corticosteroids.

Warning: Consult a healthcare professional if you are experiencing long-term sleep difficulties, before use in children, before use in pregnant or lactating women, those with a medical condition, and those taking medication.

Warning: Consult a healthcare professional if you are experiencing long-term sleep difficulties, before use in children, before use in pregnant or lactating women, those with a medical condition, and those taking medication.

General Statements

Scan to learn about our hypoallergenic supplements

Contents may not fill package in order to accommodate required labeling. Please rely on stated quantity.

Formulation

Certified Gluten-Free by the Gluten-Free Certification Organization, www.gluten.org

Gluten-free, Non-GMO & Hypoallergenic

Gluten-free, Non-GMO & Hypoallergenic

FDA Statement of Identity

Dietary Supplement

Seals/Symbols

GF

FDA Disclaimer Statement

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

General

v5 code: ME36

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

See for yourself

Melatonin 3 mg by Pure Encapsulations label

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

Melatonin 3 mg 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 Melatonin 3 mg by Pure Encapsulations

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size1 Capsule(s) Dosage formCapsule Servings per container60 Amounts shown are per serving.

Melatonin

Interacts with
1,461 drugs
3 mg per serving

Melatonin is a hormone your body makes naturally to help control your sleep-wake cycle, and the supplement form is widely used to help with sleep timi...

Melatonin monograph & interactions

Other (inactive) ingredients: Hypoallergenic Plant Fiber, Vegetarian Capsule. These complete the product’s ingredient list but are not active constituents.

Interaction report

Melatonin 3 mg by Pure Encapsulations Drug Interactions

Want to check YOUR meds against Melatonin 3 mg?

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
1,461Drugs
1,116 Moderate 345 Minor

Ingredients driving the most interactions

Melatonin 1,461

Individual Drug Interactions

The ingredients in Melatonin 3 mg interact with 1,461 drugs. Click any drug to see the details.

1 of the 1 ingredient in Melatonin 3 mg interact with drugs. Each result below shows which ingredient is responsible. Melatonin

Each ingredient & the kinds of drugs it affects

For each ingredient in Melatonin 3 mg 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.

Melatonin18 drug types · 1,461 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, melatonin may have anticoagulant effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
There are isolated case reports of minor bleeding and decreased prothrombin activity in people taking melatonin with warfarin (Coumadin). The mechanism, if any, of this interaction is unknown. Taking melatonin orally seems to decrease coagulation activity within one hour of dosing in healthy men.

Likelihood Possible Evidence B
Anticonvulsants

Theoretically, melatonin may reduce the effects of anticonvulsants. Some clinical research suggests that melatonin may increase the frequency of seizures in certain patients, particularly children with neurological impairment.

Likelihood Possible Evidence B
Antidiabetes Drugs

Theoretically, taking melatonin with antidiabetes drugs might increase the risk of hypoglycemia.
Some clinical research shows that melatonin reduces levels of fasting blood glucose and improves glycemic control. However, other research suggests that melatonin might impair glucose utilization and increase insulin resistance, while other research has found no effect on glucose levels. Until more is known, use melatonin cautiously in combination with antidiabetes drugs.

Likelihood Possible Evidence B
Antihypertensive Drugs

Theoretically, taking melatonin with antihypertensive drugs might increase the risk of hypotension or hypertension.
Some clinical research suggests that taking melatonin decreases blood pressure in healthy adults. Also, melatonin seems to lower systolic and diastolic blood pressure in individuals with high blood pressure at nighttime or untreated essential hypertension. However, melatonin seems to worsen blood pressure in patients who are taking antihypertensive medications. Immediate-release melatonin 5 mg at night in combination with nifedipine GITS (Procardia XL) increases systolic blood pressure an average of 6.5 mmHg, diastolic blood pressure by an average of 4.9 mmHg, and heart rate by 3.9 bpm. Also, results from animal research suggest that melatonin reduces the effectiveness of certain antihypertensive drugs, including methoxamine and clonidine.

Likelihood Possible Evidence A
Caffeine

Theoretically, taking caffeine with melatonin might increase levels of melatonin.
Some evidence suggests that caffeine consumption can decrease endogenous melatonin levels, while other evidence suggests that caffeine increases endogenous melatonin levels. When administered in combination with melatonin supplements, caffeine seems to increase melatonin effects and levels. The reason for this discrepancy is not completely clear. Part of the discrepancy may result from the fact that caffeine can inhibit melatonin synthesis as well as inhibit melatonin metabolism. By functioning as an adenosine receptor antagonist, caffeine may indirectly inhibit the synthesis of melatonin. Conversely, because melatonin and caffeine are both metabolized by cytochrome P450 1A2 (CYP1A2) enzyme, concomitant use of melatonin and caffeine may reduce the metabolism of melatonin, resulting in higher serum levels.

Likelihood Probable Evidence B
Cns Depressants

Theoretically, taking melatonin might increase the sedative effects of CNS depressants.
Melatonin has sedative effects. Theoretically, concomitant use of melatonin with alcohol, benzodiazepines, or other sedative drugs might cause additive sedation.

Likelihood Possible Evidence D
Contraceptive Drugs

Theoretically, taking contraceptive drugs with melatonin might increase the effects and adverse effects of melatonin.
Contraceptive drugs can increase the levels of endogenous melatonin. Theoretically, these drugs may increase the effects and adverse effects of oral melatonin.

Likelihood Probable Evidence B
Cytochrome P450 1A2 (Cyp1A2) Substrates

Theoretically, melatonin might increase levels of drugs metabolized by CYP1A2. Also, other CYP1A2 substrates might decrease the metabolism of melatonin, increasing melatonin levels.
Melatonin is metabolized in the liver primarily by the CYP2C19 and CYP1A2 enzymes. Theoretically, combined administration of melatonin with drugs metabolized by the CYP1A2 enzyme might reduce the metabolism of these drugs, resulting in increased serum levels. Conversely, some drugs metabolized by CYP1A2 may inhibit the metabolism of melatonin, resulting in increased serum levels of melatonin. Until more is known, use melatonin cautiously in patients taking drugs metabolized by these enzymes.

Likelihood Probable Evidence D
Cytochrome P450 2C19 (Cyp2C19) Substrates

Theoretically, melatonin might increase levels of drugs metabolized by CYP2C19. Also, other CYP2C19 substrates might decrease the metabolism of melatonin, increasing melatonin levels.
Melatonin is metabolized in the liver primarily by the CYP2C19 and CYP1A2 enzymes. Theoretically, combined administration of melatonin with certain drugs metabolized by the CYP2C19 enzyme may reduce the metabolism of these drugs, resulting in increased serum levels. Conversely, some drugs metabolized by CYP2C19 may inhibit the metabolism of melatonin, resulting in increased serum levels of melatonin. Until more is known, use melatonin cautiously in patients taking drugs metabolized by these enzymes.

Likelihood Probable Evidence D
Fluvoxamine (Luvox)

Theoretically, taking fluvoxamine with melatonin might increase levels of melatonin.
Fluvoxamine can significantly increase melatonin levels. In some cases, fluvoxamine might increase bioavailability of exogenously administered melatonin by up to 20 times. Some researchers think this might be a beneficial interaction and be potentially useful for cases of refractory insomnia. However, this interaction might also cause unwanted excessive drowsiness and possibly other adverse effects. Fluvoxamine is known to increase endogenous melatonin secretion. It seems to increase serum levels of exogenously administered melatonin possibly by decreasing melatonin metabolism by inhibiting cytochrome P450 (CYP450) 1A2 and 2C19 or by inhibiting melatonin elimination. This effect has been found in healthy people taking fluvoxamine 50-75 mg and melatonin 5 mg.

Likelihood Probable Evidence B
Immunosuppressants

Theoretically, melatonin might interfere with immunosuppressive therapy.
Melatonin can stimulate immune function. Theoretically, melatonin might interfere with immunosuppressive therapy.

Likelihood Possible Evidence B
Methamphetamine (Desoxyn)

Theoretically, taking melatonin with methamphetamine may increase the adverse effects of methamphetamine.
Animal research suggests that melatonin exacerbates the adverse effects of methamphetamine, resulting in greater depression of tryptophan hydroxylase (TPH) and tyrosine hydroxylase (TH) activity, as well as a significant reduction in dopamine levels. This has not been shown in humans.

Likelihood Possible Evidence D
Nifedipine Gits (Procardia Xl)

Theoretically, taking melatonin with extended release nifedipine reduces the effects of nifedipine.
Melatonin can decrease the effectiveness of extended release nifedipine (GITS). Immediate-release melatonin 5 mg at night in combination with nifedipine GITS 30-60 mg daily increases systolic and blood pressure by an average of 6.5 mmHg and 4.9 mmHg, respectively. Concomitant use with melatonin also increases heart rate by 3.9 bpm. The mechanism of this interaction is not known.

Likelihood Probable Evidence B
Seizure Threshold Lowering Drugs

Theoretically, taking melatonin with drugs that lower the seizure threshold might increase the risk of seizure activity.
Some clinical evidence suggests that melatonin may increase the frequency of seizures in certain patients, particularly children with neurological disabilities.

Likelihood Possible Evidence D
Warfarin (Coumadin)

Theoretically, melatonin may have antiplatelet effects and may increase the risk of bleeding with warfarin.
Three cases of increased prothrombin time have been reported for patients aged 48-72 years who took melatonin orally in combination with warfarin. However, three cases of decreased prothrombin time have also been reported for patients aged 51-84 years who took melatonin orally in combination with warfarin. Until more is known, use melatonin cautiously in patients taking warfarin.

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

Theoretically, melatonin might increase levels of drugs metabolized by CYP2D6.
Laboratory research suggests that certain lots of melatonin inhibit CYP2D6. Theoretically, combined administration of melatonin with certain drugs metabolized by the CYP2D6 enzyme may reduce the metabolism of these drugs, resulting in increased serum levels. Until more is known, use melatonin cautiously in patients taking drugs metabolized by these enzymes.

Likelihood Possible Evidence D
Cytochrome P450 3A4 (Cyp3A4) Substrates

Theoretically, melatonin might increase levels of drugs metabolized by CYP3A4.
Laboratory research shows that certain lots of melatonin inhibit CYP3A4. Theoretically, combined administration of melatonin with certain drugs metabolized by CYP3A4 may reduce the metabolism of these drugs, resulting in increased serum levels. Until more is known, use melatonin cautiously in patients taking drugs metabolized by these enzymes.

Likelihood Possible Evidence D
Flumazenil (Romazicon)

Theoretically, taking flumazenil with melatonin might reduce the effects of melatonin.
Animal research shows that flumazenil may inhibit the effect of melatonin.

Likelihood Possible Evidence D
Melatonin full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Melatonin 3 mg, from the product label.

Pure Encapsulations

See all Pure Encapsulations products
Name
Pure Encapsulations
Street Address
490 Boston Post Road
City
Sudbury
State
MA
Phone Number
1-800-753-2277
Web Address
www.PureEncapsulations.com
Pharmacist Counseling Corner

Melatonin 3 mg by Pure Encapsulations: Common Questions

Does Melatonin 3 mg by Pure Encapsulations interact with any medications?
Yes. Based on its ingredients, Melatonin 3 mg has a known interaction with 1,461 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Melatonin 3 mg contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism 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.
What does melatonin actually do in the body?
Melatonin is a hormone your brain naturally makes to regulate your sleep-wake cycle. This supplement provides a 3 mg dose to help your body's timing when that cycle is disrupted or shifted out of sync.
Is melatonin safe for long-term use?
Melatonin is generally well tolerated for short-term use, but long-term safety is less certain. Also, product quality varies between brands, so it's worth discussing the duration and timing of use with your doctor.
Can I take this if I'm pregnant?
Melatonin is rated possibly unsafe in pregnancy. The safety data advises caution, so talk with your doctor before use if you're pregnant or planning to become pregnant — they can weigh the pros and cons for your situation.
What are the most common side effects?
The most common side effects are dizziness, drowsiness, headache, and nausea. Rare serious concerns include a possible increased risk of seizure and mood changes such as depression or hallucinations.
Will melatonin help with any sleep problem, or just certain ones?
Melatonin is likely effective for non-24-hour sleep-wake disorder and delayed sleep phase syndrome — conditions where your sleep timing is shifted. It's possibly effective for pre-procedural anxiety. For other sleep or health concerns, the evidence we hold doesn't establish how well it works, so ask your doctor or pharmacist.
Why do I need to check my medications before taking this?
Melatonin interacts with a very large number of medications — including blood pressure drugs, blood thinners, diabetes medicines, and seizure medications — and can reduce how well they work or raise the risk of side effects. That's why checking your exact prescriptions is essential.

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.

Melatonin 3 mg label
Go deeper

The Full Monographs Behind Melatonin 3 mg’s Ingredients

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

Herb & supplement monograph

Melatonin

Interacts with 1,461 drugs

Melatonin is a hormone your body makes naturally to help control your sleep-wake cycle, and the supplement form is widely used to help with sleep timing problems and jet lag. The evidence is...

Read the full Melatonin monograph →
Sources

Sources & How We Checked

Melatonin 3 mg'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 118 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.

Melatonin 118 references
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  2. Ellis CM, Lemmens G, Parkes JD. Melatonin and insomnia. J Sleep Res 1996;5:61-5. PubMed
  3. Petrie K, Dawson AG, Thompson L, Brook R. A double-blind trial of melatonin as a treatment for jet lag in international cabin crew. Biol Psychiatr 1993;33:526-30. PubMed
  4. Claustrat B, Brun J, David M, et al. Melatonin and jet lag: confirmatory result using a simplified protocol. Biol Psychiatr 1992;32:705-11.
  5. Fauteck J, Schmidt H, Lerchl A, et al. Melatonin in epilepsy: first results of replacement therapy and first clinical results. Biol Signals Recept 1999;8:105-10. PubMed
  6. Arangino S, Cagnacci A, Angiolucci M, et al. Effects of melatonin on vascular reactivity, catecholamine levels, and blood pressure in healthy men. Am J Cardiol 1999;83:1417-9. PubMed
  7. Pierce A. The American Pharmaceutical Association Practical Guide to Natural Medicines. New York: The Stonesong Press, 1999:19.
  8. Lancioni GE, O'Reilly MF, Basili G. Review of strategies for treating sleep problems in persons with severe or profound mental retardation or multiple handicaps. Am J Ment Retard 1999;104:170-86. PubMed
  9. Carman JS, Post RM, Buswell R, et al. Negative effects of melatonin on depression. Am J Psychiatry 1976;133:1181-1186. PubMed
  10. Hartter S, Grozinger M, Weigmann H, et al. Increased bioavailability of oral melatonin after fluvoxamine coadministration. Clin Pharmacol Ther 2000;67:1-6.
  11. Fetrow CW, Avila JR. Professional's Handbook of Complementary & Alternative Medicines. 1st ed. Springhouse, PA: Springhouse Corp., 1999.
  12. Lusardi P, et al. Cardiovascular effects of melatonin in hypertensive patients well controlled by nifedipine: a 24-hour study. Br J Clin Pharmacol 2000;49:423-7. PubMed
  13. von Bahr C, Ursing C, Yasui N, et al. Fluvoxamine but not citalopram increases serum melatonin in healthy subjects – an indication that cytochrome P450 CYP1A2 and CYP2C19 hydroxylate melatonin. Eur J Clin Pharmacol 2000;56:123-7.
  14. Grozinger M, Hartter S, Wang X, et al. Fluvoxamine strongly inhibits melatonin metabolism in a patient with low-amplitude melatonin profile. Arch Gen Psychiatry 2000 Aug;57:812-3. PubMed
  15. Lissoni P, Barni S, Mandala M, et al. Decreased toxicity and increased efficacy of cancer chemotherapy using the pineal hormone melatonin in metastatic solic tumor patients with poor clinical status. Eur J Cancer 1999;35:1688-92.
  16. Sheldon SH. Pro-convulsant effects of oral melatonin in neurologically disabled children. Lancet 1998;351:1254. PubMed
  17. Hartter S, Grozinger M, Weigmann H, et al. Increased bioavailability of oral melatonin after fluvoxamine coadministration. Clin Pharmacol Ther 2000;67:1-6.
  18. Wright KP Jr, Myers BL, Plenzler SC, et al. Acute effects of bright light and caffeine on nighttime melatonin and temperature levels in women taking and not taking oral contraceptives. Brain Res 2000;873:310-7.
  19. Herxheimer A, Petrie KJ. Melatonin for preventing and treating jet lag. Cochrane Database Syst Rev 2001;(1):CD001520.
  20. Briggs, Freeman, Yafee. Update Drugs in Pregnancy and Lactation. Lippincott Williams & Wilkins, 2001.
  21. Suhner A, Schlagenhauf P, Johnson R, et al. Comparative study to determine the optimal melatonin dosage form for the alleviation of jet lag. Chronobiol Int 1998;15:655-66. PubMed
  22. Herxheimer A, Petrie KJ. Melatonin for the prevention and treatment of jet lag. Cochrane Database Syst Rev 2002;2:CD001520. PubMed
  23. Munoz-Hoyos A, Sanchez-Forte M, Molina-Carballo A, et al. Melatonin's role as an anticonvulsant and neuronal protector: experimental and clinical evidence. J Child Neurol 1998;13:501-9.. PubMed
  24. Sandyk R, Tsagas N, Anninos PA. Melatonin as a proconvulsive hormone in humans. Int J Neurosci 1992;63:125-35.. PubMed
  25. Golombek DA, Escolar E, Burin LJ, et al. Chronopharmacology of melatonin: inhibition by benzodiazepine antagonism. Chronobiol Int 1992;9:124-31.. PubMed
  26. Smits MG, Nagtegaal EE, van der Heijden J, et al. Melatonin for chronic sleep onset insomnia in children: a randomized placebo-controlled trial. J Child Neurol 2001;16:86-92.. PubMed
  27. Cagnacci A, Arangino S, Renzi A, et al. Influence of melatonin administration on glucose tolerance and insulin sensitivity of postmenopausal women. Clin Endocrinol (Oxf) 2001;54:339-46.. PubMed
  28. Williamson BL, Tomlinson AJ, Naylor S, Gleich GJ. Contaminants in commercial preparations of melatonin. Mayo Clin Proc 1997;72:1094-5. PubMed
  29. Williamson BL, Tomlinson AJ, Mishra PK, et al. Structural characterization of contaminants found in commercial preparations of melatonin: similarities to case-related compounds from L-tryptophan associated with eosinophilia-myalgia syndrome. Chem Res To
  30. Stewart LS. Endogenous melatonin and epileptogenesis: facts and hypothesis. Int J Neurosci 2001;107:77-85.. PubMed
  31. Molina-Carballo A, Munoz-Hoyos A, Reiter RJ, et al. Utility of high doses of melatonin as adjunctive anticonvulsant therapy in a child with severe myoclonic epilepsy: two years' experience. J Pineal Res 1997;23:97-105.. PubMed
  32. Tjon Pian Gi CV, Broeren JP, Starreveld JS, A Versteegh FG. Melatonin for treatment of sleeping disorders in children with attention deficit/hyperactivity disorder: a preliminary open label study. Eur J Pediatr 2003;162:554-5. PubMed
  33. Secreto G, Chiechi LM, Amadori A, et al. Soy isoflavones and melatonin for the relief of climacteric symptoms: a multicenter, double-blind, randomized study. Maturitas 2004;47:11-20. PubMed
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