Melatonin-3 3 mg Ingredients & Drug Interactions
What is this page for?
First and foremost: checking Melatonin-3 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
Melatonin-3 3 mg is a dietary supplement by DaVinci Laboratories 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.
Check Your Meds Against Melatonin-3 3 mg by DaVinci Laboratories
Ask about any prescription or over-the-counter medication and we check it for interactions with Melatonin-3 3 mg by DaVinci Laboratories — and tell you which ingredient is responsible.
AI summaries are generated from our interaction database for education only — always confirm with your pharmacist. How we use AI
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HelloPharmacist Scorecard of Melatonin-3 3 mg by DaVinci Laboratories
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.
What’s inside
Full disclosure
This product contains one active ingredient: melatonin 3 mg per capsule. Melatonin is a hormone your body naturally produces to regulate your sleep-wake cycle.
The capsule also contains two inactive ingredients — microcrystalline cellulose and hypromellose — which are common binders and capsule materials.
Does it work?
Strong evidence
Melatonin is likely effective for non-24-hour sleep-wake disorder and delayed sleep phase syndrome (DSPS), a condition where your sleep rhythm is significantly delayed. It's possibly effective for reducing anxiety before medical procedures, for sunburn, and for lowering high blood pressure.
The evidence for other uses isn't established in the data we hold.
How safe is it?
Well-documented data
Melatonin is generally well tolerated for short-term use. The most common side effects are dizziness, drowsiness, headache, and nausea.
Rare but serious concerns include an increased risk of seizures, mood changes (including sadness and depression), and reports of delusions or hallucinations. Long-term safety is less certain, and product quality varies across brands.
The safety data advises against melatonin in pregnancy. Safety while breastfeeding has not been established — talk with your doctor or pharmacist for personalized advice before using it if you're nursing or planning to become pregnant.
Meds to double-check
Moderate interaction found
Before taking this product, check with your pharmacist or doctor if you take blood thinners (like warfarin or aspirin), blood pressure medications, diabetes drugs, anti-seizure medications, or immunosuppressants. Melatonin may increase bleeding risk, lower your blood pressure further, affect your blood sugar, reduce seizure control, or interfere with immune-suppressing drugs.
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 may help if you have a delayed sleep rhythm or non-24-hour sleep-wake disorder, or if you're managing pre-procedural anxiety. Because it interacts with blood thinners, blood pressure and diabetes medications, seizure drugs, and immunosuppressants, you should check with your doctor or pharmacist before starting it, especially if you take any prescription medications.
If you're pregnant or breastfeeding, talk with your healthcare provider 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 Mar 22, 2024.
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
General information
Key facts about Melatonin-3 3 mg, straight from the product label.
| Brand | DaVinci Laboratories |
|---|---|
| Barcode (UPC) | 0200370.1201022B |
| Net contents | 120 Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Mar 22, 2024 |
| DSLD ID | 305236 |
| Product type | Non-nutrient/non-botanical |
| Supplement form | Capsule |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Vegetarian, Adult (18 - 50 Years), Women (not pregnant or lactating), Gluten Free |
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 3 mg by DaVinci Laboratories, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Melatonin | 3 mg | -- |
Other ingredients: Microcrystalline Cellulose, Hypromellose
Tap any ingredient to jump to its full detail below.
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
Truth We pledge total truth in labeling. Our family of products contains only the purest and most potent ingredients. Guaranteed.
Formulation
Color of this product may vary due to color variations of the natural ingredients.
A Dietary Supplement to support normal sleep
Vegetarian
Gluten free
Precautions
Warning: This product should not be taken by adolescents, pregnant or lactating women, persons taking cortisone, or persons with kidney disease.
Warning: This product should not be taken by adolescents, pregnant or lactating women, persons taking cortisone, or persons with kidney disease. Consult your physician if taking medications for sleep, anxiety or if on any anti-coagulant, antidepressant, antipsychotic or anti-hypertensive drugs.
Keep out of reach of children.
To obtain product information or report a serious adverse event, call 1-800-325-1776.
Storage
Store in a cool, dry place.
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.
FDA Statement of Identity
A Dietary Supplement to Support Normal Sleep
Suggested/Recommended/Usage/Directions
Suggested Use: As a dietary supplement, take 1 capsule, one to two hours before bedtime, or as directed by your healthcare practitioner.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Melatonin-3 3 mg by DaVinci Laboratories label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
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)The Ingredients in Melatonin-3 3 mg by DaVinci Laboratories
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 container120 Amounts shown are per serving.
Melatonin
Interacts with1,461 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 timi...
Melatonin monograph & interactionsOther (inactive) ingredients: Microcrystalline Cellulose, Hypromellose. These complete the product’s ingredient list but are not active constituents.
Melatonin-3 3 mg by DaVinci Laboratories Drug Interactions
HelloPharmacist Interaction Report
Melatonin-3 by DaVinci Laboratories interacts with a number of medications through its melatonin content.
The most serious concern is with blood thinners like warfarin (Coumadin) and antiplatelet drugs — melatonin may increase bleeding risk, and case reports document changes in how quickly your blood clots when the two are combined.
Read the full breakdown — every affected drug type, severity by severity
You'll also want to check before combining this with blood pressure medications, diabetes drugs, anti-seizure medications, or immunosuppressants. Melatonin may lower your blood pressure (which could cause unwanted drops if you're already on pressure-lowering drugs), affect blood sugar control, reduce how well seizure medications work, or interfere with drugs that suppress your immune system.
Additionally, taking melatonin with the heart medication nifedipine (Procardia XL) may reduce how well that medication controls your blood pressure. Altogether, these interactions span 1,462 individual medications.
If you take any prescription medication — especially for your heart, blood pressure, blood clotting, diabetes, seizures, or immune function — run it through the checker below or talk with your pharmacist before starting this product.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Melatonin-3 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 checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in Melatonin-3 3 mg interact with 1,461 drugs. Click any drug to see the details.
1 of the 1 ingredient in Melatonin-3 3 mg interact with drugs. Each result below shows which ingredient is responsible. Melatonin
Acetaminophen, Chlorpheniramine, Phenylephrine, SalicylamideRhinogesic, Rhinogesic JR
How Acetaminophen, Chlorpheniramine, Phenylephrine, Salicylamide interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninSeizure Threshold Lowering Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates +1 Moderate
Interaction Summary
Theoretically, taking melatonin with drugs that lower the seizure threshold might increase the risk of seizure activity.
Read the full Melatonin + Acetaminophen, Chlorpheniramine, Phenylephrine, Salicylamide interactionAcetaminophen, Chlorpheniramine, PhenylpropanolamineAlumadrine, Conex, Sinadrin Max Strength, Sinulin
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninCytochrome P450 3a4 (cyp3a4) Substrates, Seizure Threshold Lowering Drugs +1 Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP3A4.
Read the full Melatonin + Acetaminophen, Chlorpheniramine, Phenylpropanolamine interactionAcetaminophen, Chlorpheniramine, Phenylpropanolamine, OpiumHista-Derfule
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninCytochrome P450 1a2 (cyp1a2) Substrates, Seizure Threshold Lowering Drugs +2 Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP1A2.
Read the full Melatonin + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interactionAcetaminophen, Chlorpheniramine, Phenylpropanolamine, PhenyltoloxamineNorel Plus
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Phenyltoloxamine interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninCytochrome P450 1a2 (cyp1a2) Substrates, Seizure Threshold Lowering Drugs +1 Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP1A2.
Read the full Melatonin + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Phenyltoloxamine interactionAcetaminophen, Chlorpheniramine, PseudoephedrineAlka-Seltzer PLUS Liquid Gels, Children's Tylenol Cold, Codimal, Comtrex, Extra Strength Tylenol Allergy Sinus, Lorsin +3 more
How Acetaminophen, Chlorpheniramine, Pseudoephedrine interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninCytochrome P450 3a4 (cyp3a4) Substrates, Seizure Threshold Lowering Drugs +1 Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP3A4.
Read the full Melatonin + Acetaminophen, Chlorpheniramine, Pseudoephedrine interactionAcetaminophen, ChlorzoxazoneAcetazone Forte, Extra Strength Tylenol Aches & Strains, Parafon Forte
How Acetaminophen, Chlorzoxazone interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninCytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP1A2.
Read the full Melatonin + Acetaminophen, Chlorzoxazone interactionAcetaminophen, Chlorzoxazone, CodeineAcetazone Forte C8, Parafon Forte C8
How Acetaminophen, Chlorzoxazone, Codeine interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninCytochrome P450 1a2 (cyp1a2) Substrates, Seizure Threshold Lowering Drugs +2 Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP1A2.
Read the full Melatonin + Acetaminophen, Chlorzoxazone, Codeine interactionAcetaminophen, CodeineTylenol No.3, Tylenol w/ Codeine
How Acetaminophen, Codeine interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninCytochrome P450 2d6 (cyp2d6) Substrates, Cns Depressants +2 Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP2D6.
Read the full Melatonin + Acetaminophen, Codeine interactionAcetaminophen, Codeine, DoxylamineMersyndol
How Acetaminophen, Codeine, Doxylamine interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninSeizure Threshold Lowering Drugs, Cytochrome P450 1a2 (cyp1a2) Substrates +2 Moderate
Interaction Summary
Theoretically, taking melatonin with drugs that lower the seizure threshold might increase the risk of seizure activity.
Read the full Melatonin + Acetaminophen, Codeine, Doxylamine interactionAcetaminophen, Codeine, MethocarbamolAcetaminophen, Codeine, Methocarbamol, Robaxacet 8
How Acetaminophen, Codeine, Methocarbamol interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninCns Depressants, Cytochrome P450 2d6 (cyp2d6) Substrates +2 Moderate
Interaction Summary
Theoretically, taking melatonin might increase the sedative effects of CNS depressants.
Read the full Melatonin + Acetaminophen, Codeine, Methocarbamol interactionAcetaminophen, Dexbrompheniramine, PseudoephedrineSinadrin Plus
How Acetaminophen, Dexbrompheniramine, Pseudoephedrine interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninCytochrome P450 1a2 (cyp1a2) Substrates, Seizure Threshold Lowering Drugs Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP1A2.
Read the full Melatonin + Acetaminophen, Dexbrompheniramine, Pseudoephedrine interactionAcetaminophen, DextromethorphanTylenol Cough Ex Strength
How Acetaminophen, Dextromethorphan interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninCytochrome P450 2d6 (cyp2d6) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates +1 Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP2D6.
Read the full Melatonin + Acetaminophen, Dextromethorphan interactionAcetaminophen, Dextromethorphan, Doxylamine, PseudoephedrineVicks NyQuil
How Acetaminophen, Dextromethorphan, Doxylamine, Pseudoephedrine interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninCytochrome P450 1a2 (cyp1a2) Substrates, Seizure Threshold Lowering Drugs +2 Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP1A2.
Read the full Melatonin + Acetaminophen, Dextromethorphan, Doxylamine, Pseudoephedrine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PhenylephrineConar-A
How Acetaminophen, Dextromethorphan, Guaifenesin, Phenylephrine interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates +1 Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP3A4.
Read the full Melatonin + Acetaminophen, Dextromethorphan, Guaifenesin, Phenylephrine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PhenylpropanolamineAnatuss
How Acetaminophen, Dextromethorphan, Guaifenesin, Phenylpropanolamine interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates +1 Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP3A4.
Read the full Melatonin + Acetaminophen, Dextromethorphan, Guaifenesin, Phenylpropanolamine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PseudoephedrineRobitussin Cold, Severe Cold, Suphedrine Cold/Cough
How Acetaminophen, Dextromethorphan, Guaifenesin, Pseudoephedrine interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 2d6 (cyp2d6) Substrates +1 Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP1A2.
Read the full Melatonin + Acetaminophen, Dextromethorphan, Guaifenesin, Pseudoephedrine interactionAcetaminophen, Dextromethorphan, Phenylpropanolamine, PyrilamineTheracaps
How Acetaminophen, Dextromethorphan, Phenylpropanolamine, Pyrilamine interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 2d6 (cyp2d6) Substrates +1 Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP3A4.
Read the full Melatonin + Acetaminophen, Dextromethorphan, Phenylpropanolamine, Pyrilamine interactionAcetaminophen, Dextromethorphan, PseudoephedrineAlka-Seltzer PLUS Flu Liquid Gels, Non Aspirin Cold Caps, Tylenol Cold, Tylenol Flu Daytime Ex Strength, Tylenol Flu Ex Strength
How Acetaminophen, Dextromethorphan, Pseudoephedrine interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates +1 Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP1A2.
Read the full Melatonin + Acetaminophen, Dextromethorphan, Pseudoephedrine interactionAcetaminophen, Dichloralantipyrine, IsomethepteneAmidrine, Midchlor, Migquin, Migratine
How Acetaminophen, Dichloralantipyrine, Isometheptene interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninCytochrome P450 1a2 (cyp1a2) Substrates, Cns Depressants Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP1A2.
Read the full Melatonin + Acetaminophen, Dichloralantipyrine, Isometheptene interactionAcetaminophen, Dichloralphenazone, IsomethepteneMidrin
How Acetaminophen, Dichloralphenazone, Isometheptene interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninCns Depressants, Cytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, taking melatonin might increase the sedative effects of CNS depressants.
Read the full Melatonin + Acetaminophen, Dichloralphenazone, Isometheptene interactionAcetaminophen, Dichlorophenazone, IsometheptaneIsocom
How Acetaminophen, Dichlorophenazone, Isometheptane interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninCytochrome P450 1a2 (cyp1a2) Substrates, Cns Depressants Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP1A2.
Read the full Melatonin + Acetaminophen, Dichlorophenazone, Isometheptane interactionAcetaminophen, DiphenhydramineTylenol PM, Tylenol PM Ex Strength
How Acetaminophen, Diphenhydramine interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninCns Depressants, Cytochrome P450 1a2 (cyp1a2) Substrates +1 Moderate
Interaction Summary
Theoretically, taking melatonin might increase the sedative effects of CNS depressants.
Read the full Melatonin + Acetaminophen, Diphenhydramine interactionAcetaminophen, Diphenhydramine, PseudoephedrineChildren's Tylenol Allergy, Cold Control, Contac Night Allergy Relief
How Acetaminophen, Diphenhydramine, Pseudoephedrine interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninCytochrome P450 1a2 (cyp1a2) Substrates, Cns Depressants +1 Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP1A2.
Read the full Melatonin + Acetaminophen, Diphenhydramine, Pseudoephedrine interactionAcetaminophen, Doxylamine, PseudoephedrineEx Strength Tylenol Sinus Nighttime
How Acetaminophen, Doxylamine, Pseudoephedrine interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninSeizure Threshold Lowering Drugs, Cytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, taking melatonin with drugs that lower the seizure threshold might increase the risk of seizure activity.
Read the full Melatonin + Acetaminophen, Doxylamine, Pseudoephedrine interactionAcetaminophen, HydrocodoneAnexsia, Anodynos DHC, Azdone, Co-Gesic, Doucet, Lorcet +9 more
How Acetaminophen, Hydrocodone interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 2d6 (cyp2d6) Substrates +3 Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP1A2.
Read the full Melatonin + Acetaminophen, Hydrocodone interactionAcetaminophen, IbuprofenCombogesic
How Acetaminophen, Ibuprofen interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninCytochrome P450 1a2 (cyp1a2) Substrates, Anticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP1A2.
Read the full Melatonin + Acetaminophen, Ibuprofen interactionAcetaminophen, MeperidineDemerol APAP
How Acetaminophen, Meperidine interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 2d6 (cyp2d6) Substrates +2 Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP1A2.
Read the full Melatonin + Acetaminophen, Meperidine interactionAcetaminophen, MethocarbamolRobaxacet
How Acetaminophen, Methocarbamol interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninCytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP1A2.
Read the full Melatonin + Acetaminophen, Methocarbamol interactionAcetaminophen, OrphenadrineOrfenagesic
How Acetaminophen, Orphenadrine interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninCytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP1A2.
Read the full Melatonin + Acetaminophen, Orphenadrine interactionAcetaminophen, OxycodonePercocet, Roxicet, Tylox, Xartemis XR
How Acetaminophen, Oxycodone interacts with Melatonin-3 3 mg — through 1 ingredient. Tap an ingredient for the detail:
MelatoninCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 2d6 (cyp2d6) Substrates +2 Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP1A2.
Read the full Melatonin + Acetaminophen, Oxycodone interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Melatonin-3 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.
Melatonin
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Immunosuppressants
Theoretically, melatonin might interfere with immunosuppressive therapy.
Melatonin can stimulate immune function. Theoretically, melatonin might interfere with immunosuppressive therapy.
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.
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.
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.
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.
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.
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.
Flumazenil (Romazicon)
Theoretically, taking flumazenil with melatonin might reduce the effects of melatonin.
Animal research shows that flumazenil may inhibit the effect of melatonin.
Brand information
Manufacturer and brand details for Melatonin-3 3 mg, from the product label.
DaVinci Laboratories
See all DaVinci Laboratories products- Name
- DaVinci Laboratories a division of FoodScience LLC
- Street Address
- 929 Harvest Lane
- City
- Williston
- State
- VT
- ZipCode
- 05495
- Phone Number
- 1-800-325-1776
- Web Address
- www.davincilabs.com
Melatonin-3 3 mg by DaVinci Laboratories: Common Questions
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The Full Monographs Behind Melatonin-3 3 mg’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
Melatonin-3 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.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
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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