Medi-Doze Ingredients & Drug Interactions
by Medi-Sulting
What is this page for?
First and foremost: checking Medi-Doze 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
Medi-Doze is a dietary supplement by Medi-Sulting with 3 active ingredients. Its ingredients are commonly taken for trouble falling asleep (insomnia), jet lag, delayed sleep phase syndrome.Based on those ingredients, 1,478 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Melatonin, Valerian, Gamma Aminobutryic Acid. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Medi-Doze by Medi-Sulting
Ask about any prescription or over-the-counter medication and we check it for interactions with Medi-Doze by Medi-Sulting — 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 Medi-Doze by Medi-Sulting
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
Medi-Doze contains three active ingredients in capsule form. Melatonin is a natural hormone that helps regulate sleep-wake cycles.
Valerian is an herbal root used traditionally to promote calm and sleep. GABA (gamma-aminobutyric acid) is a compound the body makes naturally to support relaxation.
The capsule also contains several inactive ingredients—magnesium stearate, silicon dioxide, stearic acid, croscarmellose sodium, dicalcium phosphate, and microcrystalline cellulose—which serve as binders and fillers.
Does it work?
Strong evidence
Melatonin is likely effective for non-24-hour sleep-wake disorder and delayed sleep phase syndrome (a condition where your sleep rhythm is significantly later than desired). It's possibly effective for pre-procedural anxiety, sunburn, and high blood pressure, though the evidence is less robust.
Valerian is possibly effective for insomnia but has insufficient evidence to rate it for restless legs syndrome, pre-procedural anxiety, stress, or period pain. For GABA, we hold insufficient evidence to rate it for any of the conditions listed—anxiety, ADHD, athletic performance, chronic bronchitis, or cerebral palsy—so its effectiveness for these uses is not established in our data.
How safe is it?
Well-documented data
Melatonin is generally well tolerated for short-term use, but long-term safety is uncertain. Common side effects are dizziness, drowsiness, headache, and nausea.
Rare serious concerns include a possible increased seizure risk and mood changes (including sadness, nervousness, and in isolated cases, hallucinations). Long-term use may affect hormone levels and reproductive health.
Pregnancy safety is rated possibly unsafe; breastfeeding safety hasn't been established, so avoid unless your doctor advises otherwise. Valerian is generally well tolerated short-term, with dizziness, drowsiness, and mental slowness being most common.
Vivid dreams and gastrointestinal upset have been reported. If you stop valerian suddenly after extended use, withdrawal symptoms like anxiety, irritability, and insomnia may occur—taper slowly.
Pregnancy and breastfeeding safety haven't been established; avoid unless directed by your doctor. GABA seems generally well tolerated short-term, with drowsiness, nausea, and muscle weakness reported occasionally.
Long-term safety hasn't been well studied. Pregnancy and breastfeeding safety data aren't on file; avoid unless your doctor advises otherwise.
Meds to double-check
Moderate interaction found
Before taking Medi-Doze, check with your doctor or pharmacist if you take blood pressure medications, heart medications like nifedipine, blood thinners or antiplatelet drugs (especially warfarin), seizure medications, diabetes drugs, immune-suppressing medications, or any sedatives or CNS depressants (including alcohol, benzodiazepines, or other sleep aids). The medication checker on this page can help you verify your specific 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.
Medi-Doze is built around ingredients with some evidence for sleep support, especially melatonin for certain sleep disorders and valerian for insomnia—though valerian's evidence is modest. Because all three ingredients interact with multiple medication classes, anyone taking heart medications, blood thinners, seizure drugs, diabetes medications, sedatives, or blood pressure medications needs to check their specific prescriptions before starting this product.
Talk with your doctor or pharmacist about whether Medi-Doze fits your needs and any concerns about your current medications.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 3 of 3 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Dec 18, 2021.
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 Medi-Doze, straight from the product label.
| Brand | Medi-Sulting |
|---|---|
| Barcode (UPC) | 856739005232 |
| Net contents | 30 Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Dec 18, 2021 |
| DSLD ID | 264314 |
| Product type | Other Combinations |
| Supplement form | Capsule |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years) |
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 Medi-Doze by Medi-Sulting, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Melatonin | 6 mg | -- |
| Valerian | 50 mg | -- |
| Gamma Aminobutryic Acid | 30 mg | -- |
Other ingredients: Magnesium Stearate, Silicon Dioxide, Stearic Acid, Croscarmellose Sodium, Dicalcium Phosphate, Microcrystalline Cellulose
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.
Formulation
Made in USA
Sleep aid
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 disease.
Precautions
Warning: Consult your physician before using this product if you are pregnant, lactating, or are being treated for a serious medical condition.
Keep out of reach of children.
If seal is broken, do not use.
Do not take this product if you are driving or using machinery.
Storage
Store in a cool, dry place.
Formula
Melatonin, GABA, Valerian 6mg/30mg/50mg
FDA Statement of Identity
Dietary Supplement
Suggested/Recommended/Usage/Directions
Suggested use: As a dietary supplement; take one capsule 1 to 2 hours before bedtime (suggested).
General Statements
Lot# MST140717-01 Exp. 31July2021 NDC# 76074 40131
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Medi-Doze by Medi-Sulting 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 Medi-Doze by Medi-Sulting
These are the 3 active ingredients this product is made of. Select any to open its full monograph.
Serving size1 Capsule(s) Dosage formCapsule Servings per container30 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.
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 & interactionsValerian
Interacts with902 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...
Valerian monograph & interactionsGamma Aminobutryic Acid
Interacts with419 drugs
GABA is a calming chemical messenger (neurotransmitter) that your body makes on its own, and it is sold as a supplement for stress, anxiety, and sleep...
Gamma Aminobutryic Acid monograph & interactionsOther (inactive) ingredients: Magnesium Stearate, Silicon Dioxide, Stearic Acid, Croscarmellose Sodium, Dicalcium Phosphate, Microcrystalline Cellulose. These complete the product’s ingredient list but are not active constituents.
Medi-Doze by Medi-Sulting Drug Interactions
HelloPharmacist Interaction Report
Medi-Doze by Medi-Sulting contains three active ingredients—melatonin, valerian, and GABA—and together they interact with a wide range of medications.
The most serious documented interaction is melatonin's potential to reduce the effectiveness of extended-release nifedipine (a heart medication), which can raise your blood pressure.
Read the full breakdown — every affected drug type, severity by severity
Melatonin raises concerns with blood thinners and antiplatelet drugs like warfarin, where isolated cases of bleeding have been reported. It may also interfere with diabetes medications (raising the risk of low blood sugar), seizure medications, immune-suppressing drugs, and blood pressure medications.
Valerian adds additive sedation when combined with CNS depressants—sedatives, sleeping pills, anxiety medications, or alcohol—and may affect how your body metabolizes certain drugs. GABA carries a theoretical risk of extra sedation with CNS depressants and may lower blood pressure further if you're already on blood pressure medication.
Although we've checked all three ingredients, we hold no interaction data for several specific medications you might take. Altogether, these interactions span 1,479 individual medications.
Use the medication checker on this page to see if any of your prescriptions or over-the-counter drugs are listed.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Medi-Doze?
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 Medi-Doze interact with 1,478 drugs. Click any drug to see the details.
3 of the 3 ingredients in Medi-Doze interact with drugs. Each result below shows which ingredient is responsible. Melatonin Valerian Gamma Aminobutryic Acid
Acetaminophen, Chlorpheniramine, Phenylephrine, SalicylamideRhinogesic, Rhinogesic JR
How Acetaminophen, Chlorpheniramine, Phenylephrine, Salicylamide interacts with Medi-Doze — through 2 ingredients. Tap an ingredient for the detail:
ValerianCytochrome P450 3a4 (cyp3a4) Substrates, Glucuronidated Drugs Moderate
Interaction Summary
Valerian does not seem to have a clinically relevant effect on levels of drugs metabolized by CYP3A4.
Read the full Valerian + Acetaminophen, Chlorpheniramine, Phenylephrine, Salicylamide interactionMelatoninCytochrome 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, Phenylephrine, Salicylamide interactionAcetaminophen, Chlorpheniramine, PhenylpropanolamineAlumadrine, Conex, Sinadrin Max Strength, Sinulin
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine interacts with Medi-Doze — through 2 ingredients. Tap an ingredient for the detail:
ValerianCytochrome P450 3a4 (cyp3a4) Substrates, Glucuronidated Drugs Moderate
Interaction Summary
Valerian does not seem to have a clinically relevant effect on levels of drugs metabolized by CYP3A4.
Read the full Valerian + Acetaminophen, Chlorpheniramine, Phenylpropanolamine interactionMelatoninCytochrome 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 interactionAcetaminophen, Chlorpheniramine, Phenylpropanolamine, OpiumHista-Derfule
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interacts with Medi-Doze — through 3 ingredients. Tap an ingredient for the detail:
MelatoninCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates +2 Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP3A4.
Read the full Melatonin + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interactionValerianGlucuronidated Drugs, Cns Depressants +1 Moderate
Interaction Summary
Valerian might weakly inhibit glucuronidation and increase concentrations of drugs metabolized by UGT1A1 and UGT2B7.
Read the full Valerian + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interactionGamma Aminobutryic AcidCns Depressants Minor
Interaction Summary
Theoretically, GABA might have additive sedative effects when used in conjunction with CNS depressants.
Read the full Gamma Aminobutryic Acid + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interactionAcetaminophen, Chlorpheniramine, Phenylpropanolamine, PhenyltoloxamineNorel Plus
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Phenyltoloxamine interacts with Medi-Doze — through 2 ingredients. Tap an ingredient for the detail:
ValerianCytochrome P450 3a4 (cyp3a4) Substrates, Glucuronidated Drugs Moderate
Interaction Summary
Valerian does not seem to have a clinically relevant effect on levels of drugs metabolized by CYP3A4.
Read the full Valerian + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Phenyltoloxamine interactionMelatoninCytochrome 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, 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 Medi-Doze — through 2 ingredients. 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, Pseudoephedrine interactionValerianGlucuronidated Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Valerian might weakly inhibit glucuronidation and increase concentrations of drugs metabolized by UGT1A1 and UGT2B7.
Read the full Valerian + Acetaminophen, Chlorpheniramine, Pseudoephedrine interactionAcetaminophen, ChlorzoxazoneAcetazone Forte, Extra Strength Tylenol Aches & Strains, Parafon Forte
How Acetaminophen, Chlorzoxazone interacts with Medi-Doze — through 2 ingredients. Tap an ingredient for the detail:
ValerianGlucuronidated Drugs Moderate
Interaction Summary
Valerian might weakly inhibit glucuronidation and increase concentrations of drugs metabolized by UGT1A1 and UGT2B7.
Read the full Valerian + Acetaminophen, Chlorzoxazone interactionMelatoninCytochrome 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 Medi-Doze — through 3 ingredients. Tap an ingredient for the detail:
MelatoninCytochrome P450 1a2 (cyp1a2) Substrates, Cns Depressants +2 Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP1A2.
Read the full Melatonin + Acetaminophen, Chlorzoxazone, Codeine interactionValerianGlucuronidated Drugs, Cytochrome P450 2d6 (cyp2d6) Substrates +1 Moderate
Interaction Summary
Valerian might weakly inhibit glucuronidation and increase concentrations of drugs metabolized by UGT1A1 and UGT2B7.
Read the full Valerian + Acetaminophen, Chlorzoxazone, Codeine interactionGamma Aminobutryic AcidCns Depressants Minor
Interaction Summary
Theoretically, GABA might have additive sedative effects when used in conjunction with CNS depressants.
Read the full Gamma Aminobutryic Acid + Acetaminophen, Chlorzoxazone, Codeine interactionAcetaminophen, CodeineTylenol No.3, Tylenol w/ Codeine
How Acetaminophen, Codeine interacts with Medi-Doze — through 3 ingredients. Tap an ingredient for the detail:
ValerianCns Depressants, Glucuronidated Drugs +1 Moderate
Interaction Summary
Valerian can have additive sedative effects when used concomitantly with CNS depressant drugs.
Read the full Valerian + Acetaminophen, Codeine interactionMelatoninCytochrome P450 2d6 (cyp2d6) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates +2 Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP2D6.
Read the full Melatonin + Acetaminophen, Codeine interactionGamma Aminobutryic AcidCns Depressants Minor
Interaction Summary
Theoretically, GABA might have additive sedative effects when used in conjunction with CNS depressants.
Read the full Gamma Aminobutryic Acid + Acetaminophen, Codeine interactionAcetaminophen, Codeine, DoxylamineMersyndol
How Acetaminophen, Codeine, Doxylamine interacts with Medi-Doze — through 3 ingredients. 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, Doxylamine interactionValerianCytochrome P450 2d6 (cyp2d6) Substrates, Cns Depressants +1 Moderate
Interaction Summary
Valerian does not seem to have a clinically relevant effect on levels of drugs metabolized by CYP2D6.
Read the full Valerian + Acetaminophen, Codeine, Doxylamine interactionGamma Aminobutryic AcidCns Depressants Minor
Interaction Summary
Theoretically, GABA might have additive sedative effects when used in conjunction with CNS depressants.
Read the full Gamma Aminobutryic Acid + Acetaminophen, Codeine, Doxylamine interactionAcetaminophen, Codeine, MethocarbamolAcetaminophen, Codeine, Methocarbamol, Robaxacet 8
How Acetaminophen, Codeine, Methocarbamol interacts with Medi-Doze — through 3 ingredients. Tap an ingredient for the detail:
ValerianCytochrome P450 2d6 (cyp2d6) Substrates, Glucuronidated Drugs +1 Moderate
Interaction Summary
Valerian does not seem to have a clinically relevant effect on levels of drugs metabolized by CYP2D6.
Read the full Valerian + Acetaminophen, Codeine, Methocarbamol interactionMelatoninCytochrome P450 1a2 (cyp1a2) Substrates, Cns Depressants +2 Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP1A2.
Read the full Melatonin + Acetaminophen, Codeine, Methocarbamol interactionGamma Aminobutryic AcidCns Depressants Minor
Interaction Summary
Theoretically, GABA might have additive sedative effects when used in conjunction with CNS depressants.
Read the full Gamma Aminobutryic Acid + Acetaminophen, Codeine, Methocarbamol interactionAcetaminophen, Dexbrompheniramine, PseudoephedrineSinadrin Plus
How Acetaminophen, Dexbrompheniramine, Pseudoephedrine interacts with Medi-Doze — through 2 ingredients. 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 interactionValerianGlucuronidated Drugs Moderate
Interaction Summary
Valerian might weakly inhibit glucuronidation and increase concentrations of drugs metabolized by UGT1A1 and UGT2B7.
Read the full Valerian + Acetaminophen, Dexbrompheniramine, Pseudoephedrine interactionAcetaminophen, DextromethorphanTylenol Cough Ex Strength
How Acetaminophen, Dextromethorphan interacts with Medi-Doze — through 2 ingredients. Tap an ingredient for the detail:
ValerianGlucuronidated Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates +1 Moderate
Interaction Summary
Valerian might weakly inhibit glucuronidation and increase concentrations of drugs metabolized by UGT1A1 and UGT2B7.
Read the full Valerian + Acetaminophen, Dextromethorphan interactionMelatoninCytochrome P450 2d6 (cyp2d6) Substrates, Cytochrome P450 1a2 (cyp1a2) 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 Medi-Doze — through 2 ingredients. Tap an ingredient for the detail:
ValerianCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 2d6 (cyp2d6) Substrates +1 Moderate
Interaction Summary
Valerian does not seem to have a clinically relevant effect on levels of drugs metabolized by CYP3A4.
Read the full Valerian + Acetaminophen, Dextromethorphan, Doxylamine, Pseudoephedrine interactionMelatoninCytochrome P450 3a4 (cyp3a4) Substrates, Seizure Threshold Lowering Drugs +2 Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP3A4.
Read the full Melatonin + Acetaminophen, Dextromethorphan, Doxylamine, Pseudoephedrine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PhenylephrineConar-A
How Acetaminophen, Dextromethorphan, Guaifenesin, Phenylephrine interacts with Medi-Doze — through 2 ingredients. Tap an ingredient for the detail:
ValerianGlucuronidated Drugs, Cytochrome P450 2d6 (cyp2d6) Substrates +1 Moderate
Interaction Summary
Valerian might weakly inhibit glucuronidation and increase concentrations of drugs metabolized by UGT1A1 and UGT2B7.
Read the full Valerian + Acetaminophen, Dextromethorphan, Guaifenesin, Phenylephrine interactionMelatoninCytochrome P450 2d6 (cyp2d6) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates +1 Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP2D6.
Read the full Melatonin + Acetaminophen, Dextromethorphan, Guaifenesin, Phenylephrine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PhenylpropanolamineAnatuss
How Acetaminophen, Dextromethorphan, Guaifenesin, Phenylpropanolamine interacts with Medi-Doze — through 2 ingredients. 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, Guaifenesin, Phenylpropanolamine interactionValerianCytochrome P450 3a4 (cyp3a4) Substrates, Glucuronidated Drugs +1 Moderate
Interaction Summary
Valerian does not seem to have a clinically relevant effect on levels of drugs metabolized by CYP3A4.
Read the full Valerian + Acetaminophen, Dextromethorphan, Guaifenesin, Phenylpropanolamine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PseudoephedrineRobitussin Cold, Severe Cold, Suphedrine Cold/Cough
How Acetaminophen, Dextromethorphan, Guaifenesin, Pseudoephedrine interacts with Medi-Doze — through 2 ingredients. Tap an ingredient for the detail:
ValerianCytochrome P450 2d6 (cyp2d6) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates +1 Moderate
Interaction Summary
Valerian does not seem to have a clinically relevant effect on levels of drugs metabolized by CYP2D6.
Read the full Valerian + Acetaminophen, Dextromethorphan, Guaifenesin, Pseudoephedrine interactionMelatoninCytochrome P450 2d6 (cyp2d6) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates +1 Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP2D6.
Read the full Melatonin + Acetaminophen, Dextromethorphan, Guaifenesin, Pseudoephedrine interactionAcetaminophen, Dextromethorphan, Phenylpropanolamine, PyrilamineTheracaps
How Acetaminophen, Dextromethorphan, Phenylpropanolamine, Pyrilamine interacts with Medi-Doze — through 2 ingredients. 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, Phenylpropanolamine, Pyrilamine interactionValerianCytochrome P450 2d6 (cyp2d6) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates +1 Moderate
Interaction Summary
Valerian does not seem to have a clinically relevant effect on levels of drugs metabolized by CYP2D6.
Read the full Valerian + 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 Medi-Doze — through 2 ingredients. Tap an ingredient for the detail:
ValerianGlucuronidated Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates +1 Moderate
Interaction Summary
Valerian might weakly inhibit glucuronidation and increase concentrations of drugs metabolized by UGT1A1 and UGT2B7.
Read the full Valerian + Acetaminophen, Dextromethorphan, Pseudoephedrine interactionMelatoninCytochrome 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 Medi-Doze — through 3 ingredients. 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, Dichloralantipyrine, Isometheptene interactionValerianGlucuronidated Drugs, Cns Depressants Moderate
Interaction Summary
Valerian might weakly inhibit glucuronidation and increase concentrations of drugs metabolized by UGT1A1 and UGT2B7.
Read the full Valerian + Acetaminophen, Dichloralantipyrine, Isometheptene interactionGamma Aminobutryic AcidCns Depressants Minor
Interaction Summary
Theoretically, GABA might have additive sedative effects when used in conjunction with CNS depressants.
Read the full Gamma Aminobutryic Acid + Acetaminophen, Dichloralantipyrine, Isometheptene interactionAcetaminophen, Dichloralphenazone, IsomethepteneMidrin
How Acetaminophen, Dichloralphenazone, Isometheptene interacts with Medi-Doze — through 3 ingredients. Tap an ingredient for the detail:
ValerianCns Depressants, Glucuronidated Drugs Moderate
Interaction Summary
Valerian can have additive sedative effects when used concomitantly with CNS depressant drugs.
Read the full Valerian + Acetaminophen, Dichloralphenazone, Isometheptene interactionMelatoninCytochrome P450 1a2 (cyp1a2) Substrates, Cns Depressants Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP1A2.
Read the full Melatonin + Acetaminophen, Dichloralphenazone, Isometheptene interactionGamma Aminobutryic AcidCns Depressants Minor
Interaction Summary
Theoretically, GABA might have additive sedative effects when used in conjunction with CNS depressants.
Read the full Gamma Aminobutryic Acid + Acetaminophen, Dichloralphenazone, Isometheptene interactionAcetaminophen, Dichlorophenazone, IsometheptaneIsocom
How Acetaminophen, Dichlorophenazone, Isometheptane interacts with Medi-Doze — through 3 ingredients. Tap an ingredient for the detail:
ValerianGlucuronidated Drugs, Cns Depressants Moderate
Interaction Summary
Valerian might weakly inhibit glucuronidation and increase concentrations of drugs metabolized by UGT1A1 and UGT2B7.
Read the full Valerian + Acetaminophen, Dichlorophenazone, Isometheptane interactionMelatoninCns 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, Dichlorophenazone, Isometheptane interactionGamma Aminobutryic AcidCns Depressants Minor
Interaction Summary
Theoretically, GABA might have additive sedative effects when used in conjunction with CNS depressants.
Read the full Gamma Aminobutryic Acid + Acetaminophen, Dichlorophenazone, Isometheptane interactionAcetaminophen, DiphenhydramineTylenol PM, Tylenol PM Ex Strength
How Acetaminophen, Diphenhydramine interacts with Medi-Doze — through 3 ingredients. Tap an ingredient for the detail:
ValerianGlucuronidated Drugs, Cns Depressants Moderate
Interaction Summary
Valerian might weakly inhibit glucuronidation and increase concentrations of drugs metabolized by UGT1A1 and UGT2B7.
Read the full Valerian + Acetaminophen, Diphenhydramine interactionMelatoninCytochrome 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, Diphenhydramine interactionGamma Aminobutryic AcidCns Depressants Minor
Interaction Summary
Theoretically, GABA might have additive sedative effects when used in conjunction with CNS depressants.
Read the full Gamma Aminobutryic Acid + Acetaminophen, Diphenhydramine interactionAcetaminophen, Diphenhydramine, PseudoephedrineChildren's Tylenol Allergy, Cold Control, Contac Night Allergy Relief
How Acetaminophen, Diphenhydramine, Pseudoephedrine interacts with Medi-Doze — through 3 ingredients. 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, Pseudoephedrine interactionValerianCns Depressants, Glucuronidated Drugs Moderate
Interaction Summary
Valerian can have additive sedative effects when used concomitantly with CNS depressant drugs.
Read the full Valerian + Acetaminophen, Diphenhydramine, Pseudoephedrine interactionGamma Aminobutryic AcidCns Depressants Minor
Interaction Summary
Theoretically, GABA might have additive sedative effects when used in conjunction with CNS depressants.
Read the full Gamma Aminobutryic Acid + Acetaminophen, Diphenhydramine, Pseudoephedrine interactionAcetaminophen, Doxylamine, PseudoephedrineEx Strength Tylenol Sinus Nighttime
How Acetaminophen, Doxylamine, Pseudoephedrine interacts with Medi-Doze — through 2 ingredients. Tap an ingredient for the detail:
ValerianGlucuronidated Drugs Moderate
Interaction Summary
Valerian might weakly inhibit glucuronidation and increase concentrations of drugs metabolized by UGT1A1 and UGT2B7.
Read the full Valerian + Acetaminophen, Doxylamine, Pseudoephedrine interactionMelatoninSeizure 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 Medi-Doze — through 3 ingredients. Tap an ingredient for the detail:
MelatoninCytochrome P450 1a2 (cyp1a2) Substrates, Cns Depressants +3 Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP1A2.
Read the full Melatonin + Acetaminophen, Hydrocodone interactionValerianGlucuronidated Drugs, Cns Depressants +2 Moderate
Interaction Summary
Valerian might weakly inhibit glucuronidation and increase concentrations of drugs metabolized by UGT1A1 and UGT2B7.
Read the full Valerian + Acetaminophen, Hydrocodone interactionGamma Aminobutryic AcidCns Depressants Minor
Interaction Summary
Theoretically, GABA might have additive sedative effects when used in conjunction with CNS depressants.
Read the full Gamma Aminobutryic Acid + Acetaminophen, Hydrocodone interactionAcetaminophen, IbuprofenCombogesic
How Acetaminophen, Ibuprofen interacts with Medi-Doze — through 2 ingredients. Tap an ingredient for the detail:
MelatoninAnticoagulant/antiplatelet Drugs, Cytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, melatonin may have anticoagulant effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Melatonin + Acetaminophen, Ibuprofen interactionValerianGlucuronidated Drugs Moderate
Interaction Summary
Valerian might weakly inhibit glucuronidation and increase concentrations of drugs metabolized by UGT1A1 and UGT2B7.
Read the full Valerian + Acetaminophen, Ibuprofen interactionAcetaminophen, MeperidineDemerol APAP
How Acetaminophen, Meperidine interacts with Medi-Doze — through 3 ingredients. Tap an ingredient for the detail:
MelatoninCytochrome P450 1a2 (cyp1a2) Substrates, Cns Depressants +2 Moderate
Interaction Summary
Theoretically, melatonin might increase levels of drugs metabolized by CYP1A2.
Read the full Melatonin + Acetaminophen, Meperidine interactionValerianGlucuronidated Drugs, Cytochrome P450 2d6 (cyp2d6) Substrates +1 Moderate
Interaction Summary
Valerian might weakly inhibit glucuronidation and increase concentrations of drugs metabolized by UGT1A1 and UGT2B7.
Read the full Valerian + Acetaminophen, Meperidine interactionGamma Aminobutryic AcidCns Depressants Minor
Interaction Summary
Theoretically, GABA might have additive sedative effects when used in conjunction with CNS depressants.
Read the full Gamma Aminobutryic Acid + Acetaminophen, Meperidine interactionAcetaminophen, MethocarbamolRobaxacet
How Acetaminophen, Methocarbamol interacts with Medi-Doze — through 2 ingredients. 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 interactionValerianGlucuronidated Drugs Moderate
Interaction Summary
Valerian might weakly inhibit glucuronidation and increase concentrations of drugs metabolized by UGT1A1 and UGT2B7.
Read the full Valerian + Acetaminophen, Methocarbamol interactionAcetaminophen, OrphenadrineOrfenagesic
How Acetaminophen, Orphenadrine interacts with Medi-Doze — through 2 ingredients. 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 interactionValerianGlucuronidated Drugs Moderate
Interaction Summary
Valerian might weakly inhibit glucuronidation and increase concentrations of drugs metabolized by UGT1A1 and UGT2B7.
Read the full Valerian + Acetaminophen, Orphenadrine interactionAcetaminophen, OxycodonePercocet, Roxicet, Tylox, Xartemis XR
How Acetaminophen, Oxycodone interacts with Medi-Doze — through 3 ingredients. Tap an ingredient for the detail:
ValerianGlucuronidated Drugs, Cns Depressants +1 Moderate
Interaction Summary
Valerian might weakly inhibit glucuronidation and increase concentrations of drugs metabolized by UGT1A1 and UGT2B7.
Read the full Valerian + Acetaminophen, Oxycodone interactionMelatoninCytochrome 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 interactionGamma Aminobutryic AcidCns Depressants Minor
Interaction Summary
Theoretically, GABA might have additive sedative effects when used in conjunction with CNS depressants.
Read the full Gamma Aminobutryic Acid + Acetaminophen, Oxycodone interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Medi-Doze 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.
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.
Valerian
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.
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.
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.
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.
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.
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.
Gamma Aminobutryic Acid
Antihypertensive Drugs
Theoretically, taking GABA with antihypertensive drugs might increase the risk of hypotension.
Some clinical research shows that GABA can decrease blood pressure in patients with hypertension.
Cns Depressants
Theoretically, GABA might have additive sedative effects when used in conjunction with CNS depressants. However, it is unclear if this concern is clinically relevant.
Endogenous GABA has well-established relaxant effects and GABA(A) receptors have an established physiological role in sleep. However, the effects of GABA supplements are unclear, as it is unknown whether exogenous GABA crosses the blood-brain barrier. Although there have been limited reports of drowsiness or tiredness with GABA supplements, these effects have not been widely reported in clinical studies. Additionally, intravenous GABA 0.1-1 mg/kg has been shown to induce anxiety in a dose-dependent manner.
Brand information
Manufacturer and brand details for Medi-Doze, from the product label.
Medi-Sulting
See all Medi-Sulting products- Name
- Medi-Sulting, LLC
- Street Address
- 15227 N. Zapata Drive
- City
- Fountain Hills
- State
- AZ
- ZipCode
- 85268
- Phone Number
- 888-907-2833
- Web Address
- www.medi-sulting.com
Medi-Doze by Medi-Sulting: Common Questions
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Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
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The Full Monographs Behind Medi-Doze’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Melatonin
Interacts with 1,461 drugsMelatonin 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 → Herb & supplement monographValerian
Interacts with 902 drugsValerian 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 → Herb & supplement monographGamma-aminobutyric Acid (gaba)
Interacts with 419 drugsGABA is a calming chemical messenger (neurotransmitter) that your body makes on its own, and it is sold as a supplement for stress, anxiety, and sleep. The science behind oral GABA supplemen...
Read the full Gamma-aminobutyric Acid (gaba) monograph →Sources & How We Checked
Medi-Doze'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 167 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
- Voordouw BC, Euser R, Verdonk RE, et al. Melatonin and melatonin-progestin combinations alter pituitary-ovarian function in women and can inhibit ovulation. J Clin Endocrinol Metab 1992;74:108-17. DOI
- Ellis CM, Lemmens G, Parkes JD. Melatonin and insomnia. J Sleep Res 1996;5:61-5. PubMed
- 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
- Claustrat B, Brun J, David M, et al. Melatonin and jet lag: confirmatory result using a simplified protocol. Biol Psychiatr 1992;32:705-11.
- 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
- 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
- Pierce A. The American Pharmaceutical Association Practical Guide to Natural Medicines. New York: The Stonesong Press, 1999:19.
- 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
- Carman JS, Post RM, Buswell R, et al. Negative effects of melatonin on depression. Am J Psychiatry 1976;133:1181-1186. PubMed
- Hartter S, Grozinger M, Weigmann H, et al. Increased bioavailability of oral melatonin after fluvoxamine coadministration. Clin Pharmacol Ther 2000;67:1-6.
- Fetrow CW, Avila JR. Professional's Handbook of Complementary & Alternative Medicines. 1st ed. Springhouse, PA: Springhouse Corp., 1999.
- 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
- 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.
- 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
- 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.
- Sheldon SH. Pro-convulsant effects of oral melatonin in neurologically disabled children. Lancet 1998;351:1254. PubMed
- Hartter S, Grozinger M, Weigmann H, et al. Increased bioavailability of oral melatonin after fluvoxamine coadministration. Clin Pharmacol Ther 2000;67:1-6.
- 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.
- Herxheimer A, Petrie KJ. Melatonin for preventing and treating jet lag. Cochrane Database Syst Rev 2001;(1):CD001520.
- Briggs, Freeman, Yafee. Update Drugs in Pregnancy and Lactation. Lippincott Williams & Wilkins, 2001.
- 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
- Herxheimer A, Petrie KJ. Melatonin for the prevention and treatment of jet lag. Cochrane Database Syst Rev 2002;2:CD001520. PubMed
- 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
- Sandyk R, Tsagas N, Anninos PA. Melatonin as a proconvulsive hormone in humans. Int J Neurosci 1992;63:125-35.. PubMed
- Golombek DA, Escolar E, Burin LJ, et al. Chronopharmacology of melatonin: inhibition by benzodiazepine antagonism. Chronobiol Int 1992;9:124-31.. PubMed
- 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
- 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
- Williamson BL, Tomlinson AJ, Naylor S, Gleich GJ. Contaminants in commercial preparations of melatonin. Mayo Clin Proc 1997;72:1094-5. PubMed
- 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
- Stewart LS. Endogenous melatonin and epileptogenesis: facts and hypothesis. Int J Neurosci 2001;107:77-85.. PubMed
- 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
- 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
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- de Bie TH, Witkamp RF, Balvers MG, Jongsma MA. Effects of ?-aminobutyric acid supplementation on glucose control in adults with prediabetes: A double-blind, randomized, placebo-controlled trial. Am J Clin Nutr 2023;118(3):708-719. PubMed
See these in context on the Gamma-aminobutyric Acid (gaba) monograph →
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