Propadrol EP Ingredients & Drug Interactions
by EST
What is this page for?
First and foremost: checking Propadrol EP 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
Propadrol EP is a dietary supplement by EST with 4 active ingredients. Its ingredients are commonly taken for chronic venous insufficiency, hemorrhoids, leg swelling and heaviness.Based on those ingredients, 888 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are 3,5,7-Trihydroxy-4 Methoxyflavone, 7-Methoxy-2-Phenyl-4H-Chromen-One. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Propadrol EP by EST
Ask about any prescription or over-the-counter medication and we check it for interactions with Propadrol EP by EST — 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 Propadrol EP by EST
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
Low disclosure
Propadrol EP contains 4 active ingredients. The main one is diosmin (also called 3,5,7-Trihydroxy-4 Methoxyflavone), a plant compound used to support vein and circulatory health.
The other actives are 7-methoxyflavone, D-Aspartic Acid, and N-Methyl-D-Asparate. The product also contains inactive ingredients — magnesium stearate, gelatin, FD&C Blue #1, and titanium dioxide — which serve as binders, capsule material, and colorants.
Does it work?
Moderate evidence
Diosmin is possibly effective for chronic venous insufficiency (poor blood flow in the veins of the legs), venous leg ulcers, and hemorrhoids, based on clinical evidence. The evidence for back pain and diabetic nerve pain (diabetic neuropathy) is insufficient — we don't have enough reliable data to say whether it works for those.
The effectiveness of 7-methoxyflavone, D-Aspartic Acid, and N-Methyl-D-Asparate has not been established in the data we hold.
How safe is it?
Some data gaps
Diosmin is generally well tolerated in short-term use, though long-term safety is less well studied. The most common side effects are abdominal pain, diarrhea, dizziness, gastritis, nausea, and skin inflammation or redness.
Rare serious effects include cardiac arrhythmias (irregular heartbeat) and hemolytic anemia (breakdown of red blood cells). 7-Methoxyflavone has very limited human safety data — it cannot be called clearly safe, and it may have hormonal effects, so it should be avoided pending more research.
No adverse-effect data are on file for D-Aspartic Acid or N-Methyl-D-Asparate.
Meds to double-check
Moderate interaction found
Before starting Propadrol EP, check with your doctor or pharmacist if you take blood thinners or antiplatelet drugs (like warfarin, aspirin, clopidogrel) — diosmin may raise bleeding risk. Also double-check nonsteroidal anti-inflammatory drugs (NSAIDs like diclofenac), muscle relaxants like chlorzoxazone, seizure medications like carbamazepine, testosterone therapy, or aromatase inhibitors (used for breast cancer).
The product may increase levels or effects of these drugs.
The bottom line
Scorecard at a glanceFormula with limited ingredient disclosure with some supporting evidence behind its ingredients' uses. Moderate medication interactions have been identified, and some safety-information gaps remain.
This product is mainly diosmin, which has solid evidence for circulatory and vein conditions. However, its moderate interactions with blood thinners, common pain relievers, seizure drugs, and hormone therapies make it important to review your exact medications before starting.
The 7-methoxyflavone ingredient lacks safety data and may affect hormones. Talk with your doctor or pharmacist before taking Propadrol EP if you're on any regular medications.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 2 of 4 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Nov 25, 2011.
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 Propadrol EP, straight from the product label.
| Brand | EST |
|---|---|
| Barcode (UPC) | 895524000625 |
| Net contents | 120 Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Nov 25, 2011 |
| DSLD ID | 1965 |
| Product type | Non-nutrient/non-botanical |
| Supplement form | Capsule |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Adult Male (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 Propadrol EP by EST, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| D-Aspartic Acid | 0 NP | -- |
| 3,5,7-Trihydroxy-4 Methoxyflavone | 0 NP | -- |
| Proprietary Propadrol Blend | 200 mg | -- |
| 7-Methoxy-2-Phenyl-4H-Chromen-One | 0 NP | -- |
| Methyl-2A | 3 Gram(s) | -- |
| N-Methyl-D-Asparate | 0 NP | -- |
Other ingredients: Magnesium Stearate, Gelatin, FD&C Blue #1, Ti02
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.
FDA Statement of Identity
Dietary Supplement
Suggested/Recommended/Usage/Directions
Do not exceed recommended dose.
Suggested Use: Take four (4) capsules once daily. DO NOT exceed recommended dose. Use only for a period of 30 days. Wait 90 days prior to using the product again.
Use only as directed.
Precautions
Keep out of reach of children.
Warning: Do not use if you are pregnant or nursing, or at risk for high blood pressure, liver, prostate, diabetes, or psychiatric disease.
Do not purchase if seal is broken
Do not use this product if under the age of 18.
If you have any medical condition, seek professional medical advice before taking this or any supplement.
FDA Disclaimer Statement
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
Storage
Protect from heat, light and moisture.
Store at 15º-30ºC(59º-86º F)
General Statements
3.2 g
5 Alpha Reductase Inhibitor
Anti-Aromatase/Testosterone Inducer
ENGINEERED SPORTS TECHNOLOGY
Fortified with Methyl-2a
Pharmacokinectically designed to Induce Free Testosterone Promotes 5 Alpha Reductase Inhibitation Promotes Sexual Vigor Fortified with Methyl-2a for Enhanced Optimization
There are no typical results with use of this product.
General
Product Code: 305
Brand IP Statement(s)
Elite Performance Series(TM)
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Propadrol EP by EST 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 Propadrol EP by EST
These are the 4 active ingredients this product is made of. Select any to open its full monograph.
Serving size4 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.
Proprietary Propadrol Blend
Methyl-2A
- › D-Aspartic Acid
- › N-Methyl-D-Asparate
Other (inactive) ingredients: Magnesium Stearate, Gelatin, FD&C Blue #1, Ti02. These complete the product’s ingredient list but are not active constituents.
Propadrol EP by EST Drug Interactions
HelloPharmacist Interaction Report
Propadrol EP by EST contains two ingredients with documented interactions: diosmin and 7-methoxyflavone.
Diosmin carries the most serious concern — it's a Moderate-severity interaction with blood thinners (anticoagulants) and antiplatelet drugs, where it may increase bleeding risk, including a reported case of brain bleeding in a patient on warfarin and aspirin.
Read the full breakdown — every affected drug type, severity by severity
Diosmin also has Moderate interactions with several drug-metabolizing enzyme systems. It may slow the breakdown of nonsteroidal anti-inflammatory drugs like diclofenac, muscle relaxants like chlorzoxazone, and the seizure medication carbamazepine — raising their blood levels and effects.
It theoretically affects other drugs metabolized by CYP2C9, CYP3A4, and CYP2E1 enzymes, and may increase levels of drugs transported by P-glycoprotein.
7-Methoxyflavone carries Moderate interactions with testosterone therapy and aromatase inhibitors (used in hormone-sensitive breast cancer). It may amplify the effects and side effects of these drugs through its action on hormone-conversion enzymes.
We could not check D-Aspartic Acid and N-Methyl-D-Asparate — we hold no interaction data for them. Altogether, these interactions span 889 individual medications.
Use the medication checker below to see if any of yours are affected before you start.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Propadrol EP?
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 Propadrol EP interact with 888 drugs. Click any drug to see the details.
2 of the 4 ingredients in Propadrol EP interact with drugs. Each result below shows which ingredient is responsible. 3,5,7-Trihydroxy-4 Methoxyflavone 7-Methoxy-2-Phenyl-4H-Chromen-One
Ado-trastuzumab EmtansineKadcyla
How Ado-trastuzumab Emtansine interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, diosmin might inhibit the metabolism of CYP3A4 substrates.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Ado-trastuzumab Emtansine interactionAbciximabReoPro
How Abciximab interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, diosmin may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Abciximab interactionAbemaciclibVerzenio
How Abemaciclib interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, diosmin might inhibit the metabolism of CYP3A4 substrates.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Abemaciclib interactionAbiraterone
How Abiraterone interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, diosmin might inhibit the metabolism of CYP3A4 substrates.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Abiraterone interactionAbiraterone AcetateYonsa, Zytiga
How Abiraterone Acetate interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, diosmin might inhibit the metabolism of CYP3A4 substrates.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Abiraterone Acetate interactionAbrocitinibCibinqo
How Abrocitinib interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneAnticoagulant/antiplatelet Drugs, Cytochrome P450 2c9 (cyp2c9) Substrates Moderate
Interaction Summary
Theoretically, diosmin may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Abrocitinib interactionAcalabrutinibCalquence
How Acalabrutinib interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneCytochrome P450 3a4 (cyp3a4) Substrates, P-glycoprotein Substrates Moderate
Interaction Summary
Theoretically, diosmin might inhibit the metabolism of CYP3A4 substrates.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Acalabrutinib interactionAcenocoumarolSintrom
How Acenocoumarol interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, diosmin may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Acenocoumarol interactionAcetaminophenChildren's Tylenol, Children's Tylenol Meltaways, Tylenol, Tylenol Ex Strength
How Acetaminophen interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneCytochrome P450 2e1 (cyp2e1) Substrates Moderate
Interaction Summary
Theoretically, diosmin might inhibit the metabolism of CYP2E1 substrates.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Acetaminophen interactionAcetaminophen, AspirinGemnisyn
How Acetaminophen, Aspirin interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneAnticoagulant/antiplatelet Drugs, Cytochrome P450 2e1 (cyp2e1) Substrates Moderate
Interaction Summary
Theoretically, diosmin may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Acetaminophen, Aspirin interactionAcetaminophen, Aspirin, CaffeineExcedrin, Excedrin Extra Strength, Excedrin Migraine
How Acetaminophen, Aspirin, Caffeine interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneAnticoagulant/antiplatelet Drugs, Cytochrome P450 2e1 (cyp2e1) Substrates +1 Moderate
Interaction Summary
Theoretically, diosmin may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Acetaminophen, Aspirin, Caffeine interactionAcetaminophen, Brompheniramine, PhenylpropanolamineDimetapp Cold and Flu
How Acetaminophen, Brompheniramine, Phenylpropanolamine interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneCytochrome P450 2e1 (cyp2e1) Substrates Moderate
Interaction Summary
Theoretically, diosmin might inhibit the metabolism of CYP2E1 substrates.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Acetaminophen, Brompheniramine, Phenylpropanolamine interactionAcetaminophen, ButalbitalAxocet, Bancap, Bucet, Butex Forte, Esgic CF, Orbivan CF +5 more
How Acetaminophen, Butalbital interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneCytochrome P450 2e1 (cyp2e1) Substrates Moderate
Interaction Summary
Theoretically, diosmin might inhibit the metabolism of CYP2E1 substrates.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Acetaminophen, Butalbital interactionAcetaminophen, Butalbital, CaffeineEsgic, Esgic Plus, Fiogesic, Fioricet, Repan, Tecnal +1 more
How Acetaminophen, Butalbital, Caffeine interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneCytochrome P450 2e1 (cyp2e1) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, diosmin might inhibit the metabolism of CYP2E1 substrates.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Acetaminophen, Butalbital, Caffeine interactionAcetaminophen, Butalbital, Caffeine, CodeineEsgic with Codeine, Fioricet w/ Codeine
How Acetaminophen, Butalbital, Caffeine, Codeine interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 2e1 (cyp2e1) Substrates Moderate
Interaction Summary
Theoretically, diosmin might inhibit the metabolism of CYP3A4 substrates.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Acetaminophen, Butalbital, Caffeine, Codeine interactionAcetaminophen, Butalbital, CodeineBancap w/ Codeine
How Acetaminophen, Butalbital, Codeine interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneCytochrome P450 2e1 (cyp2e1) Substrates Moderate
Interaction Summary
Theoretically, diosmin might inhibit the metabolism of CYP2E1 substrates.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Acetaminophen, Butalbital, Codeine interactionAcetaminophen, Butalbital, Codeine PhosphatePhrenilin #3
How Acetaminophen, Butalbital, Codeine Phosphate interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneCytochrome P450 2e1 (cyp2e1) Substrates Moderate
Interaction Summary
Theoretically, diosmin might inhibit the metabolism of CYP2E1 substrates.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Acetaminophen, Butalbital, Codeine Phosphate interactionAcetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, PhenylephrineHycomine Compound
How Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneCytochrome P450 2e1 (cyp2e1) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, diosmin might inhibit the metabolism of CYP2E1 substrates.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interactionAcetaminophen, Caffeine, CodeineGesic C15, Gesic C30, Gesic C8, Lenoltec 1, Lenoltec 2, Lenoltec 3 +1 more
How Acetaminophen, Caffeine, Codeine interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 2e1 (cyp2e1) Substrates Moderate
Interaction Summary
Theoretically, diosmin might inhibit the metabolism of CYP3A4 substrates.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Acetaminophen, Caffeine, Codeine interactionAcetaminophen, Caffeine, Codeine, SalicylamideCodalan No.1, Codalan No.2, Codalan No.3
How Acetaminophen, Caffeine, Codeine, Salicylamide interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneCytochrome P450 2e1 (cyp2e1) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, diosmin might inhibit the metabolism of CYP2E1 substrates.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Acetaminophen, Caffeine, Codeine, Salicylamide interactionAcetaminophen, Caffeine, DihydrocodeineDHC Plus, Panlor DC, Panlor SS
How Acetaminophen, Caffeine, Dihydrocodeine interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 2e1 (cyp2e1) Substrates Moderate
Interaction Summary
Theoretically, diosmin might inhibit the metabolism of CYP3A4 substrates.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Acetaminophen, Caffeine, Dihydrocodeine interactionAcetaminophen, Caffeine, IsomethepteneMigralam
How Acetaminophen, Caffeine, Isometheptene interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneCytochrome P450 2e1 (cyp2e1) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, diosmin might inhibit the metabolism of CYP2E1 substrates.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Acetaminophen, Caffeine, Isometheptene interactionAcetaminophen, Caffeine, PyrilamineMidol Max Strength Menstrual
How Acetaminophen, Caffeine, Pyrilamine interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 2e1 (cyp2e1) Substrates Moderate
Interaction Summary
Theoretically, diosmin might inhibit the metabolism of CYP3A4 substrates.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Acetaminophen, Caffeine, Pyrilamine interactionAcetaminophen, Chlorpheniramine Maleate, Dextromethorphan HbrVicks Formula 44M Cough, Cold & Flu Relief
How Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 2e1 (cyp2e1) Substrates Moderate
Interaction Summary
Theoretically, diosmin might inhibit the metabolism of CYP3A4 substrates.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interactionAcetaminophen, Chlorpheniramine, Codeine, PhenylephrineColrex
How Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneCytochrome P450 2e1 (cyp2e1) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, diosmin might inhibit the metabolism of CYP2E1 substrates.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interactionAcetaminophen, Chlorpheniramine, DextromethorphanCoricidin II Extra Strength Cold and Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneCytochrome P450 2e1 (cyp2e1) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, diosmin might inhibit the metabolism of CYP2E1 substrates.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Acetaminophen, Chlorpheniramine, Dextromethorphan interactionAcetaminophen, Chlorpheniramine, Dextromethorphan HydrobromideCoricidin HBP Maximum Strength Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 2e1 (cyp2e1) Substrates Moderate
Interaction Summary
Theoretically, diosmin might inhibit the metabolism of CYP3A4 substrates.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interactionAcetaminophen, Chlorpheniramine, Dextromethorphan, PhenylpropanolamineMulti Symptom Cold Relief
How Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 2e1 (cyp2e1) Substrates Moderate
Interaction Summary
Theoretically, diosmin might inhibit the metabolism of CYP3A4 substrates.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interactionAcetaminophen, Chlorpheniramine, Dextromethorphan, PseudoephedrineChildren's Tylenol Cold Plus Cough, Tylenol Cold Ex Strength
How Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneCytochrome P450 2e1 (cyp2e1) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, diosmin might inhibit the metabolism of CYP2E1 substrates.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interactionAcetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, SalicylamideRhinogesic GG
How Acetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, Salicylamide interacts with Propadrol EP — through 1 ingredient. Tap an ingredient for the detail:
3,5,7-trihydroxy-4 MethoxyflavoneCytochrome P450 2e1 (cyp2e1) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, diosmin might inhibit the metabolism of CYP2E1 substrates.
Read the full 3,5,7-trihydroxy-4 Methoxyflavone + Acetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, Salicylamide interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Propadrol EP 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.
3,5,7-Trihydroxy-4 Methoxyflavone
Anticoagulant/Antiplatelet Drugs
Theoretically, diosmin may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
A case of spontaneous intraventricular hemorrhage has been reported for a 77-year-old female after 6 weeks of warfarin therapy, despite an international normalized ratio (INR) of only 1.8. The patient had also been taking aspirin and diosmin for several years. Experts speculate that chronic intake of diosmin predisposed the patient to spontaneous intraventricular hemorrhage by inducing chronic microcirculatory hypertension and inhibiting platelet aggregation. The presence of aspirin was also thought to play a role in this event.
Carbamazepine (Tegretol)
Theoretically, diosmin might reduce the effects of carbamazepine and increase the risk for convulsions.
A pharmacokinetic study in humans shows that taking diosmin (Venex) 500 mg daily for 10 days prior to oral administration of carbamazepine 200 mg increases blood levels of carbamazepine by approximately 58% and decreases carbamazepine clearance by 42%. It also decreases the formation of carbamazepine's active metabolite. It is speculated that diosmin reduces the metabolism of carbamazepine by inhibiting cytochrome P450 3A4 (CYP3A4).
Chlorzoxazone (Parafon Forte, Paraflex)
Theoretically, diosmin might increase the levels and clinical effects of chlorzoxazone.
A pharmacokinetic study in humans shows that taking diosmin (Venex 500) 500 mg daily for 9 days prior to oral administration of chlorzoxazone 250 mg increases blood levels of chlorzoxazone by 53% and decreases chlorzoxazone clearance by 40%. It is speculated that diosmin reduces the metabolism of chlorzoxazone by inhibiting cytochrome P450 2E1 (CYP2E1).
Cytochrome P450 2C9 (Cyp2C9) Substrates
Theoretically, diosmin might inhibit the metabolism of CYP2C9 substrates.
Diclofenac is metabolized by CYP2C9 enzymes. Clinical and laboratory research shows that diosmin inhibits the metabolism of diclofenac. A pharmacokinetic study in humans shows that taking diosmin (Venex 500) 500 mg daily for 9 days prior to oral administration of diclofenac 100 mg increases blood levels of diclofenac and decreases diclofenac clearance.
Cytochrome P450 2E1 (Cyp2E1) Substrates
Theoretically, diosmin might inhibit the metabolism of CYP2E1 substrates.
Chlorzoxazone is metabolized by CYP2E1 enzymes. A pharmacokinetic study in humans shows that taking diosmin (Venex 500) 500 mg daily for 9 days prior to oral administration of chlorzoxazone (Paraflex 250) 250 mg increases blood levels of chlorzoxazone by 34% and decreases chlorzoxazone clearance by 40%. It is speculated that diosmin reduces the metabolism of chlorzoxazone by inhibiting CYP2E1.
Cytochrome P450 3A4 (Cyp3A4) Substrates
Theoretically, diosmin might inhibit the metabolism of CYP3A4 substrates.
Laboratory research is conflicting with respect to the effects of diosmin on CYP3A4. Some research suggests that diosmin does not affect CYP3A4 activity. However, other research suggests that diosmin alters the metabolism of carbamazepine, a CYP3A4 substrate. Laboratory and animal research show that oral administration of diosmin for 7 days prior to oral administration of carbamazepine increases plasma concentrations of carbamazepine, decreases the clearance of carbamazepine, and decreases the formation of carbamazepine's active metabolite. Additionally, pharmacokinetic research in healthy male subjects shows that taking diosmin (Venex) 500 mg daily for 10 days prior to oral administration of carbamazepine 200 mg increases blood levels of carbamazepine by approximately 58% and decreases carbamazepine clearance by 42%. It is speculated that diosmin reduces the metabolism of carbamazepine by inhibiting CYP3A4. Diosmetin, a metabolite of diosmin, may also inhibit CYP3A4.
Diclofenac (Voltaren, Others)
Theoretically, diosmin might increase the levels and clinical effects of diclofenac.
Clinical and laboratory research shows that diosmin inhibits the metabolism of diclofenac. A pharmacokinetic study in humans shows that taking diosmin (Venex 500) 500 mg daily for 9 days prior to oral administration of diclofenac 100 mg increases blood levels of diclofenac and decreases diclofenac clearance. It is speculated that diosmin reduces the metabolism of diclofenac by inhibiting cytochrome P450 2C9 (CYP2C9).
Fexofenadine (Allegra)
Theoretically, diosmin might increase the levels and clinical effects of fexofenadine.
A pharmacokinetic study in humans shows that taking diosmin (Venex) 500 mg daily for 10 days prior to oral administration of fexofenadine 120 mg increases blood levels of fexofenadine by approximately 49% and decreases the apparent oral clearance of fexofenadine by 41%. The time taken to reach maximum plasma concentration, the half-life, and the apparent renal clearance of fexofenadine are not affected. For this reason, it is speculated that diosmin alters the pharmacokinetics of fexofenadine via inhibition of P-glycoprotein in the intestine, but not in the kidney or liver.
P-Glycoprotein Substrates
Theoretically, diosmin might increase levels of drugs that are substrates of P-glycoprotein (P-gp).
Preliminary laboratory research suggests that diosmin inhibits P-gp. Additionally, pharmacokinetic research in healthy male subjects shows that taking diosmin (Venex) 500 mg daily for 10 days prior to oral administration of fexofenadine 120 mg increases blood levels of fexofenadine, a P-gp substrate, by approximately 49% and decreases the apparent oral clearance of fexofenadine by 41%. The time taken to reach maximum plasma concentration, the half-life, and the apparent renal clearance of fexofenadine are not affected. For this reason, it is speculated that diosmin inhibits P-gp in the intestine, but not in the kidney or liver.
7-Methoxy-2-Phenyl-4H-Chromen-One
Aromatase Inhibitors
In vitro evidence shows that 7-methoxyflavone inhibits aromatase. Theoretically, 7-methoxyflavone might have an additive effects when used with other aromatase inhibitors, potentially increasing the therapeutic effects and adverse effects associated with these drugs. Some aromatase inhibitors include anastrozole (Arimidex), exemestane (Aromasin), and letrozole (Femara).
Testosterone
In vitro evidence shows that 7-methoxyflavone inhbits aromatase. Inhibiting aromatase reduces the conversion of testosterone and other androgens to estrogens. Theoretically, use of 7-methoxyflavone with testosterone might increase the effects and side effects of testosterone therapy.
Brand information
Manufacturer and brand details for Propadrol EP, from the product label.
Propadrol EP by EST: Common Questions
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The Full Monographs Behind Propadrol EP’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Diosmin
Interacts with 884 drugsDiosmin is a citrus-derived flavonoid most often used for vein-related problems such as chronic venous insufficiency and hemorrhoids, and it is usually combined with a related flavonoid call...
Read the full Diosmin monograph → Herb & supplement monograph7-methoxyflavone
Interacts with 12 drugs7-Methoxyflavone is a lab-made or plant-derived flavonoid marketed mainly in testosterone-boosting and bodybuilding supplements based on the idea that it blocks the aromatase enzyme. However...
Read the full 7-methoxyflavone monograph →Sources & How We Checked
Propadrol EP'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 21 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.
Diosmin 20 references
- Misra MC, Parshad R. Randomized clinical trial of micronized flavonoids in the early control of bleeding from acute internal haemorrhoids. Br J Surgery 2000;87:868-72. PubMed
- Thanapongsathorn W, Vajrabukka T. Clinical trial of oral diosmin (Daflon) in the treatment of hemorrhoids. Dis Colon Rectum 1992;35:1085-8. PubMed
- Cospite M. Double-blind, placebo-controlled evaluation of clinical activity and safety of Daflon 500 mg in the treatment of acute hemorrhoids. Angiology 1994;45:566-73.
- Guilhou JJ, Dereure O, Marzin L, et al. Efficacy of Daflon 500 mg in venous leg ulcer healing: a double-blind, randomized, controlled versus placebo trial in 107 patients. Angiology 1997;48:77-85.. PubMed
- Cospite, M. and Dominici, A. Double blind study of the pharmacodynamic and clinical activities of 5682 SE in venous insufficiency. Advantages of the new micronized form. Int Angiol. 1989;8(4 Suppl):61-65.
- Buckshee, K., Takkar, D., and Aggarwal, N. Micronized flavonoid therapy in internal hemorrhoids of pregnancy. Int J Gynaecol Obstet 1997;57(2):145-151. PubMed
- Kumar RM, Van Gompel JJ, Bower R, Rabinstein AA. Spontaneous intraventricular hemorrhage associated with prolonged diosmin therapy. Neurocrit Care. 2011 Jun;14(3):438-40. PubMed
- Milano G, Leone S, Fucile C, Zuccoli ML, Stimamiglio A, Martelli A, Mattioli F. Uncommon serum creatine phosphokinase and lactic dehydrogenase increase during diosmin therapy: two case reports. J Med Case Rep. 2014 Jun 16;8:194. PubMed
- Rajnarayana K, Venkatesham A, Krishna DR. Bioavailability of diclofenac sodium after pretreatment with diosmin in healthy volunteers. Drug Metabol Drug Interact. 2007;22(2-3):165-74. PubMed
- Rajnarayana K, Venkatesham A, Nagulu M, Srinivas M, Krishna DR. Influence of diosmin pretreatment on the pharmacokinetics of chlorzoxazone in healthy male volunteers. Drug Metabol Drug Interact. 2008;23(3-4):311-21. PubMed
- Yoo HH, Lee M, Chung HJ, Lee SK, Kim DH. Effects of diosmin, a flavonoid glycoside in citrus fruits, on P-glycoprotein-mediated drug efflux in human intestinal Caco-2 cells. J Agric Food Chem. 2007 Sep 5;55(18):7620-5. PubMed
- Bedada SK, Neerati P. Modulation of CYP3A enzyme activity by diosmin and its consequence on carbamazepine pharmacokinetics in rats. Naunyn Schmiedebergs Arch Pharmacol. 2018;391(2):115-21. PubMed
- Burkina V, Zlabek V, Halsne R, Ropstad E, Zamaratskaia G. In vitro effects of the citrus flavonoids diosmin, naringenin and naringin on the hepatic drug-metabolizing CYP3A enzyme in human, pig, mouse and fish. Biochem Pharmacol. 2016;110-111:109-16 PubMed
- Bedada SK, Boga PK. Influence of diosmin on the metabolism and disposition of carbamazepine in healthy subjects. Xenobiotica. 2017;47(10):879-84. PubMed
- Bedada SK, Boga PK, Kotakonda HK. The effect of diosmin on the pharmacokinetics of fexofenadine in healthy human volunteers. Xenobiotica. 2017;47(3):230-35. PubMed
- Poór M, Boda G, Mohos V, et al. Pharmacokinetic interaction of diosmetin and silibinin with other drugs: Inhibition of CYP2C9-mediated biotransformation and displacement from serum albumin. Biomed Pharmacother. 2018;102:912-921. PubMed
- Gavrilov SG, Karalkin AV, Moskalenko YP, Grishenkova AS. Efficacy of two micronized purified flavonoid fraction dosing regimens in the pelvic venous pain relief. Int Angiol. 2021;40(3):180-186. PubMed
- Steinbruch M, Nunes C, Gama R, et al. Is nonmicronized diosmin 600?mg as effective as micronized diosmin 900?mg plus hesperidin 100?mg on chronic venous disease symptoms? Results of a noninferiority study. Int J Vasc Med. 2020;2020:4237204. PubMed
- Schastlivtsev I, Lobastov K, Barinov V, Kanzafarova I. Diosmin 600 in adjunction to rivaroxaban reduces the risk of post-thrombotic syndrome after femoropopliteal deep vein thrombosis: results of the RIDILOTT DVT study. Int Angiol. 2020;39(5):361-371. PubMed
- Mansilha A, Caldevilla H, Puskás A, Lucien A, Roby L, Kirienko A. MPFF 1000 mg chewable once daily vs. MPFF 500 mg twice daily in chronic venous disease: the double-blind, randomized, non-inferiority CHEWY trial. Int Angiol 2022;41(6):464-475. PubMed
7-methoxyflavone 1 reference
- Ta N, Walle T. Aromatase inhibition by bioavailable flavones. J Steroid Biochem Mol Biol 2007;107(1-2):127-9.
Parts of this content are provided by the Therapeutic Research Center, LLC.
DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.
© 2021 Therapeutic Research Center, LLC