EndorphiGen Ingredients & Drug Interactions
by Lidtke
What is this page for?
First and foremost: checking EndorphiGen 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
EndorphiGen is a dietary supplement by Lidtke with 3 active ingredients. Its ingredients are commonly taken for riboflavin deficiency, migraine prevention, general energy and metabolism support.Based on those ingredients, 230 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Coenzyme Vitamin B6, Vitamin B2. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against EndorphiGen by Lidtke
Ask about any prescription or over-the-counter medication and we check it for interactions with EndorphiGen by Lidtke — 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
Ask the Pharmacist
A licensed pharmacist will answer your question by email — free, usually within 24 hours.
Got it — thank you!
A licensed pharmacist will answer within 24 hours. Keep an eye on your email (worth checking spam, just in case).
HelloPharmacist Scorecard of EndorphiGen by Lidtke
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
EndorphiGen contains 3 active ingredients. Pyridoxal 5-phosphate is a form of vitamin B6, an essential nutrient involved in nerve function and metabolism.
Vitamin B2 (riboflavin) is another B vitamin that supports energy production and cellular health. The third ingredient is D-phenylalanine, an amino acid.
The capsule itself is made from plant-based material, and arrowroot is used as an inactive filler.
Does it work?
Couldn't assess
The evidence we have applies to pyridoxal 5-phosphate (vitamin B6). It's effective for sideroblastic anemia and vitamin B6 deficiency, likely effective for lowering homocysteine (a blood marker), and possibly effective for pregnancy-related nausea and vomiting.
We hold no effectiveness data for vitamin B2 or D-phenylalanine in the context of this product's intended use.
How safe is it?
Well-documented data
Vitamin B6 is well tolerated at doses under 100 mg daily orally, with mild side effects like nausea, headache, and heartburn reported occasionally. High doses over time can cause nerve damage (sensory neuropathy), especially above 1,000 mg daily or when total lifetime doses exceed 1,000 grams — though it can occur at lower amounts too.
Riboflavin is very safe overall and is excreted in excess through urine; at high doses it may cause nausea and bright yellow urine. For pregnancy, vitamin B6 carries mixed data — it's rated Likely Safe in some contexts and Possibly Unsafe in others, so discuss use with your doctor or midwife if you're pregnant or planning to be.
Both vitamin B6 and B2 are considered appropriate during breastfeeding at recommended levels. We have no pregnancy or breastfeeding safety data on file for D-phenylalanine.
Meds to double-check
Moderate interaction found
Before taking EndorphiGen, check with your doctor or pharmacist if you take antihypertensive drugs (blood pressure medications), amiodarone or other heart rhythm drugs, phenobarbital or phenytoin (seizure medications), levodopa for Parkinson's disease, or tetracycline antibiotics. No interactions are documented for D-phenylalanine, as we hold no data for that ingredient.
The bottom line
Scorecard at a glanceFully disclosed formula with no assessable stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.
EndorphiGen may be worth considering if you're interested in B-vitamin support, but it's important to check your current medications first — particularly if you take blood pressure drugs, seizure medications, heart rhythm drugs, or tetracycline antibiotics. If you're pregnant or breastfeeding, talk with your doctor or pharmacist before starting, especially regarding vitamin B6.
Discuss this product with your own healthcare provider to make sure it fits your situation.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 2 of 3 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated 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 EndorphiGen, straight from the product label.
| Brand | Lidtke |
|---|---|
| Barcode (UPC) | 630610003902 |
| Net contents | 180 Vegan Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Dec 18, 2021 |
| DSLD ID | 257194 |
| Product type | Other Combinations |
| Supplement form | Capsule |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Vegetarian, Adult (18 - 50 Years), Gluten Free, Dairy Free, Sugar Free |
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.
Supplement Facts
The label details for EndorphiGen by Lidtke, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Pyridoxal 5-Phosphate | 3.5 mg | -- |
| Vitamin B2 | 2 mg | 115% |
| D-Phenylalanine | 500 mg | -- |
| Coenzyme Vitamin B6 | 2 mg | 100% |
Other ingredients: Arrowroot, vegan Capsule
Tap any ingredient to jump to its full detail below.
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
General Statements
Thank you for choosing EndorphiGen by Lidtke. We sincerely wish the best of health for you and your family.
Lidtke stands behind each product and guarantees customer satisfaction for 365 days from the date of purchase.
Formulation
Research shows stress and pain, such as muscle pain following exercise, often cause the release of endorphins. Lidtke EndorphiGen is designed to help your body maintain these healthy levels. Natural Endorphins: Ease minor pain Promote cardiovascular health Promote a cheerful mood
Superb quality since 1994
Maintain healthy endorphin levels to ease minor pain Such as minor pain from exercise
Purest on the planet
No added gluten, yeast, wheat, soy, milk, eggs, nuts, fish, shellfish, sugar, preservatives, artificial color or flavor, or other common allergens. Non-GMO.
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.
Precautions
Caution: Keep out of reach of children.
If you are pregnant, lactating, taking any medications, or have a medical condition, consult your doctor.
Discontinue use if adverse reaction occurs. Do not use if seal is damaged or missing.
For children, consult your doctor.
No added gluten, yeast, wheat, soy, milk, eggs, nuts, fish, shellfish, sugar, preservatives, artificial color or flavor, or other common allergens.
Adverse events may be reported above.
Storage
Keep lid tightly closed. Keep in a cool, dry place.
FDA Statement of Identity
A Dietary Supplement
Suggested/Recommended/Usage/Directions
Directions (Adults): Take one (1) capsule three times daily on an empty stomach or as directed by your doctor. For increased support, take one (1) capsule six times daily or as directed by your doctor.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
EndorphiGen by Lidtke 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 EndorphiGen by Lidtke
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 container180 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.
Vitamin B2
Interacts with20 drugs
Riboflavin (vitamin B2) is an essential nutrient your body needs to turn food into energy and to keep skin, eyes, and nerves healthy. It is generally...
Vitamin B2 monograph & interactionsD-Phenylalanine
Coenzyme Vitamin B6
Interacts with210 drugs
Vitamin B6 (pyridoxine) is an essential water-soluble vitamin that your body needs for metabolism, brain function, and making red blood cells. It is b...
Coenzyme Vitamin B6 monograph & interactionsOther (inactive) ingredients: Arrowroot, Vegan Capsule. These complete the product’s ingredient list but are not active constituents.
EndorphiGen by Lidtke Drug Interactions
HelloPharmacist Interaction Report
EndorphiGen by Lidtke contains pyridoxal 5-phosphate (a form of vitamin B6) and riboflavin, both of which have documented interactions with medications.
The most serious concern is vitamin B6's Moderate interaction with antihypertensive drugs — it may add to their blood-pressure-lowering effect, potentially causing your pressure to drop too far.
Read the full breakdown — every affected drug type, severity by severity
Vitamin B6 also interacts Moderately with amiodarone (a heart rhythm medication), where it may worsen light sensitivity; with phenobarbital and phenytoin (seizure medications), where high doses may reduce their effectiveness; and with levodopa (Parkinson's medication), though this doesn't occur if you're taking it with carbidopa. Riboflavin carries a Moderate interaction with tetracycline antibiotics, where it may theoretically reduce their potency, though this hasn't been confirmed in humans.
We couldn't check D-phenylalanine — no data is on file for it. Altogether, these interactions span 230 individual medications.
Use the search tool on this page to look up any specific drugs you take before starting EndorphiGen.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against EndorphiGen?
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 EndorphiGen interact with 230 drugs. Click any drug to see the details.
2 of the 3 ingredients in EndorphiGen interact with drugs. Each result below shows which ingredient is responsible. Coenzyme Vitamin B6 Vitamin B2
AcebutololRhotral, Sectral
How Acebutolol interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Coenzyme Vitamin B6 + Acebutolol interactionAcetazolamideAk-Zol, Diamox
How Acetazolamide interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Coenzyme Vitamin B6 + Acetazolamide interactionAliskirenTekturna
How Aliskiren interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Coenzyme Vitamin B6 + Aliskiren interactionAmbrisentanLetairis, Volibris
How Ambrisentan interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Coenzyme Vitamin B6 + Ambrisentan interactionAmilorideAmilamont, Midamor
How Amiloride interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Coenzyme Vitamin B6 + Amiloride interactionAmiloride, HydrochlorothiazideAmil-Co, Amilzide, Moduret 25, Moduretic
How Amiloride, Hydrochlorothiazide interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Coenzyme Vitamin B6 + Amiloride, Hydrochlorothiazide interactionAmiodaroneCordarone, Pacerone
How Amiodarone interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Amiodarone (cordarone) Moderate
Interaction Summary
Theoretically, vitamin B6 might increase the photosensitivity caused by amiodarone.
Read the full Coenzyme Vitamin B6 + Amiodarone interactionAmlodipineNorliqva
How Amlodipine interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Coenzyme Vitamin B6 + Amlodipine interactionAmlodipine BenzoateKaterzia
How Amlodipine Benzoate interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Coenzyme Vitamin B6 + Amlodipine Benzoate interactionAmlodipine BesilateIstin
How Amlodipine Besilate interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Coenzyme Vitamin B6 + Amlodipine Besilate interactionAmlodipine BesylateNorvasc
How Amlodipine Besylate interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Coenzyme Vitamin B6 + Amlodipine Besylate interactionAmlodipine Besylate, BenazeprilLotrel
How Amlodipine Besylate, Benazepril interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Coenzyme Vitamin B6 + Amlodipine Besylate, Benazepril interactionAmlodipine, CelecoxibConsensi
How Amlodipine, Celecoxib interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Coenzyme Vitamin B6 + Amlodipine, Celecoxib interactionAmmonium ChlorideAmmonium Chloride
How Ammonium Chloride interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Coenzyme Vitamin B6 + Ammonium Chloride interactionAmphotericin, TetracyclineMysteclin-F
How Amphotericin, Tetracycline interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B2Tetracycline Antibiotics Moderate
Interaction Summary
Theoretically, taking riboflavin with tetracycline antibiotics may decrease the potency of these antibiotics.
Read the full Vitamin B2 + Amphotericin, Tetracycline interactionAprobarbital, Butabarbital, PhenobarbitalTriple Barbital
How Aprobarbital, Butabarbital, Phenobarbital interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Coenzyme Vitamin B6 + Aprobarbital, Butabarbital, Phenobarbital interactionAprocitentanTryvio
How Aprocitentan interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Coenzyme Vitamin B6 + Aprocitentan interactionAspirin, Codeine Phosphate, PhenobarbitalPhenaphen
How Aspirin, Codeine Phosphate, Phenobarbital interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Coenzyme Vitamin B6 + Aspirin, Codeine Phosphate, Phenobarbital interactionAtenololAtenix, Tenormin
How Atenolol interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Coenzyme Vitamin B6 + Atenolol interactionAtenolol, ChlortalidoneAtenixCo, Tenoret 50, Totaretic
How Atenolol, Chlortalidone interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Coenzyme Vitamin B6 + Atenolol, Chlortalidone interactionAtenolol, ChlorthalidoneTenoretic
How Atenolol, Chlorthalidone interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Coenzyme Vitamin B6 + Atenolol, Chlorthalidone interactionAtropine, Hyoscyamine, PhenobarbitalHypnaldyne
How Atropine, Hyoscyamine, Phenobarbital interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Coenzyme Vitamin B6 + Atropine, Hyoscyamine, Phenobarbital interactionAtropine, Hyoscyamine, Phenobarbital, ScopolamineBarbidonna No. 2, Belladonna Phenobarbital
How Atropine, Hyoscyamine, Phenobarbital, Scopolamine interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Coenzyme Vitamin B6 + Atropine, Hyoscyamine, Phenobarbital, Scopolamine interactionAtropine, Hyoscyamine, Scopolamine, PhenobarbitalBarbeloid, Donnatal #2, Donphen
How Atropine, Hyoscyamine, Scopolamine, Phenobarbital interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Coenzyme Vitamin B6 + Atropine, Hyoscyamine, Scopolamine, Phenobarbital interactionAtropine, PhenobarbitalAnthrocol
How Atropine, Phenobarbital interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Coenzyme Vitamin B6 + Atropine, Phenobarbital interactionAzilsartanEdarbi
How Azilsartan interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Coenzyme Vitamin B6 + Azilsartan interactionAzilsartan, ChlorthalidoneEdarbyclor
How Azilsartan, Chlorthalidone interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Coenzyme Vitamin B6 + Azilsartan, Chlorthalidone interactionBelladona Extract, PhenobarbitalChardonna-2
How Belladona Extract, Phenobarbital interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Coenzyme Vitamin B6 + Belladona Extract, Phenobarbital interactionBelladonna Alkaloids, Ergotamine Tartrate, PhenobarbitalBel Tabs, Bellamine-S, Bellaphen-S, Duragal S, Phenarbal S, Spastrin
How Belladonna Alkaloids, Ergotamine Tartrate, Phenobarbital interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Coenzyme Vitamin B6 + Belladonna Alkaloids, Ergotamine Tartrate, Phenobarbital interactionBelladonna Alkaloids, PhenobarbitalBarbidonna, Donnatal
How Belladonna Alkaloids, Phenobarbital interacts with EndorphiGen — through 1 ingredient. Tap an ingredient for the detail:
Coenzyme Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Coenzyme Vitamin B6 + Belladonna Alkaloids, Phenobarbital interactionEach ingredient & the kinds of drugs it affects
For each ingredient in EndorphiGen 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.
Coenzyme Vitamin B6
Amiodarone (Cordarone)
Theoretically, vitamin B6 might increase the photosensitivity caused by amiodarone.
Despite initial case reports suggesting that pyridoxine may have a protective effect against amiodarone-induced photosensitivity, preliminary clinical research suggests that pyridoxine may actually exacerbate this adverse effect.
Antihypertensive Drugs
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Research in hypertensive rats shows that vitamin B6 can decrease systolic blood pressure. Similarly, clinical research in patients with hypertension shows that taking high doses of vitamin B6 may reduce systolic and diastolic blood pressure, possibly by reducing plasma levels of epinephrine and norepinephrine.
Phenobarbital (Luminal)
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Preliminary clinical evidence suggests that vitamin B6 200 mg daily can reduce plasma levels of phenobarbital, possibly by increasing metabolism. It is not known whether lower doses have any effect. Advise people taking phenobarbital to avoid high doses of vitamin B6.
Phenytoin (Dilantin)
High doses of vitamin B6 may reduce the levels and clinical effects of phenytoin.
Preliminary clinical evidence suggests that vitamin B6 200 mg daily can reduce plasma levels of phenytoin, possibly by increasing metabolism. It is not known whether lower doses have any effect. Advise people taking phenytoin to avoid high doses of vitamin B6.
Levodopa
Vitamin B6 may increase the metabolism of levodopa when taken alone, but not when taken in conjunction with carbidopa.
Vitamin B6 (pyridoxine) enhances the metabolism of levodopa, reducing its clinical effects. However, this interaction does not occur when carbidopa is used concurrently with levodopa (Sinemet). Therefore, it is not likely to be a problem in most people.
Vitamin B2
Tetracycline Antibiotics
Theoretically, taking riboflavin with tetracycline antibiotics may decrease the potency of these antibiotics.
In vitro research suggests that riboflavin may inhibit the potency of tetracycline antibiotics. It is not clear if this effect is clinically significant, as this interaction has not been reported in humans.
Brand information
Manufacturer and brand details for EndorphiGen, from the product label.
Lidtke
See all Lidtke products- Name
- Lidtke
- City
- Chandler
- State
- AZ
- ZipCode
- 85226
- Phone Number
- 1-800-404-8185
- Web Address
- www.lidtke.com
EndorphiGen by Lidtke: Common Questions
Does EndorphiGen by Lidtke interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Is EndorphiGen safe to take if I'm pregnant?
Can I take EndorphiGen if I'm breastfeeding?
What does vitamin B6 actually do in this product?
Will high doses of EndorphiGen cause nerve damage?
What are the most common side effects I might notice?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if EndorphiGen is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.
The Full Monographs Behind EndorphiGen’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Riboflavin
Interacts with 20 drugsRiboflavin (vitamin B2) is an essential nutrient your body needs to turn food into energy and to keep skin, eyes, and nerves healthy. It is generally very safe at typical doses, and the stro...
Read the full Riboflavin monograph → Herb & supplement monographVitamin B6
Interacts with 210 drugsVitamin B6 (pyridoxine) is an essential water-soluble vitamin that your body needs for metabolism, brain function, and making red blood cells. It is best known for helping with pregnancy-rel...
Read the full Vitamin B6 monograph →Sources & How We Checked
EndorphiGen'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 37 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.
Vitamin B6 32 references
- Hansten PD, Horn JR. Drug Interactions Analysis and Management. Vancouver, WA: Applied Therapeutics Inc., 1997 and updates.
- Yates AA, Schlicker SA, Suitor CW. Dietary reference intakes: The new basis for recommendations for calcium and related nutrients, B vitamins, and choline. J Am Diet Assoc 1998;98:699-706. PubMed
- Geerling BJ, Dagnelie PC, Badart-Smook A, et al. Diet as a risk factor for the development of ulcerative colitis. Am J Gastroenterol 2000;95:1008-13. PubMed
- South M. Neonatal seizures after pyridoxine use -- reply. Lancet 1999;354:2083. PubMed
- Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline (2000). Washington, DC: National Academy Press, 2000. Available at: http://b
- Baxter P, Aicardi J. Neonatal seizures after pyridoxine use. Lancet 1999;354:2082-3. PubMed
- Bendich A, Cohen M. Vitamin B6 safety issues. Ann N Y Acad Sci 1990;585:321-30.
- Schaumburg H, Kaplan J, Windebank A. Sensory neuropathy from pyridoxine abuse. A new megavitamin syndrome. N Engl J Med 1983;309:445-8. PubMed
- Gordon N. Pyridoxine dependency: an update. Dev Med Child Neurol 1997;39:63-5. PubMed
- Lewis PJ. Pain in the hand and wrist. Pyridoxine supplements may help patients with carpal tunnel syndrome. BMJ 1995;310:1534. PubMed
- Kaufman G. Pyridoxine against amiodarone-induced photosensitivity (letter). Lancet 1984;1:51-2. PubMed
- Mulrow JP, Mulrow CD, McKenna WJ. Pyridoxine and amiodarone-induced photosensitivity. Ann Intern Med 1985;103:68-9. PubMed
- Kawada A, Kashima A, Shiraishi H, et al. Pyridoxine-induced photosensitivity and hypophosphatasia. Dermatology 2000;201:356-60.. PubMed
- Vasile A, Goldberg R, Kornberg B. Pyridoxine toxicity: report of a case. J Am Osteopath Assoc 1984;83:790-1. DOI
- Hansson O, Sillanpaa M. Pyridoxine and serum concentration of phenytoin and phenobarbitone. Lancet 1976;1:256. DOI
- Jansen T, Romiti R, Kreuter A, Altmeyer P. Rosacea fulminans triggered by high-dose vitamins B6 and B12. J Eur Acad Dermatol Venereol 2001;15:484-5..
- Chittumma P, Kaewkiattikun K, Wiriyasiriwach B. Comparison of the effectiveness of ginger and vitamin B6 for treatment of nausea and vomiting in early pregnancy: a randomized double-blind controlled trial. J Med Assoc Thai 2007;90:15-20.
- Hatzitolios, A., Iliadis, F., Katsiki, N., and Baltatzi, M. Is the anti-hypertensive effect of dietary supplements via aldehydes reduction evidence based? A systematic review. Clin Exp.Hypertens. 2008;30(7):628-639. PubMed
- Vasdev, S., Ford, C. A., Parai, S., Longerich, L., and Gadag, V. Dietary vitamin B6 supplementation attenuates hypertension in spontaneously hypertensive rats. Mol.Cell Biochem. 1999;200(1-2):155-162.
- de, Vogel S., Dindore, V., van, Engeland M., Goldbohm, R. A., van den Brandt, P. A., and Weijenberg, M. P. Dietary folate, methionine, riboflavin, and vitamin B-6 and risk of sporadic colorectal cancer. J Nutr 2008;138(12):2372-2378. PubMed
- Hagen, I., Nesheim, B. I., and Tuntland, T. No effect of vitamin B-6 against premenstrual tension. A controlled clinical study. Acta Obstet.Gynecol.Scand. 1985;64(8):667-670. PubMed
- Aybak, M., Sermet, A., Ayyildiz, M. O., and Karakilcik, A. Z. Effect of oral pyridoxine hydrochloride supplementation on arterial blood pressure in patients with essential hypertension. Arzneimittelforschung. 1995;45(12):1271-1273.
- Lal, K. J., Dakshinamurti, K., and Thliveris, J. The effect of vitamin B6 on the systolic blood pressure of rats in various animal models of hypertension. J Hypertens. 1996;14(3):355-363. PubMed
- Lauritzen CH, Reuter HD, Repges R, Bohnert K, and Schmidt U. Treatment of premenstrual tension syndrome with Vitex agnus castus. Controlled, double-blind study versus pyridoxine. Phytomed 1997;4(3):183-189. PubMed
- Fonseca VA, Lavery LA, Thethi TK, et al. Metanx in type 2 diabetes with peripheral neuropathy: A randomized trial. Am J Med 2013;126(2):141-9. PubMed
- Hankey GJ, Eikelboom JW, Yi Q, et al. Treatment with B vitamins and incidence of cancer in patients with previous stroke or transient ischemic attack: Results of a randomized placebo-controlled trial. Stroke 2012;43(6):1572-7. PubMed
- Hoyer-Kuhn H, Kohbrok S, Volland R, Franklin J, Hero B, Beck BB, Hoppe B. Vitamin B6 in primary hyperoxaluria I: first prospective trial after 40 years of practice. Clin J Am Soc Nephrol. 2014 Mar;9(3):468-77. PubMed
- Mahmoud A, Tabassum S, Al Enazi S, et al. Amelioration of levetiracetam-induced behavioral side effects by pyridoxine. A randomized double blind controlled study. Pediatr Neurol 2021;119:15-21. PubMed
- Gupta M, Gallante B, Bamberger JN, et al. Prospective randomized evaluation of idiopathic hyperoxaluria treatments. J Endourol 2021;35(12):1844-1851. PubMed
- Li H, Chen M, Liang S, et al. Excessive vitamin B6 during treatment is related to poor prognosis of patients with nasopharyngeal carcinoma: A U-shaped distribution suggests low dose supplement. Clin Nutr 2021;40(4):2293-2300. PubMed
- Tanigawa J, Nabatame S, Tominaga K, et al. High-dose pyridoxine treatment for inherited glycosylphosphatidylinositol deficiency. Brain Dev 2021;43(6):680-687. PubMed
- Committee on Practice Bulletins-Obstetrics. ACOG Practice Bulletin No. 189: Nausea And Vomiting Of Pregnancy. Obstet Gynecol. 2018;131(1):e15-e30. PubMed
Riboflavin 5 references
- Schoenen J, Jacquy J, Lenaerts M. Effectiveness of high-dose riboflavin in migraine prophylaxis. A randomized controlled trial. Neurology 1998;50:466-70. PubMed
- Yates AA, Schlicker SA, Suitor CW. Dietary reference intakes: The new basis for recommendations for calcium and related nutrients, B vitamins, and choline. J Am Diet Assoc 1998;98:699-706. PubMed
- Leeson LJ, Weidenheimer JF. Stability of tetracycline and riboflavin. J Pharm Sci. 1969;58(3):355-7. PubMed
- MacLennan, S. C., Wade, F. M., Forrest, K. M., Ratanayake, P. D., Fagan, E., and Antony, J. High-dose riboflavin for migraine prophylaxis in children: a double-blind, randomized, placebo-controlled trial. J Child Neurol. 2008;23(11):1300-1304.
- Dietary reference intakes (DRIs): estimated average requirements. Food and Nutrition Board, Institute of Medicine, National Academics. https://www.nal.usda.gov/sites/default/files/fnic_uploads//recommended_intakes_individuals.pdf Accessed July 24, 2017.
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