N-Acetyl L-Tyrosine 300 mg Ingredients & Drug Interactions
by Source Naturals
What is this page for?
First and foremost: checking N-Acetyl L-Tyrosine 300 mg against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.
Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy
N-Acetyl L-Tyrosine 300 mg is a dietary supplement by Source Naturals with 3 active ingredients. Its ingredients are commonly taken for morning sickness in pregnancy, premenstrual syndrome (pms), preventing or treating b6 deficiency.Based on those ingredients, 210 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Vitamin B6. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against N-Acetyl L-Tyrosine 300 mg by Source Naturals
Ask about any prescription or over-the-counter medication and we check it for interactions with N-Acetyl L-Tyrosine 300 mg by Source Naturals — 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 N-Acetyl L-Tyrosine 300 mg by Source Naturals
Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.
What’s inside
Full disclosure
This product has 3 active ingredients. The main one is N-Acetyl L-Tyrosine, a form of the amino acid tyrosine.
It also contains vitamin B6 (pyridoxine) and folate, both B vitamins. The tablet or pill also includes several inactive ingredients — sorbitol, stearic acid, magnesium stearate, modified cellulose gum, and colloidal silicon dioxide — which help hold the tablet together and aid absorption.
Does it work?
Not established
Evidence is established in our data only for vitamin B6, one of the three active ingredients. Vitamin B6 is effective for sideroblastic anemia and B6 deficiency, likely effective for high homocysteine (a blood marker linked to heart risk), and possibly effective for pregnancy-related nausea and vomiting.
The effectiveness of N-Acetyl L-Tyrosine and folate for specific uses is not established in the data we hold.
How safe is it?
Well-documented data
Vitamin B6 is well tolerated at doses under 100 mg daily. At higher doses over time, it can damage nerves (sensory neuropathy); the risk is highest above 1,000 mg daily or with cumulative doses of 1,000 grams or more, though nerve damage can occur at lower amounts.
Common side effects at any dose include headache, nausea, heartburn, and stomach pain. In pregnancy, vitamin B6 is rated likely safe at normal levels but possibly unsafe at higher doses — use only under a doctor's guidance, especially for morning sickness.
During lactation, it is rated likely safe. We hold no safety data on file for N-Acetyl L-Tyrosine or folate in this product.
Meds to double-check
Moderate interaction found
Before taking this product, double-check with your doctor or pharmacist if you take seizure medications (phenobarbital or phenytoin), blood pressure medications, amiodarone (a heart rhythm drug), or levodopa for Parkinson's disease taken without carbidopa. These are the medication types where vitamin B6 in this product has documented interactions.
The bottom line
Scorecard at a glanceFully disclosed formula with no established evidence rating for its marketed use. Moderate medication interactions have been identified, and safety information is well characterized.
This product may be worth considering if you're interested in amino acid and B-vitamin support, but it's not the right choice if you take seizure medications, certain heart drugs, or blood pressure medications without first checking with your doctor or pharmacist. Because vitamin B6 can interact with multiple medication types, review your exact prescriptions before starting.
Talk it over 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: 1 of 3 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Aug 23, 2023.
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 N-Acetyl L-Tyrosine 300 mg, straight from the product label.
| Brand | Source Naturals |
|---|---|
| Barcode (UPC) | 021078009306 |
| Net contents | 30 Tablet(s) |
| Market status | On market |
| Date entered into DSLD | Aug 23, 2023 |
| DSLD ID | 296098 |
| Product type | Other Combinations |
| Supplement form | Tablet Or Pill |
| Dietary claims / uses | Nutrient, All Other, Structure/Function |
| Intended target group(s) | 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 N-Acetyl L-Tyrosine 300 mg by Source Naturals, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Vitamin B6 | 25 mg | 1250% |
| N-Acetyl L-Tyrosine | 300 mg | -- |
| Folate | 400 mcg | 100% |
Other ingredients: Sorbitol, Stearic Acid, Magnesium Stearate, modified Cellulose Gum, Colloidal Silicon Dioxide
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
Formula
N-acetyl L-tyrosine is a more rapidly absorbed and bioavailable form of the amino acid L-tyrosine, and is less prone to urinary excretion. L-Tyrosine is converted in the body to key biological compounds, including epinephrine, dopamine, L-dopa, CoQ10, thyroid hormones, and melanin. The B vitamins pyridoxine (B-6) and folic acid are provided to assist in the conversion process.
Suggested/Recommended/Usage/Directions
Suggested use: 1 tablet daily.
Precautions
Warning: Contains tyrosine. Not to be used with MAO inhibitor drugs. If you are pregnant, may become pregnant, or breastfeeding, consult your health care professional before using this product.
Do not use if either tamper-evident seal is broken or missing.
Keep out of the reach of children.
Formulation
Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.
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.
Brand IP Statement(s)
Copyright Source Naturals, Inc.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
N-Acetyl L-Tyrosine 300 mg by Source Naturals 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 N-Acetyl L-Tyrosine 300 mg by Source Naturals
These are the 3 active ingredients this product is made of. Select any to open its full monograph.
Serving size1 Tablet(s) Dosage formTablet Or Pill 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.
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...
Vitamin B6 monograph & interactionsN-Acetyl L-Tyrosine
Folate
Other (inactive) ingredients: Sorbitol, Stearic Acid, Magnesium Stearate, Modified Cellulose Gum, Colloidal Silicon Dioxide. These complete the product’s ingredient list but are not active constituents.
N-Acetyl L-Tyrosine 300 mg by Source Naturals Drug Interactions
HelloPharmacist Interaction Report
Source Naturals N-Acetyl L-Tyrosine 300 mg can interact with medications through its vitamin B6 content.
The most serious concern is with seizure medications: high doses of vitamin B6 may reduce how well phenobarbital and phenytoin work by speeding up how your body breaks them down, potentially lowering their effectiveness.
Read the full breakdown — every affected drug type, severity by severity
Vitamin B6 also has moderate interactions with blood pressure medications — it may add to their blood-pressure-lowering effect — and with amiodarone, a heart rhythm drug, where it might increase sun sensitivity. If you take levodopa (Parkinson's medication) alone without carbidopa, vitamin B6 can reduce its effect, though this doesn't happen when you take levodopa with carbidopa (Sinemet).
N-Acetyl L-Tyrosine and folate in this product have not been checked against medication interactions, as we hold no data for them. Altogether, these interactions span 210 individual medications.
Use the medication checker below with your exact drugs before you start, and talk with your doctor or pharmacist if you take any seizure medication, heart drug, blood pressure medication, or Parkinson's treatment.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against N-Acetyl L-Tyrosine 300 mg?
Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.
Go to the checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in N-Acetyl L-Tyrosine 300 mg interact with 210 drugs. Click any drug to see the details.
1 of the 3 ingredients in N-Acetyl L-Tyrosine 300 mg interact with drugs. Each result below shows which ingredient is responsible. Vitamin B6
AcebutololRhotral, Sectral
How Acebutolol interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Acebutolol interactionAcetazolamideAk-Zol, Diamox
How Acetazolamide interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Acetazolamide interactionAliskirenTekturna
How Aliskiren interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Aliskiren interactionAmbrisentanLetairis, Volibris
How Ambrisentan interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Ambrisentan interactionAmilorideAmilamont, Midamor
How Amiloride interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Amiloride interactionAmiloride, HydrochlorothiazideAmil-Co, Amilzide, Moduret 25, Moduretic
How Amiloride, Hydrochlorothiazide interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Amiloride, Hydrochlorothiazide interactionAmiodaroneCordarone, Pacerone
How Amiodarone interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Amiodarone (cordarone) Moderate
Interaction Summary
Theoretically, vitamin B6 might increase the photosensitivity caused by amiodarone.
Read the full Vitamin B6 + Amiodarone interactionAmlodipineNorliqva
How Amlodipine interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Amlodipine interactionAmlodipine BenzoateKaterzia
How Amlodipine Benzoate interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Amlodipine Benzoate interactionAmlodipine BesilateIstin
How Amlodipine Besilate interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Amlodipine Besilate interactionAmlodipine BesylateNorvasc
How Amlodipine Besylate interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Amlodipine Besylate interactionAmlodipine Besylate, BenazeprilLotrel
How Amlodipine Besylate, Benazepril interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Amlodipine Besylate, Benazepril interactionAmlodipine, CelecoxibConsensi
How Amlodipine, Celecoxib interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Amlodipine, Celecoxib interactionAmmonium ChlorideAmmonium Chloride
How Ammonium Chloride interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Ammonium Chloride interactionAprobarbital, Butabarbital, PhenobarbitalTriple Barbital
How Aprobarbital, Butabarbital, Phenobarbital interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Aprobarbital, Butabarbital, Phenobarbital interactionAprocitentanTryvio
How Aprocitentan interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Aprocitentan interactionAspirin, Codeine Phosphate, PhenobarbitalPhenaphen
How Aspirin, Codeine Phosphate, Phenobarbital interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Aspirin, Codeine Phosphate, Phenobarbital interactionAtenololAtenix, Tenormin
How Atenolol interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Atenolol interactionAtenolol, ChlortalidoneAtenixCo, Tenoret 50, Totaretic
How Atenolol, Chlortalidone interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Atenolol, Chlortalidone interactionAtenolol, ChlorthalidoneTenoretic
How Atenolol, Chlorthalidone interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Atenolol, Chlorthalidone interactionAtropine, Hyoscyamine, PhenobarbitalHypnaldyne
How Atropine, Hyoscyamine, Phenobarbital interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Atropine, Hyoscyamine, Phenobarbital interactionAtropine, Hyoscyamine, Phenobarbital, ScopolamineBarbidonna No. 2, Belladonna Phenobarbital
How Atropine, Hyoscyamine, Phenobarbital, Scopolamine interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Atropine, Hyoscyamine, Phenobarbital, Scopolamine interactionAtropine, Hyoscyamine, Scopolamine, PhenobarbitalBarbeloid, Donnatal #2, Donphen
How Atropine, Hyoscyamine, Scopolamine, Phenobarbital interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Atropine, Hyoscyamine, Scopolamine, Phenobarbital interactionAtropine, PhenobarbitalAnthrocol
How Atropine, Phenobarbital interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Atropine, Phenobarbital interactionAzilsartanEdarbi
How Azilsartan interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Azilsartan interactionAzilsartan, ChlorthalidoneEdarbyclor
How Azilsartan, Chlorthalidone interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Azilsartan, Chlorthalidone interactionBelladona Extract, PhenobarbitalChardonna-2
How Belladona Extract, Phenobarbital interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full 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 N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Belladonna Alkaloids, Ergotamine Tartrate, Phenobarbital interactionBelladonna Alkaloids, PhenobarbitalBarbidonna, Donnatal
How Belladonna Alkaloids, Phenobarbital interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Belladonna Alkaloids, Phenobarbital interactionBelladonna Extract, PhenobarbitalBelap
How Belladonna Extract, Phenobarbital interacts with N-Acetyl L-Tyrosine 300 mg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Belladonna Extract, Phenobarbital interactionEach ingredient & the kinds of drugs it affects
For each ingredient in N-Acetyl L-Tyrosine 300 mg with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.
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.
Brand information
Manufacturer and brand details for N-Acetyl L-Tyrosine 300 mg, from the product label.
Source Naturals
- Name
- Source Naturals, Inc.
- Street Address
- P. O. Box 2118
- City
- Santa Cruz
- State
- CA
- ZipCode
- 95062
- Web Address
- www.sourcenaturals.com
N-Acetyl L-Tyrosine 300 mg by Source Naturals: Common Questions
Does N-Acetyl L-Tyrosine 300 mg by Source Naturals interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Can I take this during pregnancy?
Is this safe to take long-term?
What does N-Acetyl L-Tyrosine do?
Can I breastfeed while taking this?
What are the side effects of vitamin B6 at normal doses?
Does this product have any fillers?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if N-Acetyl L-Tyrosine 300 mg 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 N-Acetyl L-Tyrosine 300 mg’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
N-Acetyl L-Tyrosine 300 mg's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.
The 32 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.
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