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Dietary supplement

L-Tyrosine Powder Ingredients & Drug Interactions

by Nootropics Depot

L-Tyrosine Powder label
See full label image
Powder Category: Amino Acid/protein
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking L-Tyrosine Powder 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

The interaction bottom line Most serious interaction: Moderate

L-Tyrosine Powder is a dietary supplement by Nootropics Depot with 1 active ingredient. Its ingredients are commonly taken for mental focus and alertness, coping with stress, fatigue and sleep loss.Based on those ingredients, 21 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are L-Tyrosine. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against L-Tyrosine Powder by Nootropics Depot

Ask about any prescription or over-the-counter medication and we check it for interactions with L-Tyrosine Powder by Nootropics Depot — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of L-Tyrosine Powder by Nootropics Depot

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.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Aug 13, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

This powder contains one active ingredient: L-tyrosine. Tyrosine is an amino acid your body normally makes from another amino acid called phenylalanine.

Your body uses it to produce dopamine (a brain chemical involved in motivation and mood), norepinephrine (involved in alertness), and thyroid hormones. There are no inactive ingredients listed for this product.

Does it work?

Strong evidence
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed

This product doesn't appear to be marketed for a specific use, so we graded Tyrosine's overall clinical evidence instead.

Strong

Strong clinical evidence supports Tyrosine for:

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.
  • Since the label doesn't commit to one use, we graded the ingredient's overall clinical evidence instead.
  • On file: Phenylketonuria (PKU) — rated "Effective" (Natural Medicines).
  • On file: Cognitive function — rated "Possibly Effective" (Natural Medicines).
  • On file: Memory — rated "Possibly Effective" (Natural Medicines).

Tyrosine is effective for phenylketonuria (PKU), a rare genetic condition that prevents your body from breaking down phenylalanine. For cognitive function and memory, the evidence is possibly effective — meaning there's some support but it's not definitive.

For athletic performance, the evidence rates as possibly ineffective. The data we hold doesn't establish whether it works for alcohol use disorder or dementia.

The evidence, ingredient by ingredient Tyrosine

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Tyrosine is generally well tolerated in healthy adults, but there isn't enough safety data to know long-term effects from regular supplemental doses unless a doctor advises otherwise. The most common side effects from oral use are fatigue, headache, heartburn, and nausea.

Higher doses can increase these effects, though lowering your dose can help. There isn't enough safety data to know whether it's safe during pregnancy, and safety data during breastfeeding is also limited — talk with your doctor or pharmacist for personalized advice.

Side effects, ingredient by ingredient Tyrosine

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Tyrosine.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: Parkinson's medications.
  • For scale: 21 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Check with your doctor or pharmacist if you take levodopa (used for Parkinson's disease) or any thyroid hormone medication before starting this product — both carry moderate interaction risks with tyrosine.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with strong clinical evidence behind its ingredients' uses. Moderate medication interactions have been identified, and safety information is well characterized.

If you have PKU, tyrosine is an established option. For cognitive or memory support, the evidence is modest.

If you take levodopa for Parkinson's disease or any thyroid medication, talk with your doctor or pharmacist before starting this supplement — the interactions could affect how your medications work. For everyone else considering it, side effects are usually mild, but check your medications first.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Aug 23, 2020.

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

At a glance

General information

Key facts about L-Tyrosine Powder, straight from the product label.

Brand Nootropics Depot
Net contents 8.8 Ounce(s); 250 Gram(s)
Market status On market
Date entered into DSLD Aug 23, 2020
DSLD ID 232367
Product type Amino Acid/protein
Supplement form Powder
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Women (not pregnant or lactating)
From the label
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 L-Tyrosine Powder by Nootropics Depot, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
0.5 Gram(s)
Maximum serving Sizes:
0.5 Gram(s)
Servings per container
500
IngredientAmount% DV
L-Tyrosine500 mg--

Tap any ingredient to jump to its full detail below.

Label statements
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

Precautions

Disclaimer: Always consult with a qualified health physician before taking any new dietary supplement.

Warning: Keep out of reach of children. Do not take this or any other supplement if under the age of 18, pregnant or nursing a baby, or if you have any known or suspected medical conditions, and/or taking prescription drug(s) or OTC medication(s).

Do not take this or any other supplement if under the age of 18, pregnant or nursing a baby, or if you have any known or suspected medical conditions, and/or taking prescription drug(s) or OTC medication(s).

FDA Disclaimer Statement

This product is not intended to diagnose, treat, cure or prevent any diseases. These statements have not been evaluated by the Food & Drug Administration.

Suggested/Recommended/Usage/Directions

Suggested Use: As a dietary supplement, take 500mg once daily.

General Statements

Transfer scoops are not accurate forms of measurement. A milligram scale is needed to accurately measure dosages.

Storage

Storage: Store in a cool and dry place. Keep away from direct sunlight and heat.

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

L-Tyrosine Powder by Nootropics Depot label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

L-Tyrosine Powder label

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)
What’s inside

The Ingredients in L-Tyrosine Powder by Nootropics Depot

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size0.5 Gram(s) Dosage formPowder Servings per container500 Amounts shown are per serving.

L-Tyrosine

Interacts with
21 drugs
500 mg per serving

L-tyrosine is an amino acid your body uses to make brain chemicals like dopamine and norepinephrine. Some studies suggest it may help mental performan...

L-Tyrosine monograph & interactions
Interaction report

L-Tyrosine Powder by Nootropics Depot Drug Interactions

Want to check YOUR meds against L-Tyrosine Powder?

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 checker
21Drugs
21 Moderate

Ingredients driving the most interactions

L-Tyrosine 21

Individual Drug Interactions

The ingredients in L-Tyrosine Powder interact with 21 drugs. Click any drug to see the details.

1 of the 1 ingredient in L-Tyrosine Powder interact with drugs. Each result below shows which ingredient is responsible. L-Tyrosine

Each ingredient & the kinds of drugs it affects

For each ingredient in L-Tyrosine Powder 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.

L-Tyrosine2 drug types · 21 drugs

Levodopa

Theoretically, tyrosine might decrease the effectiveness of levodopa.
Tyrosine and levodopa compete for absorption in the proximal duodenum by the large neutral amino acid (LNAA) transport system. Advise patients to separate doses of tyrosine and levodopa by at least 2 hours.

Likelihood Probable Evidence D
Thyroid Hormone

Theoretically, tyrosine might have additive effects with thyroid hormone medications.
Tyrosine is a precursor to thyroxine and might increase levels of thyroid hormones.

Likelihood Probable Evidence D
L-Tyrosine full monograph & interactions
The maker

Brand information

Manufacturer and brand details for L-Tyrosine Powder, from the product label.

Nootropics Depot

See all Nootropics Depot products
Name
Nootropics Depot
Street Address
8380 S. Kyrene Rd. Ste. 110
City
Tempe
State
AZ
ZipCode
85284
Web Address
nootropicsdepot.com
Pharmacist Counseling Corner

L-Tyrosine Powder by Nootropics Depot: Common Questions

Does L-Tyrosine Powder by Nootropics Depot interact with any medications?
Yes. Based on its ingredients, L-Tyrosine Powder has a known interaction with 21 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
L-Tyrosine Powder contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
What does L-tyrosine actually do in my body?
Tyrosine is an amino acid your body uses to make dopamine and norepinephrine, brain chemicals involved in mood, motivation, and alertness. Your body also uses it to produce thyroid hormones. It's a building block your system normally makes on its own, but you can also get it from foods like chicken, eggs, and cheese.
Will this help me focus and remember things better?
The evidence for cognitive function and memory is possibly effective, meaning there's some research support but it's not definitive. Results vary from person to person, and this isn't proven to work for everyone.
Is it safe to take every day?
There isn't enough long-term safety data to know for certain whether daily supplemental doses are safe unless your doctor advises otherwise. In studies, it's been generally well tolerated, but talk with your healthcare provider before starting regular use.
What side effects might I experience?
Most common are fatigue, headache, heartburn, and nausea. These tend to be mild, and lowering your dose can help reduce them. No serious side effects have been documented, though a thorough safety evaluation hasn't been done.
Can I take this if I'm pregnant or breastfeeding?
There isn't enough safety data to know either way during pregnancy or breastfeeding. Talk with your doctor or pharmacist about whether this is appropriate for you in these situations.
Does this powder have any fillers or other inactive ingredients?
No — this product contains only L-tyrosine with no other inactive ingredients listed.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

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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.

L-Tyrosine Powder label
Go deeper

The Full Monographs Behind L-Tyrosine Powder’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Tyrosine

Interacts with 21 drugs

L-tyrosine is an amino acid your body uses to make brain chemicals like dopamine and norepinephrine. Some studies suggest it may help mental performance during short-term stress, sleep loss,...

Read the full Tyrosine monograph →
Sources

Sources & How We Checked

L-Tyrosine Powder'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.

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 4 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.

Tyrosine 4 references
  1. Meyer JS, Welch KM, Deshmukh VD, et al. Neurotransmitter precursor amino acids in the treatment of multi-infarct dementia and Alzheimer's disease. J Amer Geriat Soc 1977;25:289-98.
  2. DiPiro JT, Talbert RL, Yee GC, et al; eds. Pharmacotherapy: A pathophysiologic approach. 4th ed. Stamford, CT: Appleton & Lange, 1999.
  3. Wood DR, Reimherr FW, Wender PH. Amino acid precursors for the treatment of attention deficit disorder, residual type. Psychopharmacol Bull 1985;21:146-9.
  4. van Spronsen FJ, van Rijn M, Bekhof J. Phenylketonuria: tyrosine supplementation in phenylalanine-restricted diets. Am J Clin Nutr 2001;73:153-7. PubMed

See these in context on the Tyrosine monograph →

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

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