Amino 21 Ingredients & Drug Interactions
What is this page for?
First and foremost: checking Amino 21 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
Amino 21 is a dietary supplement by DaVinci Laboratories with 21 active ingredients. Its ingredients are commonly taken for muscle recovery and sports performance, gut health and 'leaky gut', recovery from severe illness or injury.Based on those ingredients, 493 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are L-Arginine, L-Citrulline, L-Taurine. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Amino 21 by DaVinci Laboratories
Ask about any prescription or over-the-counter medication and we check it for interactions with Amino 21 by DaVinci Laboratories — 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 Amino 21 by DaVinci Laboratories
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
Amino 21 contains 21 active amino acids — the building blocks your body uses to make proteins and neurotransmitters. They include L-glutamine, L-arginine, L-phenylalanine, L-lysine, L-citrulline, L-proline, L-glycine, L-ornithine, L-aspartic acid, L-histidine, L-threonine, L-serine, L-taurine, tyrosine, and L-cysteine, along with several others.
The supplement also contains cellulose as an inactive ingredient (capsule material).
Does it work?
Moderate evidence
The evidence is mixed and limited. L-glutamine shows effectiveness for sickle cell disease and is possibly effective for HIV/AIDS-related wasting, postoperative recovery, and critical illness.
L-methionine is possibly effective for neural tube birth defects. L-lysine is possibly effective for cold sores.
L-citrulline is possibly effective for athletic performance. Tyrosine is effective for phenylketonuria (PKU) and possibly effective for cognitive function and memory.
L-ornithine is possibly effective for athletic performance, and L-taurine is possibly effective for hepatitis and congestive heart failure. For most other uses listed — athletic performance with L-aspartic acid, osteoporosis with L-proline, and various others — the evidence is insufficient to rate or shows possibly ineffective results.
The data we hold does not establish effectiveness for many of the amino acids in this formula.
How safe is it?
Well-documented data
Most amino acids in this product are generally well tolerated at typical doses. Common side effects across the ingredients are gastrointestinal: bloating, constipation, diarrhea, gas, nausea, and abdominal pain.
Some ingredients carry specific cautions. L-glutamine should be used only under medical supervision if you have kidney or liver disease; avoid supplemental doses in pregnancy and while breastfeeding unless your doctor recommends it.
L-arginine can lower blood pressure and should be used only under medical supervision — safety for self-treatment is not established. L-phenylalanine should not be used by people with PKU (phenylketonuria), and supplements should be avoided in pregnancy and while breastfeeding.
L-citrulline should be avoided in pregnancy and while breastfeeding due to insufficient safety data. L-methionine, L-proline, L-glycine, L-ornithine, L-aspartic acid (which carries a possibly unsafe rating in lactation), L-histidine, L-threonine, L-serine, L-taurine, and tyrosine all lack enough safety data for pregnancy or breastfeeding and should be used only under a doctor's guidance if you are pregnant or nursing.
A rare case of kidney damage has been reported with long-term lysine use.
Meds to double-check
Major interaction found
Check your medications against this product if you take levodopa (Parkinson's), NMDA antagonists (certain psychiatric drugs), anticonvulsants, blood thinners (anticoagulants or antiplatelet drugs), blood pressure medications, potassium-sparing diuretics, diabetes medications, baclofen, monoamine oxidase inhibitors (MAOIs), clozapine, lithium, thyroid hormones, sildenafil (Viagra), or 5-HT4 agonists. These are the drug types with documented interactions; use the checker on this page to confirm your specific medications.
The bottom line
Scorecard at a glanceFully disclosed formula with some supporting evidence for its stated purpose. Major medication interactions have been identified, and safety information is well characterized.
This is a comprehensive amino acid blend that may appeal to athletes or people recovering from illness, but it's not for everyone. If you take any medications — especially for blood pressure, diabetes, Parkinson's disease, bipolar disorder, blood clotting, or psychiatric conditions — check each of your drugs against the tool below before you start.
Pregnant or breastfeeding? Talk to your pharmacist or doctor first; most ingredients lack proven safety data in those situations.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 17 of 21 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Dec 21, 2024.
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 Amino 21, straight from the product label.
| Brand | DaVinci Laboratories |
|---|---|
| Barcode (UPC) | 026664230294 |
| Net contents | 90 Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Dec 21, 2024 |
| DSLD ID | 322151 |
| Product type | Other Combinations |
| Supplement form | Capsule |
| Dietary claims / uses | Nutrient, All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years), Women (not pregnant or lactating), Gluten 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 Amino 21 by DaVinci Laboratories, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| L-Glutamine | 75 mg | -- |
| L-Leucine | 22.5 mg | -- |
| L-Arginine | 22.5 mg | -- |
| L-Alanine | 15 mg | -- |
| L-Isoleucine | 7.5 mg | -- |
| L-Methionine | 22.5 mg | -- |
| L-Lysine Hydrochloride | 30 mg | -- |
| L-Citrulline | 15 mg | -- |
| L-Phenylalanine | 30 mg | -- |
| L-Valine | 15 mg | -- |
| L-Proline | 7.5 mg | -- |
| L-Glycine | 45 mg | -- |
| L-Ornithine Hydrochloride | 7.5 mg | -- |
| L-Aspartic Acid | 45 mg | -- |
| L-Histidine Hydrochloride | 7.5 mg | -- |
| L-Threonine | 15 mg | -- |
| L-Serine | 15 mg | -- |
| L-Taurine | 75 mg | -- |
| Tyrosine | 30 mg | -- |
| Glutamic Acid | 225 mg | -- |
| L-Cysteine | 22.5 mg | -- |
Other ingredients: Cellulose
Tap any ingredient to jump to its full detail below.
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
General Statements
Truth We pledge total truth in labeling. Our family of products contains only the purest and most potent ingredients. Guaranteed.
750 mg
Formulation
Color of this product may vary due to color variations of the natural ingredients.
A Dietary Supplement to support brain function
Not a predigested protein
Gluten free
Precautions
Warning: Individuals with PKU (phenylketonuria) or who are pregnant or nursing should not use this product.
Keep out of reach of children.
To obtain product information or report a serious adverse event, call 1-800-325-1776.
Storage
Store in a cool, dry place.
FDA Disclaimer Statement
This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
FDA Statement of Identity
A Dietary Supplement to support brain function
Formula
21 individual crystalline free-form amino acids
Suggested/Recommended/Usage/Directions
Suggested Use: As a dietary supplement, take 1 capsule between meals, 3 times daily, or as directed by your healthcare practitioner.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Amino 21 by DaVinci Laboratories 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 Amino 21 by DaVinci Laboratories
These are the 21 active ingredients this product is made of. Select any to open its full monograph.
Serving size1 Capsule(s) Dosage formCapsule Servings per container90 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.
L-Glutamine
Interacts with50 drugs
Glutamine is the most abundant amino acid in the body and is usually made in your muscles. A prescription form is FDA-approved to help reduce sickle c...
L-Glutamine monograph & interactionsL-Leucine
L-Arginine
Interacts with403 drugs
L-arginine is an amino acid that the body uses to make nitric oxide, a substance that helps blood vessels relax and widen. It is popularly used for bl...
L-Arginine monograph & interactionsL-Alanine
No knowninteractions
Alpha-alanine (usually called alanine) is a non-essential amino acid your body can make on its own and that you also get from protein foods. Most peop...
L-Alanine monograph & interactionsL-Isoleucine
L-Methionine
No knowninteractions
Methionine is an essential amino acid that your body needs for protein building and many basic chemical reactions. Most people get enough from a norma...
L-Methionine monograph & interactionsL-Lysine Hydrochloride
Interacts with1 drug
Lysine is an essential amino acid your body cannot make on its own, so it must come from food or supplements. People most often take extra lysine to t...
L-Lysine Hydrochloride monograph & interactionsL-Citrulline
Interacts with178 drugs
L-citrulline is an amino acid that the body turns into L-arginine to help make nitric oxide, which relaxes blood vessels and may improve blood flow. I...
L-Citrulline monograph & interactionsL-Phenylalanine
Interacts with16 drugs
Phenylalanine is an essential amino acid the body uses to make brain chemicals like dopamine and norepinephrine. Some people take it for mood, vitilig...
L-Phenylalanine monograph & interactionsL-Valine
L-Proline
No knowninteractions
Proline is a non-essential amino acid that your body can make on its own and that you also get from protein-rich foods. It is a key building block of...
L-Proline monograph & interactionsL-Glycine
Interacts with1 drug
Glycine is a non-essential amino acid your body makes on its own and that also appears in protein-rich foods. It is most studied for improving sleep q...
L-Glycine monograph & interactionsL-Ornithine Hydrochloride
No knowninteractions
Ornithine is a non-essential amino acid your body makes naturally as part of the urea cycle, which helps remove ammonia. It is sold as a supplement fo...
L-Ornithine Hydrochloride monograph & interactionsL-Aspartic Acid
No knowninteractions
Aspartic acid is a common amino acid your body makes on its own and gets from protein-rich foods, so a true deficiency is rare. D-aspartic acid is hea...
L-Aspartic Acid monograph & interactionsL-Histidine Hydrochloride
No knowninteractions
Histidine is an essential amino acid your body needs to build proteins and to make compounds like histamine and carnosine. Most people get enough from...
L-Histidine Hydrochloride monograph & interactionsL-Threonine
Interacts with3 drugs
Threonine is an essential amino acid your body needs but cannot make, so you must get it from food or supplements. Most people get plenty from a norma...
L-Threonine monograph & interactionsL-Serine
No knowninteractions
Serine is an amino acid your body can make on its own and also gets from protein-rich foods, so most people do not need a supplement. L-serine has bee...
L-Serine monograph & interactionsL-Taurine
Interacts with173 drugs
Taurine is an amino acid your body makes naturally and that you also get from animal foods. It is widely used in energy drinks and sports supplements,...
L-Taurine monograph & interactionsTyrosine
Interacts with21 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 performan...
Tyrosine monograph & interactionsGlutamic Acid
L-Cysteine
Interacts with86 drugs
L-cysteine is a sulfur-containing amino acid your body uses to make proteins and the antioxidant glutathione. Most people get enough from food, and su...
L-Cysteine monograph & interactionsOther (inactive) ingredients: Cellulose. These complete the product’s ingredient list but are not active constituents.
Amino 21 by DaVinci Laboratories Drug Interactions
HelloPharmacist Interaction Report
Amino 21 by DaVinci Laboratories contains 21 amino acids, several of which interact with medications.
The most serious interaction involves L-phenylalanine and levodopa (a Parkinson's medication): phenylalanine competes with levodopa for transport into the brain, potentially worsening tremor, rigidity, and symptom fluctuations — this is a Major severity interaction.
Read the full breakdown — every affected drug type, severity by severity
L-arginine and L-citrulline both interact Moderately with blood pressure medications (antihypertensives, ACE inhibitors, angiotensin receptor blockers) and blood thinners (anticoagulants and antiplatelet drugs). L-arginine also affects potassium-sparing diuretics, diabetes medications, and certain other drugs (isoproterenol, sildenafil).
L-citrulline specifically interacts with phosphodiesterase-5 inhibitors like sildenafil. L-phenylalanine additionally interacts Moderately with baclofen and monoamine oxidase inhibitors (MAOIs).
L-threonine has a Major interaction with NMDA antagonists, a class of psychiatric and neurological drugs.
Other Moderate interactions include: L-glutamine with anticonvulsants; L-glycine with clozapine; L-taurine with antihypertensives and lithium; tyrosine with levodopa and thyroid hormone; and L-cysteine with diabetes medications. L-lysine has a Minor interaction with 5-HT4 agonists.
We could not check L-leucine, L-alanine, L-isoleucine, glutamic acid, or their interactions with your medications.
Altogether, these interactions span 490 individual medications. Use the medication checker below to see if any of your prescriptions are affected before starting this product.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Amino 21?
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 Amino 21 interact with 493 drugs. Click any drug to see the details.
10 of the 21 ingredients in Amino 21 interact with drugs. Each result below shows which ingredient is responsible. L-Arginine L-Citrulline L-Taurine L-Cysteine L-Glutamine Tyrosine L-Phenylalanine L-Threonine L-Lysine Hydrochloride L-Glycine
Aminophylline, Amobarbital, EphedrineAmesec
How Aminophylline, Amobarbital, Ephedrine interacts with Amino 21 — through 1 ingredient. Tap an ingredient for the detail:
L-glutamineAnticonvulsants Moderate
Interaction Summary
Theoretically, glutamine might antagonize the effects of anticonvulsant medications.
Read the full L-glutamine + Aminophylline, Amobarbital, Ephedrine interactionAmlodipineNorliqva
How Amlodipine interacts with Amino 21 — through 3 ingredients. Tap an ingredient for the detail:
L-arginineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-arginine and antihypertensive drugs may increase the risk of hypotension.
Read the full L-arginine + Amlodipine interactionL-taurineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, taurine might increase the risk of hypotension when taken with antihypertensive drugs.
Read the full L-taurine + Amlodipine interactionL-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Amlodipine interactionAmlodipine BenzoateKaterzia
How Amlodipine Benzoate interacts with Amino 21 — through 3 ingredients. Tap an ingredient for the detail:
L-taurineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, taurine might increase the risk of hypotension when taken with antihypertensive drugs.
Read the full L-taurine + Amlodipine Benzoate interactionL-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Amlodipine Benzoate interactionL-arginineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-arginine and antihypertensive drugs may increase the risk of hypotension.
Read the full L-arginine + Amlodipine Benzoate interactionAmlodipine BesilateIstin
How Amlodipine Besilate interacts with Amino 21 — through 3 ingredients. Tap an ingredient for the detail:
L-arginineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-arginine and antihypertensive drugs may increase the risk of hypotension.
Read the full L-arginine + Amlodipine Besilate interactionL-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Amlodipine Besilate interactionL-taurineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, taurine might increase the risk of hypotension when taken with antihypertensive drugs.
Read the full L-taurine + Amlodipine Besilate interactionAmlodipine BesylateNorvasc
How Amlodipine Besylate interacts with Amino 21 — through 3 ingredients. Tap an ingredient for the detail:
L-taurineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, taurine might increase the risk of hypotension when taken with antihypertensive drugs.
Read the full L-taurine + Amlodipine Besylate interactionL-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Amlodipine Besylate interactionL-arginineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-arginine and antihypertensive drugs may increase the risk of hypotension.
Read the full L-arginine + Amlodipine Besylate interactionAmlodipine Besylate, BenazeprilLotrel
How Amlodipine Besylate, Benazepril interacts with Amino 21 — through 3 ingredients. Tap an ingredient for the detail:
L-arginineAntihypertensive Drugs, Ace Inhibitors (aceis) Moderate
Interaction Summary
Theoretically, concomitant use of L-arginine and antihypertensive drugs may increase the risk of hypotension.
Read the full L-arginine + Amlodipine Besylate, Benazepril interactionL-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Amlodipine Besylate, Benazepril interactionL-taurineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, taurine might increase the risk of hypotension when taken with antihypertensive drugs.
Read the full L-taurine + Amlodipine Besylate, Benazepril interactionAmlodipine, CelecoxibConsensi
How Amlodipine, Celecoxib interacts with Amino 21 — through 3 ingredients. Tap an ingredient for the detail:
L-arginineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-arginine and antihypertensive drugs may increase the risk of hypotension.
Read the full L-arginine + Amlodipine, Celecoxib interactionL-taurineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, taurine might increase the risk of hypotension when taken with antihypertensive drugs.
Read the full L-taurine + Amlodipine, Celecoxib interactionL-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Amlodipine, Celecoxib interactionAmmonium ChlorideAmmonium Chloride
How Ammonium Chloride interacts with Amino 21 — through 3 ingredients. Tap an ingredient for the detail:
L-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Ammonium Chloride interactionL-arginineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-arginine and antihypertensive drugs may increase the risk of hypotension.
Read the full L-arginine + Ammonium Chloride interactionL-taurineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, taurine might increase the risk of hypotension when taken with antihypertensive drugs.
Read the full L-taurine + Ammonium Chloride interactionAmobarbitalAmytal
How Amobarbital interacts with Amino 21 — through 1 ingredient. Tap an ingredient for the detail:
L-glutamineAnticonvulsants Moderate
Interaction Summary
Theoretically, glutamine might antagonize the effects of anticonvulsant medications.
Read the full L-glutamine + Amobarbital interactionAmobarbital, Ephedrine SulfateEphedrine & Amytal
How Amobarbital, Ephedrine Sulfate interacts with Amino 21 — through 1 ingredient. Tap an ingredient for the detail:
L-glutamineAnticonvulsants Moderate
Interaction Summary
Theoretically, glutamine might antagonize the effects of anticonvulsant medications.
Read the full L-glutamine + Amobarbital, Ephedrine Sulfate interactionAmobarbital, SecobarbitalTuinal
How Amobarbital, Secobarbital interacts with Amino 21 — through 1 ingredient. Tap an ingredient for the detail:
L-glutamineAnticonvulsants Moderate
Interaction Summary
Theoretically, glutamine might antagonize the effects of anticonvulsant medications.
Read the full L-glutamine + Amobarbital, Secobarbital interactionAmphetamineAdensys XR-ODT, Adzenys ER, Dyanavel XR, Mydayis
How Amphetamine interacts with Amino 21 — through 1 ingredient. Tap an ingredient for the detail:
L-phenylalanineMonoamine Oxidase Inhibitors (maois) Moderate
Interaction Summary
Theoretically, concomitant use of L-phenylalanine and non-selective MAOIs might increase the risk of hypertensive crisis.
Read the full L-phenylalanine + Amphetamine interactionAnacaulase-bcdbNexoBrid
How Anacaulase-bcdb interacts with Amino 21 — through 1 ingredient. Tap an ingredient for the detail:
L-arginineAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-arginine with anticoagulant and antiplatelet drugs might have additive effects and increase the risk of bleeding.
Read the full L-arginine + Anacaulase-bcdb interactionAnagrelideAgrylin
How Anagrelide interacts with Amino 21 — through 1 ingredient. Tap an ingredient for the detail:
L-arginineAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-arginine with anticoagulant and antiplatelet drugs might have additive effects and increase the risk of bleeding.
Read the full L-arginine + Anagrelide interactionAnisindioneMiradon
How Anisindione interacts with Amino 21 — through 1 ingredient. Tap an ingredient for the detail:
L-arginineAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-arginine with anticoagulant and antiplatelet drugs might have additive effects and increase the risk of bleeding.
Read the full L-arginine + Anisindione interactionAntidiabetes, Dipeptidyl Peptidase-4 (dpp-iv) InhibitorGlyxambi
How Antidiabetes, Dipeptidyl Peptidase-4 (dpp-iv) Inhibitor interacts with Amino 21 — through 2 ingredients. Tap an ingredient for the detail:
L-arginineAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-arginine might have additive effects with antidiabetes drugs.
Read the full L-arginine + Antidiabetes, Dipeptidyl Peptidase-4 (dpp-iv) Inhibitor interactionL-cysteineAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, taking L-cysteine supplements with antidiabetes drugs might increase the risk of hypoglycemia.
Read the full L-cysteine + Antidiabetes, Dipeptidyl Peptidase-4 (dpp-iv) Inhibitor interactionAntithrombin IiiThrombate III
How Antithrombin Iii interacts with Amino 21 — through 1 ingredient. Tap an ingredient for the detail:
L-arginineAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-arginine with anticoagulant and antiplatelet drugs might have additive effects and increase the risk of bleeding.
Read the full L-arginine + Antithrombin Iii interactionApixabanEliquis
How Apixaban interacts with Amino 21 — through 1 ingredient. Tap an ingredient for the detail:
L-arginineAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-arginine with anticoagulant and antiplatelet drugs might have additive effects and increase the risk of bleeding.
Read the full L-arginine + Apixaban interactionAprobarbital, Butabarbital, PhenobarbitalTriple Barbital
How Aprobarbital, Butabarbital, Phenobarbital interacts with Amino 21 — through 1 ingredient. Tap an ingredient for the detail:
L-glutamineAnticonvulsants Moderate
Interaction Summary
Theoretically, glutamine might antagonize the effects of anticonvulsant medications.
Read the full L-glutamine + Aprobarbital, Butabarbital, Phenobarbital interactionAprocitentanTryvio
How Aprocitentan interacts with Amino 21 — through 3 ingredients. Tap an ingredient for the detail:
L-arginineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-arginine and antihypertensive drugs may increase the risk of hypotension.
Read the full L-arginine + Aprocitentan interactionL-taurineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, taurine might increase the risk of hypotension when taken with antihypertensive drugs.
Read the full L-taurine + Aprocitentan interactionL-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Aprocitentan interactionArgatrobanArgatroban
How Argatroban interacts with Amino 21 — through 1 ingredient. Tap an ingredient for the detail:
L-arginineAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-arginine with anticoagulant and antiplatelet drugs might have additive effects and increase the risk of bleeding.
Read the full L-arginine + Argatroban interactionAspirinAngettes 75, ASA, Asaphen, Aspirin, Caprin, Cartia +8 more
How Aspirin interacts with Amino 21 — through 1 ingredient. Tap an ingredient for the detail:
L-arginineAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-arginine with anticoagulant and antiplatelet drugs might have additive effects and increase the risk of bleeding.
Read the full L-arginine + Aspirin interactionAspirin, Aluminum Hydroxide, Codeine Phosphate, Magnesium HydroxideAscriptin Codeine #3
How Aspirin, Aluminum Hydroxide, Codeine Phosphate, Magnesium Hydroxide interacts with Amino 21 — through 1 ingredient. Tap an ingredient for the detail:
L-arginineAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-arginine with anticoagulant and antiplatelet drugs might have additive effects and increase the risk of bleeding.
Read the full L-arginine + Aspirin, Aluminum Hydroxide, Codeine Phosphate, Magnesium Hydroxide interactionAspirin, ButalbitalAxotal
How Aspirin, Butalbital interacts with Amino 21 — through 1 ingredient. Tap an ingredient for the detail:
L-arginineAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-arginine with anticoagulant and antiplatelet drugs might have additive effects and increase the risk of bleeding.
Read the full L-arginine + Aspirin, Butalbital interactionAspirin, Butalbital, CaffeineFiorinal
How Aspirin, Butalbital, Caffeine interacts with Amino 21 — through 1 ingredient. Tap an ingredient for the detail:
L-arginineAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-arginine with anticoagulant and antiplatelet drugs might have additive effects and increase the risk of bleeding.
Read the full L-arginine + Aspirin, Butalbital, Caffeine interactionAspirin, Butalbital, Caffeine, Codeine PhosphateFiorinal w/ Codeine
How Aspirin, Butalbital, Caffeine, Codeine Phosphate interacts with Amino 21 — through 1 ingredient. Tap an ingredient for the detail:
L-arginineAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-arginine with anticoagulant and antiplatelet drugs might have additive effects and increase the risk of bleeding.
Read the full L-arginine + Aspirin, Butalbital, Caffeine, Codeine Phosphate interactionAspirin, Butalbital, Caffeine, PhenacetinMarnal
How Aspirin, Butalbital, Caffeine, Phenacetin interacts with Amino 21 — through 1 ingredient. Tap an ingredient for the detail:
L-arginineAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-arginine with anticoagulant and antiplatelet drugs might have additive effects and increase the risk of bleeding.
Read the full L-arginine + Aspirin, Butalbital, Caffeine, Phenacetin interactionAspirin, CaffeineAnacin
How Aspirin, Caffeine interacts with Amino 21 — through 1 ingredient. Tap an ingredient for the detail:
L-arginineAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-arginine with anticoagulant and antiplatelet drugs might have additive effects and increase the risk of bleeding.
Read the full L-arginine + Aspirin, Caffeine interactionAspirin, Caffeine, Codeine PhosphateAnacin w/ Codeine
How Aspirin, Caffeine, Codeine Phosphate interacts with Amino 21 — through 1 ingredient. Tap an ingredient for the detail:
L-arginineAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-arginine with anticoagulant and antiplatelet drugs might have additive effects and increase the risk of bleeding.
Read the full L-arginine + Aspirin, Caffeine, Codeine Phosphate interactionAspirin, Caffeine, Dihydrocodeine BitartrateSynalgos DC
How Aspirin, Caffeine, Dihydrocodeine Bitartrate interacts with Amino 21 — through 1 ingredient. Tap an ingredient for the detail:
L-arginineAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-arginine with anticoagulant and antiplatelet drugs might have additive effects and increase the risk of bleeding.
Read the full L-arginine + Aspirin, Caffeine, Dihydrocodeine Bitartrate interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Amino 21 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.
L-Arginine
Ace Inhibitors (Aceis)
Theoretically, concomitant use of L-arginine and ACE inhibitors may increase the risk for hypotension and hyperkalemia.
Combining L-arginine with some antihypertensive drugs, especially ACE inhibitors, seems to have additive vasodilating and blood pressure-lowering effects. Furthermore, ACE inhibitors can increase potassium levels. Use of L-arginine has been associated with hyperkalemia in some patients. Theoretically, concomitant use of ACE inhibitors with L-arginine may increases the risk of hyperkalemia.
Angiotensin Receptor Blockers (Arbs)
Theoretically, concomitant use of L-arginine and ARBs may increase the risk of hypotension and hyperkalemia.
L-arginine increases nitric oxide, which causes vasodilation. Combining L-arginine with ARBs seems to increase L-arginine-induced vasodilation. Furthermore, ARBs can increase potassium levels. Use of L-arginine has been associated with hyperkalemia in some patients. Theoretically, concomitant use of ARBs with L-arginine may increases the risk of hyperkalemia.
Anticoagulant/Antiplatelet Drugs
Theoretically, concomitant use of L-arginine with anticoagulant and antiplatelet drugs might have additive effects and increase the risk of bleeding.
Preliminary research suggests that L-arginine infusions reduce platelet aggregation in humans. The clinical significance of this effect is unclear.
Antidiabetes Drugs
Theoretically, concomitant use of L-arginine might have additive effects with antidiabetes drugs.
Preliminary clinical research shows that L-arginine decreases blood glucose levels in patients with type 2 diabetes.
Antihypertensive Drugs
Theoretically, concomitant use of L-arginine and antihypertensive drugs may increase the risk of hypotension.
L-arginine increases nitric oxide, which causes vasodilation. Clinical evidence shows that L-arginine can reduce blood pressure in some individuals with hypertension. Furthermore, combining L-arginine with some antihypertensive drugs seems to have additive vasodilating and blood pressure-lowering effects.
Isoproterenol (Isuprel)
Theoretically, concurrent use of isoproterenol and L-arginine might result in additive effects and hypotension.
Preliminary clinical evidence suggests that L-arginine enhances isoproterenol-induced vasodilation in patients with essential hypertension or a family history of essential hypertension.
Potassium-Sparing Diuretics
Theoretically concomitant use of potassium-sparing diuretics with L-arginine may increases the risk of hyperkalemia.
Potassium-sparing diuretics can increase potassium levels. Use of L-arginine has been associated with hyperkalemia in some patients.
Sildenafil (Viagra)
Theoretically, concurrent use of sildenafil and L-arginine might increase the risk for hypotension.
In vivo, concurrent use of L-arginine and sildenafil has resulted in increased vasodilation. Theoretically, concurrent use might have additive vasodilatory and hypotensive effects. However, in studies evaluating the combined use of L-arginine and sildenafil for erectile dysfunction, hypotension was not reported.
Testosterone
Theoretically, concomitant use of L-arginine and testosterone might have additive effects.
In clinical research, L-arginine increases the level of testosterone in male patients with erectile dysfunction. The clinical significance of this finding is unclear.
L-Citrulline
Antihypertensive Drugs
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
L-citrulline is converted to L-arginine, which can increase nitric oxide and cause vasodilation. However, a meta-analysis of 5 small clinical studies suggests that taking L-citrulline 3-6 grams daily for 1-8 weeks does not lower blood pressure when compared with control.
Phosphodiesterase-5 Inhibitors
Theoretically, concurrent use of phosphodiesterase-5 (PDE-5) inhibitors and L-citrulline might result in additive vasodilation.
L-citrulline is converted to L-arginine, which can increase nitric oxide and cause vasodilation. Theoretically, taking L-arginine with PDE-5 inhibitors might have additive vasodilatory and hypotensive effects. However, in studies evaluating the combined use of L-arginine and sildenafil for erectile dysfunction, hypotension was not reported.
L-Taurine
Antihypertensive Drugs
Theoretically, taurine might increase the risk of hypotension when taken with antihypertensive drugs.
Some clinical evidence suggests that taurine can reduce both systolic and diastolic blood pressure.
Lithium
Theoretically, taurine might reduce excretion and increase plasma levels of lithium.
Taurine is thought to have diuretic properties, which might reduce the excretion of lithium.
L-Cysteine
Antidiabetes Drugs
Theoretically, taking L-cysteine supplements with antidiabetes drugs might increase the risk of hypoglycemia.
Animal research suggests that L-cysteine can have hypoglycemic effects.
L-Glutamine
Anticonvulsants
Theoretically, glutamine might antagonize the effects of anticonvulsant medications.
Glutamine is metabolized to the excitatory neurotransmitter glutamate. Glutamate might have antagonistic effects with anticonvulsant drugs. However, this interaction has not yet been reported in humans.
Tyrosine
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.
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.
L-Phenylalanine
Levodopa
Phenylalanine, especially in high doses, can reduce the effectiveness of levodopa.
Phenylalanine competes with levodopa for carrier-mediated transport into the brain. The resulting reduction in levels of levodopa in the brain can exacerbate tremor, rigidity, and the "on-off" phenomenon in patients with Parkinson disease.
Baclofen
Concomitant intake of phenylalanine may reduce the intestinal absorption of baclofen.
Phenylalanine and baclofen share the same intestinal carrier for absorption; phenylalanine competitively inhibits the absorption of baclofen, reducing its plasma levels.
Monoamine Oxidase Inhibitors (Maois)
Theoretically, concomitant use of L-phenylalanine and non-selective MAOIs might increase the risk of hypertensive crisis.
L-phenylalanine is metabolized to tyrosine. Some evidence suggests that L-phenylalanine, given with the non-selective MAOI pargyline, might prevent the elimination of tyramine, increasing the risk of hypertensive crisis. However, this was not reported in a small number of patients when using L-phenylalanine with the partially selective MAO-B inhibitor, selegiline.
L-Threonine
Nmda Antagonists
Theoretically, threonine might decrease the effects of NMDA antagonists.
Threonine increases central nervous system (CNS) glycine levels. Glycine seems to bind a site on NMDA receptors and enhance the activity of the receptors.
L-Lysine Hydrochloride
5-Ht4 Agonists
Theoretically, lysine may reduce the effects of 5-HT4 agonists.
Animal research suggests that L-lysine is a partial serotonin receptor 4 (5-HT4) antagonist and inhibits diarrhea induced by the 5-HT4 agonist, 5-hydroxytryptophane.
L-Glycine
Clozapine (Clozaril)
Theoretically, glycine might decrease the effectiveness of clozapine.
One small clinical study in patients with schizophrenia shows that adding glycine to clozapine therapy worsens symptoms of schizophrenia when compared with clozapine alone. The mechanism of this interaction is unclear.
Brand information
Manufacturer and brand details for Amino 21, from the product label.
DaVinci Laboratories
See all DaVinci Laboratories products- Name
- DaVinci Laboratories a division of FoodScience LLC
- Street Address
- 929 Harvest Lane
- City
- Williston
- State
- VT
- ZipCode
- 05495
- Phone Number
- 1-800-325-1776
- Web Address
- www.davincilabs.com
Amino 21 by DaVinci Laboratories: Common Questions
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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.
The Full Monographs Behind Amino 21’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Glutamine
Interacts with 50 drugsGlutamine is the most abundant amino acid in the body and is usually made in your muscles. A prescription form is FDA-approved to help reduce sickle cell disease complications, but for most...
Read the full Glutamine monograph → Herb & supplement monographL-arginine
Interacts with 403 drugsL-arginine is an amino acid that the body uses to make nitric oxide, a substance that helps blood vessels relax and widen. It is popularly used for blood pressure, erectile dysfunction, and...
Read the full L-arginine monograph → Herb & supplement monographAlpha-alanine
Alpha-alanine (usually called alanine) is a non-essential amino acid your body can make on its own and that you also get from protein foods. Most people do not need a supplement, and strong...
Read the full Alpha-alanine monograph → Herb & supplement monographMethionine
Methionine is an essential amino acid that your body needs for protein building and many basic chemical reactions. Most people get enough from a normal diet, and supplements are generally no...
Read the full Methionine monograph → Herb & supplement monographLysine
Interacts with 1 drugLysine is an essential amino acid your body cannot make on its own, so it must come from food or supplements. People most often take extra lysine to try to prevent or shorten cold sores, but...
Read the full Lysine monograph → Herb & supplement monographL-citrulline
Interacts with 178 drugsL-citrulline is an amino acid that the body turns into L-arginine to help make nitric oxide, which relaxes blood vessels and may improve blood flow. It is popular for exercise performance an...
Read the full L-citrulline monograph → Herb & supplement monographPhenylalanine
Interacts with 16 drugsPhenylalanine is an essential amino acid the body uses to make brain chemicals like dopamine and norepinephrine. Some people take it for mood, vitiligo, or pain, but the evidence is mostly l...
Read the full Phenylalanine monograph → Herb & supplement monographProline
Proline is a non-essential amino acid that your body can make on its own and that you also get from protein-rich foods. It is a key building block of collagen, but strong human evidence that...
Read the full Proline monograph → Herb & supplement monographGlycine
Interacts with 1 drugGlycine is a non-essential amino acid your body makes on its own and that also appears in protein-rich foods. It is most studied for improving sleep quality, where early research is promisin...
Read the full Glycine monograph → Herb & supplement monographOrnithine
Ornithine is a non-essential amino acid your body makes naturally as part of the urea cycle, which helps remove ammonia. It is sold as a supplement for fatigue, exercise recovery, and sleep,...
Read the full Ornithine monograph → Herb & supplement monographAspartic Acid
Aspartic acid is a common amino acid your body makes on its own and gets from protein-rich foods, so a true deficiency is rare. D-aspartic acid is heavily marketed for boosting testosterone...
Read the full Aspartic Acid monograph → Herb & supplement monographHistidine
Histidine is an essential amino acid your body needs to build proteins and to make compounds like histamine and carnosine. Most people get enough from a normal diet, and good-quality researc...
Read the full Histidine monograph → Herb & supplement monographThreonine
Interacts with 3 drugsThreonine is an essential amino acid your body needs but cannot make, so you must get it from food or supplements. Most people get plenty from a normal diet, and high-quality evidence for ta...
Read the full Threonine monograph → Herb & supplement monographSerine
Serine is an amino acid your body can make on its own and also gets from protein-rich foods, so most people do not need a supplement. L-serine has been studied for certain neurological condi...
Read the full Serine monograph → Herb & supplement monographTaurine
Interacts with 173 drugsTaurine is an amino acid your body makes naturally and that you also get from animal foods. It is widely used in energy drinks and sports supplements, and short-term use appears generally sa...
Read the full Taurine monograph → Herb & supplement monographTyrosine
Interacts with 21 drugsL-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 → Herb & supplement monographL-cysteine
Interacts with 86 drugsL-cysteine is a sulfur-containing amino acid your body uses to make proteins and the antioxidant glutathione. Most people get enough from food, and supplements are usually well tolerated, bu...
Read the full L-cysteine monograph →Sources & How We Checked
Amino 21'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 177 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.
Glutamine 11 references
- Miller AL. Therapeutic considerations of L-glutamine: a review of the literature. Altern Med Rev 1999;4:239-48..
- Bozzetti F, Biganzoli L, Gavazzi C, et al. Glutamine supplementation in cancer patients receiving chemotherapy: a double-blind randomized study. Nutrition 1997;13:748-51.. PubMed
- Mebane AH. L-Glutamine and mania. Am J Psychiatry 984;141:1302-3.
- Meldrum BS. Glutamate as a neurotransmitter in the brain: review of physiology and pathology. J Nutr 2000;130:1007S-15S.. PubMed
- Garlick PJ. Assessment of the safety of glutamine and other amino acids. J Nutr 2001;131:2556S-61S.. PubMed
- Chapman AG. Glutamate and epilepsy. J Nutr 2000;130:1043S-5S.. PubMed
- Ziegler TR. Glutamine supplementation in cancer patients receiving bone marrow transplantation and high dose chemotherapy. J Nutr 2001;131:2578S-84S.. PubMed
- Laviano A, Molfino A, Lacaria MT, Canelli A, De Leo S, Preziosa I, Rossi Fanelli F. Glutamine supplementation favors weight loss in nondieting obese female patients. A pilot study. Eur J Clin Nutr. 2014 Nov;68(11):1264-6. PubMed
- Endari (l-glutamine) [package insert]. Torrance, CA: Emmaus Medical,Inc; 2017.
- Niihara Y, Miller ST, Kanter J, et al. A Phase 3 Trial of l-Glutamine in Sickle Cell Disease. N Engl J Med 2018;379(3):226-35. doi: 10.1056/NEJMoa1715971.
- Ogden HB, Child RB, Fallowfield JL, et al. Gastrointestinal Tolerance of Low, Medium and High Dose Acute Oral l-Glutamine Supplementation in Healthy Adults: A Pilot Study. Nutrients. 2020;12(10):2953. PubMed
L-arginine 66 references
- Sapienza MA, Kharitonov SA, Horvath I, et al. Effect of inhaled L-arginine on exhaled nitric oxide in normal and asthmatic subjects. Thorax 1998;53:172-5.
- Clarkson P, Adams MR, Powe AJ, et al. Oral L-arginine improves endothelium-dependent dilation in hypercholesterolemic young adults. J Clin Invest 1996;97:1989-94. PubMed
- Tenenbaum A, Fisman EZ, Motro M. L-arginine: Rediscovery in progress. Cardiology 1998;90:153-9.
- Brittenden J, Park KGM, Heys SD, et al. L-Arginine stimulates host defenses in patients with breast cancer. Surgery 1994;115:205-12.
- Korting GE, Smith SD, Wheeler MA, et al. A randomized double-blind trial of oral L-arginine for treatment of interstitial cystitis. J Urol 1999;161:558-65. DOI
- Rector TS, Bank AJ, Mullen KA, et al. Randomized, double-blind, placebo-controlled study of supplemental oral L-arginine in patients with heart failure. Circulation 1996;93:2135-41.
- Siani A, Pagano E, Iacone R, et al. Blood pressure and metabolic changes during dietary L-arginine supplementation in humans. Am J Hypertens 2000;13:547-51. PubMed
- Cheng JW, Balwin SN. L-arginine in the management of cardiovascular diseases. Ann Pharmacother 2001;35:755-64. PubMed
- Wallace AW, Tom WL. Interaction of L-arginine and phosphodiesterase inhibitors in vasodilation of the porcine internal mammary artery. Anesth Analg 2000;90:840-6. DOI
- Huynh NT, Tayek JA. Oral arginine reduces systemic blood pressure in type 2 diabetes: its potential role in nitric oxide generation. J Am Coll Nutr 2002;21:422-7.. PubMed
- Staff AC, Berge L, Haugen G, et al. Dietary supplementation with L-arginine or placebo in women with pre-eclampsia. Acta Obstet Gynecol Scand 2004;83:103-7.
- Resnick DJ, Softness B, Murphy AR, et al. Case report of an anaphylactoid reaction to arginine. Ann Allergy Asthma Immunol 2002;88:67-8. PubMed
- Anon. Arginine hydrochloride injection (marketed as R-Gene 10). FDA Drug Safety Newsletter 2009;2(2):16-18. Available at: www.fda.gov/Drugs/DrugSafety/DrugSafetyNewsletter/default.htm.
- Higashi Y, Oshima T, Sasaki S, et. al. Angiotensin-converting enzyme inhibition, but not calcium antagonism, improves a response of the renal vasculature to L-arginine in patients with essential hypertension. Hypertension. 1998 Jul;32(1):16-24.
- Facchinetti, F., Longo, M., Piccinini, F., Neri, I., and Volpe, A. L-arginine infusion reduces blood pressure in preeclamptic women through nitric oxide release. J Soc Gynecol.Investig. 1999;6(4):202-207. DOI
- de Gouw, H. W., Verbruggen, M. B., Twiss, I. M., and Sterk, P. J. Effect of oral L-arginine on airway hyperresponsiveness to histamine in asthma. Thorax 1999;54(11):1033-1035. PubMed
- Komers, R., Komersova, K., Kazdova, L., Ruzickova, J., and Pelikanova, T. Effect of ACE inhibition and angiotensin AT1 receptor blockade on renal and blood pressure response to L-arginine in humans. J Hypertens. 2000;18(1):51-59. PubMed
- Cartledge, J. J., Davies, A. M., and Eardley, I. A randomized double-blind placebo-controlled crossover trial of the efficacy of L-arginine in the treatment of interstitial cystitis. BJU.Int. 2000;85(4):421-426.
- Sozykin, A. V., Noeva, E. A., Balakhonova, T. V., Pogorelova, O. A., and Men'shikov, M. I. [Effect of L-arginine on platelet aggregation, endothelial function adn exercise tolerance in patients with stable angina pectoris]. Ter.Arkh. 2000;72(8):24-27.
- Nagaya, N., Uematsu, M., Oya, H., Sato, N., Sakamaki, F., Kyotani, S., Ueno, K., Nakanishi, N., Yamagishi, M., and Miyatake, K. Short-term oral administration of L-arginine improves hemodynamics and exercise capacity in patients with precapillary pulmona
- Stokes, G. S., Barin, E. S., Gilfillan, K. L., and Kaesemeyer, W. H. Interactions of L-arginine, isosorbide mononitrate, and angiotensin II inhibitors on arterial pulse wave. Am J Hypertens. 2003;16(9 Pt 1):719-724.
- Park, K. G., Heys, S. D., Blessing, K., Kelly, P., McNurlan, M. A., Eremin, O., and Garlick, P. J. Stimulation of human breast cancers by dietary L-arginine. Clin.Sci.(Lond) 1992;82(4):413-417.
- Palloshi, A., Fragasso, G., Piatti, P., Monti, L. D., Setola, E., Valsecchi, G., Galluccio, E., Chierchia, S. L., and Margonato, A. Effect of oral L-arginine on blood pressure and symptoms and endothelial function in patients with systemic hypertension,
- Schlaich, M. P., Ahlers, B. A., Parnell, M. M., and Kaye, D. M. beta-Adrenoceptor-mediated, nitric-oxide-dependent vasodilatation is abnormal in early hypertension: restoration by L-arginine. J Hypertens. 2004;22(10):1917-1925. PubMed
- Neri, I., Blasi, I., and Facchinetti, F. Effects of acute L-arginine infusion on non-stress test in hypertensive pregnant women. J Matern.Fetal Neonatal Med. 2004;16(1):23-26. PubMed
- Rytlewski, K., Olszanecki, R., Korbut, R., and Zdebski, Z. Effects of prolonged oral supplementation with l-arginine on blood pressure and nitric oxide synthesis in preeclampsia. Eur.J Clin.Invest 2005;35(1):32-37.
- Mansoor, J. K., Morrissey, B. M., Walby, W. F., Yoneda, K. Y., Juarez, M., Kajekar, R., Severinghaus, J. W., Eldridge, M. W., and Schelegle, E. S. L-arginine supplementation enhances exhaled NO, breath condensate VEGF, and headache at 4,342 m. High Alt.M
- Neri, I., Jasonni, V. M., Gori, G. F., Blasi, I., and Facchinetti, F. Effect of L-arginine on blood pressure in pregnancy-induced hypertension: a randomized placebo-controlled trial. J Matern.Fetal Neonatal Med. 2006;19(5):277-281.
- Lucotti, P., Setola, E., Monti, L. D., Galluccio, E., Costa, S., Sandoli, E. P., Fermo, I., Rabaiotti, G., Gatti, R., and Piatti, P. Beneficial effects of a long-term oral L-arginine treatment added to a hypocaloric diet and exercise training program in
- Savoye, G., Jemaa, Y., Mosni, G., Savoye-Collet, C., Morcamp, P., Dechelotte, P., Bouin, M., Denis, P., and Ducrotte, P. Effects of intragastric L-arginine administration on proximal stomach tone under basal conditions and after an intragastric diet. Dig PubMed
- Facchinetti, F., Saade, G. R., Neri, I., Pizzi, C., Longo, M., and Volpe, A. L-arginine supplementation in patients with gestational hypertension: a pilot study. Hypertens.Pregnancy. 2007;26(1):121-130. PubMed
- Jovanovic, A., Gerrard, J., and Taylor, R. The second-meal phenomenon in type 2 diabetes. Diabetes Care 2009;32(7):1199-1201. PubMed
- Fontanive P, Saponati G, Iurato A, et al. Effects of L-arginine on the Minnesota Living with Heart Failure Questionnaire quality-of-life score in patients with chronic systolic heart failure. Med.Sci.Monit. 2009;15:CR606-11.
- Doutreleau, S., Rouyer, O., Di, Marco P., Lonsdorfer, E., Richard, R., Piquard, F., and Geny, B. L-arginine supplementation improves exercise capacity after a heart transplant. Am J Clin.Nutr. 2010;91(5):1261-1267. PubMed
- Ast, J., Jablecka, A., Bogdanski, P., Smolarek, I., Krauss, H., and Chmara, E. Evaluation of the antihypertensive effect of L-arginine supplementation in patients with mild hypertension assessed with ambulatory blood pressure monitoring. Med.Sci.Monit. 2
- Saleh, A. I., Abdel Maksoud, S. M., El-Maraghy, S. A., and Gad, M. Z. Protective effect of L-arginine in experimentally induced myocardial ischemia: comparison with aspirin. J Cardiovasc.Pharmacol.Ther 2011;16(1):53-62. PubMed
- Dong, J. Y., Qin, L. Q., Zhang, Z., Zhao, Y., Wang, J., Arigoni, F., and Zhang, W. Effect of oral L-arginine supplementation on blood pressure: a meta-analysis of randomized, double-blind, placebo-controlled trials. Am.Heart J 2011;162(6):959-965. PubMed
- Hertz, P. and Richardson, J. A. Arginine-induced hyperkalemia in renal failure patients. Arch.Intern.Med. 1972;130(5):778-780. DOI
- Bushinsky, D. A. and Gennari, F. J. Life-threatening hyperkalemia induced by arginine. Ann.Intern.Med. 1978;89(5 Pt 1):632-634. PubMed
- Adams, M. R., Forsyth, C. J., Jessup, W., Robinson, J., and Celermajer, D. S. Oral L-arginine inhibits platelet aggregation but does not enhance endothelium-dependent dilation in healthy young men. J Am Coll.Cardiol 1995;26(4):1054-1061. PubMed
- Dell'Omo, G., Catapano, G., Ebel, M., Gazzano, A., Ducci, M., Del, Chicca M., Clerico, A., and Pedrinelli, R. [Pressor, renal and endocrine effects of systemic infusion of L-arginine in hypertensive patients]. Ann.Ital Med.Int. 1995;10(2):107-112.
- Higashi, Y., Oshima, T., Ozono, R., Watanabe, M., Matsuura, H., and Kajiyama, G. Effects of L-arginine infusion on renal hemodynamics in patients with mild essential hypertension. Hypertension 1995;25(4 Pt 2):898-902.
- Bode-Boger, S. M., Boger, R. H., Creutzig, A., Tsikas, D., Gutzki, F. M., Alexander, K., and Frolich, J. C. L-arginine infusion decreases peripheral arterial resistance and inhibits platelet aggregation in healthy subjects. Clin.Sci.(Lond) 1994;87(3):303
- Marfella, R., Acampora, R., Verrazzo, G., Ziccardi, P., De, Rosa N., Giunta, R., and Giugliano, D. Metformin improves hemodynamic and rheological responses to L-arginine in NIDDM patients. Diabetes Care 1996;19(9):934-939. PubMed
- Giugliano, D., Marfella, R., Verrazzo, G., Acampora, R., Coppola, L., Cozzolino, D., and D'Onofrio, F. The vascular effects of L-Arginine in humans. The role of endogenous insulin. J Clin.Invest 2-1-1997;99(3):433-438. PubMed
- Khan, F., Litchfield, S. J., McLaren, M., Veale, D. J., Littleford, R. C., and Belch, J. J. Oral L-arginine supplementation and cutaneous vascular responses in patients with primary Raynaud's phenomenon. Arthritis Rheum. 1997;40(2):352-357.
- Wolf, A., Zalpour, C., Theilmeier, G., Wang, B. Y., Ma, A., Anderson, B., Tsao, P. S., and Cooke, J. P. Dietary L-arginine supplementation normalizes platelet aggregation in hypercholesterolemic humans. J Am Coll.Cardiol 3-1-1997;29(3):479-485. PubMed
- Schellong, S. M., Boger, R. H., Burchert, W., Bode-Boger, S. M., Galland, A., Frolich, J. C., Hundeshagen, H., and Alexander, K. Dose-related effect of intravenous L-arginine on muscular blood flow of the calf in patients with peripheral vascular disease
- Marietta, M., Facchinetti, F., Neri, I., Piccinini, F., Volpe, A., and Torelli, G. L-arginine infusion decreases platelet aggregation through an intraplatelet nitric oxide release. Thromb.Res 10-15-1997;88(2):229-235. PubMed
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