Arginine Plus Ingredients & Drug Interactions
by Metagenics
What is this page for?
First and foremost: checking Arginine Plus 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
Arginine Plus is a dietary supplement by Metagenics with 3 active ingredients. Its ingredients are commonly taken for sleep quality and insomnia, relaxation, cognitive function.Based on those ingredients, 404 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are L-Arginine, Glycine. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Arginine Plus by Metagenics
Ask about any prescription or over-the-counter medication and we check it for interactions with Arginine Plus by Metagenics — 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 Arginine Plus by Metagenics
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
Arginine Plus contains three active ingredients. The product has 3 active ingredients: glycine, L-arginine, and folate.
Glycine is an amino acid that may support certain neurological conditions. L-arginine is another amino acid that works in your body to produce nitric oxide, a signaling molecule that affects blood vessel function and blood pressure.
Folate is a B vitamin. The tablet also contains several inactive ingredients — microcrystalline cellulose, cellulose, stearic acid, silica, calcium silicate, croscarmellose sodium, and a coating — that serve as binders, fillers, and to hold the tablet together.
Does it work?
Not established
In our data, glycine carries a rating of possibly effective for schizophrenia, but evidence for its use in 3-phosphoglycerate dehydrogenase (3-PGDH) deficiency, ADHD, benign prostatic hyperplasia (BPH), and cystic fibrosis is insufficient to rate. L-arginine and folate do not have established effectiveness ratings in the data we hold, so we cannot speak to how well they work for any particular use.
How safe is it?
Well-documented data
Glycine is generally well tolerated at typical doses, though long-term safety data are limited. Rarely, it may cause mild sedation, irritability, insomnia, fatigue, memory problems, headache, soft stools, nausea, vomiting, or upper GI discomfort; these symptoms resolve quickly if you stop taking it.
L-arginine is generally well tolerated short-term but can lower blood pressure and may not be safe for everyone — it should be used only under medical supervision. Oral L-arginine most commonly causes abdominal pain, bloating, nausea, diarrhea, headache, insomnia, and flushing.
When inhaled, L-arginine can trigger airway inflammation, though oral use in asthma patients hasn't shown airway problems in studies. For pregnancy, L-arginine is rated possibly safe; for lactation and pregnancy/lactation safety of glycine and folate, there isn't enough reliable data on file — talk with your doctor or pharmacist for personalized guidance.
Meds to double-check
Moderate interaction found
Before taking Arginine Plus, double-check with your pharmacist or doctor if you're on any blood pressure medications (Moderate risk), ACE inhibitors or ARBs (Moderate), blood thinners or antiplatelet drugs (Moderate), diabetes medications (Moderate), potassium-sparing diuretics (Moderate), clozapine for schizophrenia (Moderate), isoproterenol (Moderate), or sildenafil (Moderate). These are the main drug classes L-arginine and glycine interact with.
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.
Arginine Plus is a combination supplement you might consider under a doctor's guidance if you're interested in amino acid and B vitamin support. If you take blood pressure medications, diabetes drugs, blood thinners, or any antipsychotic (especially clozapine), or if you use sildenafil, you need to check your exact medications with the tool on this page first.
Talk to your pharmacist or doctor before starting — L-arginine's blood-pressure effects mean it's not a self-care product for everyone.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 2 of 3 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated May 19, 2022.
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 Arginine Plus, straight from the product label.
| Brand | Metagenics |
|---|---|
| Net contents | 120 Tablet(s) |
| Market status | On market |
| Date entered into DSLD | May 19, 2022 |
| DSLD ID | 266555 |
| Product type | Other Combinations |
| Supplement form | Tablet Or Pill |
| Dietary claims / uses | Nutrient, All Other, Structure/Function |
| Intended target group(s) | Vegetarian, 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 Arginine Plus by Metagenics, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Glycine | 10 mg | -- |
| L-Arginine | 1.5 Gram(s) | -- |
| Folate | 400 mcg | 100% |
Other ingredients: Microcrystalline Cellulose, Cellulose, Stearic Acid, Silica, Calcium Silicate, Croscarmellose Sodium, Coating
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.
Formula
Arginine Plus delivers high quality L-arginine with calcium L-5-methyltetrahydrofolate - a body-ready form of folate - to support healthy blood flow, homocysteine levels, and overall cardiovascular health. Providing L-5-methyltetrahydrofolate helps to ensure improved folate nutrition, even in those with genetic variations in folate metabolism.
Suggested/Recommended/Usage/Directions
Directions: Take two tablets two times daily or as directed by your healthcare practitioner.
Formulation
This product is non-GMO, gluten-free, and vegetarian. GF Certified Gluten-free
This product is non-GMO, gluten-free, and vegetarian.
Support for healthy cardiovascular function
Precautions
Warning: Do not use if pregnant or nursing. Caution: If taking medications consult your healthcare practitioner before use.
If you have had a myocardial infarction (heart attack) or have history of renal (kidney) impairment, consult your cardiologist or physician before use.
Keep out of the reach of children.
Practitioner exclusive
Storage
Storage: Keep tightly closed in a cool, dry place. Do not refrigerate.
Seals/Symbols
GF Certified Gluten-free
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.
FDA Statement of Identity
Dietary Supplement
Brand IP Statement(s)
As Metafolin, a registered trademark of Merck KGaA, Darmstadt, Germany U.S. Patent Nos. 5,997,915; 6,254,904.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Arginine Plus by Metagenics 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 Arginine Plus by Metagenics
These are the 3 active ingredients this product is made of. Select any to open its full monograph.
Serving size2 Tablet(s) Dosage formTablet Or Pill Servings per container60 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.
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...
Glycine monograph & interactionsL-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 & interactionsFolate
Other (inactive) ingredients: Microcrystalline Cellulose, Cellulose, Stearic Acid, Silica, Calcium Silicate, Croscarmellose Sodium, Coating. These complete the product’s ingredient list but are not active constituents.
Arginine Plus by Metagenics Drug Interactions
HelloPharmacist Interaction Report
Arginine Plus by Metagenics contains two active ingredients with documented drug interactions.
L-arginine is responsible for the most serious concerns: it may lower blood pressure when combined with antihypertensive drugs, ACE inhibitors (ACEIs), angiotensin receptor blockers (ARBs), or isoproterenol — all Moderate severity interactions. L-arginine also theoretically increases bleeding risk with blood thinners and antiplatelet drugs (Moderate), raises potassium levels when used with potassium-sparing diuretics or ACE inhibitors and ARBs (Moderate), and may intensify the blood-sugar-lowering effects of diabetes medications (Moderate).
Additionally, L-arginine combined with sildenafil (Viagra) carries a Moderate risk of low blood pressure. Glycine may decrease the effectiveness of clozapine (Clozaril), an antipsychotic medication, though the mechanism isn't fully understood (Moderate).
We could not check folate for interactions — no data is on file for that ingredient. Altogether, these interactions span 401 individual medications.
Use the medication checker below to search your exact prescriptions before starting.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Arginine Plus?
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 Arginine Plus interact with 404 drugs. Click any drug to see the details.
2 of the 3 ingredients in Arginine Plus interact with drugs. Each result below shows which ingredient is responsible. L-Arginine Glycine
AbciximabReoPro
How Abciximab interacts with Arginine Plus — 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 + Abciximab interactionAbrocitinibCibinqo
How Abrocitinib interacts with Arginine Plus — 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 + Abrocitinib interactionAcarboseGlucobay, Prandase, Precose
How Acarbose interacts with Arginine Plus — through 1 ingredient. 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 + Acarbose interactionAcebutololRhotral, Sectral
How Acebutolol interacts with Arginine Plus — through 1 ingredient. 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 + Acebutolol interactionAcenocoumarolSintrom
How Acenocoumarol interacts with Arginine Plus — 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 + Acenocoumarol interactionAcetaminophen, AspirinGemnisyn
How Acetaminophen, Aspirin interacts with Arginine Plus — 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 + Acetaminophen, Aspirin interactionAcetaminophen, Aspirin, CaffeineExcedrin, Excedrin Extra Strength, Excedrin Migraine
How Acetaminophen, Aspirin, Caffeine interacts with Arginine Plus — 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 + Acetaminophen, Aspirin, Caffeine interactionAcetaminophen, IbuprofenCombogesic
How Acetaminophen, Ibuprofen interacts with Arginine Plus — 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 + Acetaminophen, Ibuprofen interactionAcetazolamideAk-Zol, Diamox
How Acetazolamide interacts with Arginine Plus — through 1 ingredient. 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 + Acetazolamide interactionAcetohexamideDymelor
How Acetohexamide interacts with Arginine Plus — through 1 ingredient. 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 + Acetohexamide interactionAcetylsalicylic AcidEntrophen
How Acetylsalicylic Acid interacts with Arginine Plus — 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 + Acetylsalicylic Acid interactionAlbiglutideTanzeum
How Albiglutide interacts with Arginine Plus — through 1 ingredient. 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 + Albiglutide interactionAliskirenTekturna
How Aliskiren interacts with Arginine Plus — through 1 ingredient. 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 + Aliskiren interactionAlogliptinNesina
How Alogliptin interacts with Arginine Plus — through 1 ingredient. 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 + Alogliptin interactionAlogliptin, MetforminKazano
How Alogliptin, Metformin interacts with Arginine Plus — through 1 ingredient. 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 + Alogliptin, Metformin interactionAlogliptin, PioglitazoneOseni
How Alogliptin, Pioglitazone interacts with Arginine Plus — through 1 ingredient. 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 + Alogliptin, Pioglitazone interactionAlteplase, TpaActilyse, Activase
How Alteplase, Tpa interacts with Arginine Plus — 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 + Alteplase, Tpa interactionAluminum Hydroxide, Aspirin, Codeine Phosphate, Magnesium HydroxideAscriptin Codeine #2
How Aluminum Hydroxide, Aspirin, Codeine Phosphate, Magnesium Hydroxide interacts with Arginine Plus — 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 + Aluminum Hydroxide, Aspirin, Codeine Phosphate, Magnesium Hydroxide interactionAluminum Hydroxide, Aspirin, Magnesium HydroxideAscriptin
How Aluminum Hydroxide, Aspirin, Magnesium Hydroxide interacts with Arginine Plus — 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 + Aluminum Hydroxide, Aspirin, Magnesium Hydroxide interactionAmbrisentanLetairis, Volibris
How Ambrisentan interacts with Arginine Plus — through 1 ingredient. 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 + Ambrisentan interactionAmilorideAmilamont, Midamor
How Amiloride interacts with Arginine Plus — through 1 ingredient. Tap an ingredient for the detail:
L-arginineAntihypertensive Drugs, Potassium-sparing Diuretics Moderate
Interaction Summary
Theoretically, concomitant use of L-arginine and antihypertensive drugs may increase the risk of hypotension.
Read the full L-arginine + Amiloride interactionAmiloride, HydrochlorothiazideAmil-Co, Amilzide, Moduret 25, Moduretic
How Amiloride, Hydrochlorothiazide interacts with Arginine Plus — through 1 ingredient. Tap an ingredient for the detail:
L-arginineAntihypertensive Drugs, Potassium-sparing Diuretics Moderate
Interaction Summary
Theoretically, concomitant use of L-arginine and antihypertensive drugs may increase the risk of hypotension.
Read the full L-arginine + Amiloride, Hydrochlorothiazide interactionAmlodipineNorliqva
How Amlodipine interacts with Arginine Plus — through 1 ingredient. 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 interactionAmlodipine BenzoateKaterzia
How Amlodipine Benzoate interacts with Arginine Plus — through 1 ingredient. 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 Benzoate interactionAmlodipine BesilateIstin
How Amlodipine Besilate interacts with Arginine Plus — through 1 ingredient. 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 interactionAmlodipine BesylateNorvasc
How Amlodipine Besylate interacts with Arginine Plus — through 1 ingredient. 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 Besylate interactionAmlodipine Besylate, BenazeprilLotrel
How Amlodipine Besylate, Benazepril interacts with Arginine Plus — through 1 ingredient. 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 interactionAmlodipine, CelecoxibConsensi
How Amlodipine, Celecoxib interacts with Arginine Plus — through 1 ingredient. 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 interactionAmmonium ChlorideAmmonium Chloride
How Ammonium Chloride interacts with Arginine Plus — through 1 ingredient. 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 + Ammonium Chloride interactionAnacaulase-bcdbNexoBrid
How Anacaulase-bcdb interacts with Arginine Plus — 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 interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Arginine Plus 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.
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 Arginine Plus, from the product label.
Metagenics
See all Metagenics products- Name
- Metagenics
- City
- Gig Harbor
- State
- WA
- ZipCode
- 98332
- Phone Number
- 800 692 9400
- Web Address
- metagenics.com
Arginine Plus by Metagenics: Common Questions
Does Arginine Plus by Metagenics interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
What does L-arginine do in this product?
Can I take this if I'm pregnant or breastfeeding?
What side effects might I experience?
Is this product safe long-term?
Does this product contain any fillers?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Arginine Plus 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 Arginine Plus’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Glycine
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 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 →Sources & How We Checked
Arginine Plus'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 71 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.
Glycine 5 references
- Heresco-Levy U, Javitt DC, Ermilov M, et al. Efficacy of high-dose glycine in the treatment of enduring negative symptoms of schizophrenia. Arch Gen Psychiatry 1999;56:29-36.. PubMed
- Potkin SG, Jin Y, Bunney BG, Costa J, Gulasekaram B. Effect of clozapine and adjunctive high-dose glycine in treatment-resistant schizophrenia. Am J Psychiatry 1999;156:145-7.. PubMed
- Gusev EI, Skvortsova VI, Dambinova SA, et al. Neuroprotective effects of glycine for therapy of acute ischaemic stroke. Cerebrovasc Dis 2000;10:49-60. PubMed
- Inagawa K, Kawai N, Ono K, Sukegawa E, Tsubuku S, Takahashi M. Assessment of acute adverse effects of glycine ingestion at a high dose in human volunteers. Seikatsu Eisei. 2006; 50:27-32.
- Woods SW, Walsh BC, Hawkins KA, Miller TJ, Saksa JR, D'Souza DC, Pearlson GD, Javitt DC, McGlashan TH, Krystal JH. Glycine treatment of the risk syndrome for psychosis: report of two pilot studies. Eur Neuropsychopharmacol. 2013 Aug;23(8):931-40. 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.
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