L-Lysine 500 mg Ingredients & Drug Interactions
by Viva Vitamins
What is this page for?
First and foremost: checking L-Lysine 500 mg against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.
Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy
L-Lysine 500 mg is a dietary supplement by Viva Vitamins with 1 active ingredient. Its ingredients are commonly taken for cold sores (herpes labialis), genital herpes outbreaks, supporting protein and collagen formation.Based on those ingredients, 1 medication has a known interaction with it, the most serious rated minor. The ingredients most likely to interact are L-Lysine. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against L-Lysine 500 mg by Viva Vitamins
Ask about any prescription or over-the-counter medication and we check it for interactions with L-Lysine 500 mg by Viva Vitamins — 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 L-Lysine 500 mg by Viva Vitamins
Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.
What’s inside
Full disclosure
This supplement contains one active ingredient: L-lysine, an amino acid (a building block your body uses to make proteins). Each tablet or pill delivers 500 mg.
The product also contains inactive ingredients — cellulose, vegetable stearin, cellulose gum, magnesium stearate, and silica — which help form and stabilize the tablet.
Does it work?
Moderate evidence
L-lysine is possibly effective for cold sores (herpes labialis). The evidence we hold doesn't establish how well it works for supporting child growth, healing pressure ulcers, or treating diabetic foot ulcers — there isn't enough reliable data to rate it for those uses.
How safe is it?
Well-documented data
Lysine is generally well tolerated at typical doses. High amounts may cause stomach upset, abdominal pain, diarrhea, or indigestion — and long-term safety at high doses hasn't been well studied.
If you're pregnant, lysine from food is fine, but supplement safety during pregnancy isn't well studied; talk with your doctor before starting. There isn't enough reliable information on supplement use while breastfeeding, so caution is advised — discuss it with your pharmacist or doctor.
Meds to double-check
Minor interactions only
If you take a 5-HT4 agonist (a medication for certain digestive disorders), double-check with your doctor or pharmacist before adding this supplement — lysine may reduce its effectiveness.
The bottom line
Scorecard at a glanceFully disclosed formula with some supporting evidence for its stated purpose. Only minor medication interactions are documented, and safety information is well characterized.
This product may help with cold sores if you're looking for an amino acid supplement. If you take a 5-HT4 agonist for a gut condition, clear it with your doctor or pharmacist first.
Pregnant or breastfeeding? Check with your doctor before starting — the safety data we have is limited.
For personalized advice about whether it's right for you, talk it over with your own healthcare provider.
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 Nov 25, 2011.
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 L-Lysine 500 mg, straight from the product label.
| Brand | Viva Vitamins |
|---|---|
| Barcode (UPC) | 812720015680 |
| Net contents | 250 Tablet(s) |
| Market status | On market |
| Date entered into DSLD | Nov 25, 2011 |
| DSLD ID | 1758 |
| Product type | Amino Acid/protein |
| Supplement form | Tablet Or Pill |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years) |
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-Lysine 500 mg by Viva Vitamins, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| L-Lysine | 500 mg | -- |
Other ingredients: Cellulose, Vegetable Stearin, Cellulose Gum, Magnesium Stearate, Silica
Tap any ingredient to jump to its full detail below.
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
FDA Statement of Identity
dietary supplement
Suggested/Recommended/Usage/Directions
Directions: As a dietary supplement, take one (1) tablet, two (2) times daily. For extra skin support during stressful times, take two (2) tablets, three (3) times daily, or as directed by a health care professional.
Precautions
KEEP OUT OF THE REACH OF CHILDREN.
DO NOT USE IF SAFETY SEAL UNDER CAP IS BROKEN OR MISSING.
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.
Storage
Store in a cool, dry place. Do not refrigerate. Please recycle.
General Statements
500 MG
FITNESS
GMP Compliant Manufacturing
Lysine is required for collagen synthesis (which benefits the skin). It also plays a role in immune function, and may be important to bone health.†
MADE IN THE USA
Our L-Lysine is a pure crystalline, free form amino acid.
Supports Immune Function & Collagen Synthesis/Skin Health†
Brand IP Statement(s)
Viva Vitamins(TM) fully guarantees the potency of this product through:
Formulation
Contains No: Gluten, sugar, salt, yeast, corn, wheat, lactose, citrus, milk, egg, fish products, artificial coloring, flavoring, or preservatives.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
L-Lysine 500 mg by Viva Vitamins 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 L-Lysine 500 mg by Viva Vitamins
This is the 1 active ingredient this product is made of. Select it to open its full monograph.
Serving size1 Tablet(s) Dosage formTablet Or Pill Servings per container250 Amounts shown are per serving.
L-Lysine
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 monograph & interactionsOther (inactive) ingredients: Cellulose, Vegetable Stearin, Cellulose Gum, Magnesium Stearate, Silica. These complete the product’s ingredient list but are not active constituents.
L-Lysine 500 mg by Viva Vitamins Drug Interactions
HelloPharmacist Interaction Report
Viva Vitamins L-Lysine 500 mg has one documented interaction — through its L-lysine content with 5-HT4 agonists, a class of medications used for certain gut disorders.
The interaction is Minor in severity: lysine may reduce how well these drugs work.
Read the full breakdown — every affected drug type, severity by severity
Animal research suggests that L-lysine acts as a partial blocker of serotonin receptor 4 (5-HT4), and it appears to counteract the effects of 5-HT4 agonists. If you take a medication in this class, check with your doctor or pharmacist before adding this supplement.
Almogether, these interactions span 1 individual medication. Use the search tool on this page to verify your exact medications.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against L-Lysine 500 mg?
Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.
Go to the checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in L-Lysine 500 mg interact with 1 drug. Click any drug to see the details.
1 of the 1 ingredient in L-Lysine 500 mg interact with drugs. Each result below shows which ingredient is responsible. L-Lysine
TegaserodZelnorm
How Tegaserod interacts with L-Lysine 500 mg — through 1 ingredient. Tap an ingredient for the detail:
L-lysine5-ht4 Agonists Minor
Interaction Summary
Theoretically, lysine may reduce the effects of 5-HT4 agonists.
Read the full L-lysine + Tegaserod interactionEach ingredient & the kinds of drugs it affects
For each ingredient in L-Lysine 500 mg with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.
L-Lysine
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.
Brand information
Manufacturer and brand details for L-Lysine 500 mg, from the product label.
Viva Vitamins
- Web Address
- www.vivavitamins.com
L-Lysine 500 mg by Viva Vitamins: Common Questions
Does L-Lysine 500 mg by Viva Vitamins interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Does L-lysine really help with cold sores?
Can I take this if I'm pregnant?
What are the side effects?
Can I breastfeed while taking this?
What's in this supplement besides L-lysine?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if L-Lysine 500 mg is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.
The Full Monographs Behind L-Lysine 500 mg’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
L-Lysine 500 mg's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.
The 7 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.
Lysine 7 references
- Thein DJ, Hurt WC. Lysine as a prophylactic agent in the treatment of recurrent herpes simplex labialis. Oral Surg Oral Med Oral Pathol 1984;58:659-66. PubMed
- McCune MA, Perry HO, Muller SA, O'Fallon WM. Treatment of recurrent herpes simplex infections with L-lysine monohydrochloride. Cutis 1984;34:366-73.
- DiGiovanna JJ, Blank H. Failure of lysine in frequently recurrent herpes simplex infection. Treatment and prophylaxis. Arch Dermatol 1984;120:48-51. DOI
- Milman N, Scheibel J, Jessen O. Lysine prophylaxis in recurrent herpes simplex labialis: a double-blind, controlled crossover study. Acta Derm Venereol 1980;60:85-7.
- Griffith RS, Walsh DE, Myrmel KH, et al. Success of L-lysine therapy in frequently recurrent herpes simplex infection. Treatment and prophylaxis. Dermatologica 1987;175:183-90. DOI
- Lo JC, Chertow GM, Rennke H, Seifter JL. Fanconi's syndrome and tubulointerstitial nephritis in association with L-lysine ingestion. Am J Kidney Dis 1996;28:614-7. PubMed
- Smriga M, Torii K. L-Lysine acts like a partial serotonin receptor 4 antagonist and inhibits serotonin-mediated intestinal pathologies and anxiety in rats. Proc Natl Acad Sci U S A. 2003 Dec 23;100(26):15370-5.
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