L-Lysine 1000 mg Ingredients & Drug Interactions
by Viva Vitamins
What is this page for?
First and foremost: checking L-Lysine 1000 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 1000 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 1000 mg by Viva Vitamins
Ask about any prescription or over-the-counter medication and we check it for interactions with L-Lysine 1000 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
Ask the Pharmacist
A licensed pharmacist will answer your question by email — free, usually within 24 hours.
Got it — thank you!
A licensed pharmacist will answer within 24 hours. Keep an eye on your email (worth checking spam, just in case).
HelloPharmacist Scorecard of L-Lysine 1000 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
L-Lysine 1000 mg by Viva Vitamins contains one active ingredient: L-lysine, an amino acid (a building block of protein) that your body can obtain from food or supplements. The tablet also contains inactive ingredients — cellulose, stearin, cellulose gum, magnesium stearate, and silica — which are fillers and binders that help form and preserve the tablet.
Does it work?
Moderate evidence
L-lysine is possibly effective for herpes labialis (cold sores) according to the evidence we hold. For other uses listed — child growth, pressure ulcers, and diabetic foot ulcers — there isn't enough reliable evidence to rate its effectiveness.
If you're considering this supplement for cold sores, talk it over with your doctor or pharmacist about whether it makes sense for your situation.
How safe is it?
Well-documented data
L-lysine is generally well tolerated at typical doses. The most common side effects from oral use are abdominal pain, diarrhea, and indigestion.
High amounts may cause stomach upset, and long-term safety hasn't been thoroughly studied. Safety data for L-lysine supplements in pregnancy and breastfeeding is not well studied.
Lysine from food is fine, but if you're pregnant or nursing and considering a supplement, there isn't enough reliable information to know either way — check with your doctor or pharmacist for personalized guidance. There is one case report of oral lysine linked to kidney inflammation and chronic kidney damage, though this is rare.
Meds to double-check
Minor interactions only
If you take a 5-HT4 agonist (a medication that helps with certain digestive or motility problems), check with your doctor or pharmacist before adding this supplement — lysine may reduce its effect. No other interactions are documented for the ingredients we could check in this product.
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.
L-lysine may be worth trying if you get frequent cold sores and want to explore a possibly effective natural option. If you take a 5-HT4 agonist or any other medications, verify them with your doctor or pharmacist before starting.
Pregnant or nursing? Talk it over with your healthcare provider first, since supplement safety data isn't established.
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 Sep 25, 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 L-Lysine 1000 mg, straight from the product label.
| Brand | Viva Vitamins |
|---|---|
| Barcode (UPC) | 812720015697 |
| Net contents | 100 Tablet(s) |
| Market status | On market |
| Date entered into DSLD | Sep 25, 2024 |
| DSLD ID | 316307 |
| Product type | Amino Acid/protein |
| Supplement form | Tablet Or Pill |
| Dietary claims / uses | Nutrient, All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years), 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 L-Lysine 1000 mg by Viva Vitamins, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| L-Lysine | 1000 mg | -- |
Other ingredients: Cellulose, 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.
Suggested/Recommended/Usage/Directions
Directions: As a dietary supplement, take one (1) tablet daily. For extra skin support during these stressful times, take one (1) tablet, three (3) times daily, or as directed by a health care professional.
Formula
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.
Free Form Amino Acid
Our L-Lysine is a pure crystalline, free form amino acid.
Storage
Store in a cool dry place. Do not refrigerate.
General Statements
Please Recycle
For more information visit www.vivavitamins.com In God We Trust
Precautions
Do not use if safety seal under cap is broken or missing.
Keep out of reach of children.
FDA Disclaimer Statement
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Brand IP Statement(s)
Copyright 2013
Formulation
Made in the USA GMP Compliant Manufacturing
Supports immune function & collagen synthesis/skin health
Contains No: Gluten, sugar, salt, yeast, corn, wheat, lactose, citrus, milk, egg, fish products, artificial coloring, flavoring or preservatives.
FDA Statement of Identity
Dietary Supplement
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
L-Lysine 1000 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 1000 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 container100 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, Stearin, Cellulose Gum, Magnesium Stearate, Silica. These complete the product’s ingredient list but are not active constituents.
L-Lysine 1000 mg by Viva Vitamins Drug Interactions
HelloPharmacist Interaction Report
Viva Vitamins L-Lysine 1000 mg has one documented interaction — with 5-HT4 agonists, a drug class used to treat certain digestive and motility issues.
L-lysine may theoretically reduce how well these medications work, based on animal research showing it can block serotonin receptor 4 activity.
Read the full breakdown — every affected drug type, severity by severity
The interaction is rated Minor, meaning the effect is unlikely to be clinically significant for most people, but it's worth knowing about. If you take a 5-HT4 agonist, mention this supplement to your doctor or pharmacist before starting.
Additionally, we could not check several other ingredients in this product for interactions. Use the medication checker below to verify your exact prescriptions against this product's content.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against L-Lysine 1000 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 1000 mg interact with 1 drug. Click any drug to see the details.
1 of the 1 ingredient in L-Lysine 1000 mg interact with drugs. Each result below shows which ingredient is responsible. L-Lysine
TegaserodZelnorm
How Tegaserod interacts with L-Lysine 1000 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 1000 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 1000 mg, from the product label.
Viva Vitamins
- Name
- Viva Vitamins
- Street Address
- 25908 McBean Pkwy
- City
- Valencia
- State
- CA
- ZipCode
- 91355
- Web Address
- www.vivavitamins.com
L-Lysine 1000 mg by Viva Vitamins: Common Questions
Does L-Lysine 1000 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 cold sores?
What are the most common side effects?
Is it safe to take while pregnant?
Can I take it while breastfeeding?
How long does L-lysine take to work on cold sores?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if L-Lysine 1000 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 1000 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 1000 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