Lysine + Botulinum Toxin Type A
Botulinum Toxin Type A brand name: Botox.
We found no known interaction between Lysine and Botulinum Toxin Type A in our sources. Absence of a documented interaction is not the same as proven safety, and does not guarantee one does not exist. Do not start, stop, or change a medication or supplement based on this page; confirm with your pharmacist or doctor first.
Lysine and Botulinum Toxin Type A
We checked these two against our interaction database. Here is what we found.
No Known Interaction Found
We did not find a documented interaction between Botulinum Toxin Type A and Lysine in our sources. This does not guarantee that the combination is completely free of risk — there is often limited research on supplements and herbal products, especially around drug interactions.
If you decide to take both, the practical routine is simple: add one new thing at a time and note the date you started it. If the combination is going to disagree with you, it usually shows in the first days to a couple of weeks — and a start date turns “I’ve been feeling off” into something a pharmacist can actually work with. Do not stop a prescribed medicine on your own.
Always talk with your pharmacist or doctor before making changes to your medications or supplements, particularly if you take several medications or have an ongoing health condition.
Lysine safety at a glance
Safety guidance is general; always confirm with your pharmacist or doctor for your situation.
Lysine Does Interact With Other Medications
Lysine has 1 minor known drug interaction in our database — Botulinum Toxin Type A isn’t one of them. If you take anything else, check it against the full list below.
Check Another of Your Medications Against Lysine
We haven’t checked that one against Lysine yet — ask our pharmacists directly.
Covers the 2,830 medications we’ve checked against Lysine. Pick one to open its full report.
Questions About Lysine or Botulinum Toxin Type A
These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Lysine or Botulinum Toxin Type A, not necessarily both, but if one is close to what you were about to ask it will usually go further than a database entry can:
Not quite your question? Ask our pharmacists directly — it is free, there is no account required, and answers usually come back within 24 hours.
Taking Lysine as Part of a Dietary Supplement Product? Check It for Interactions
We hold 3,540 real supplement products containing Lysine, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Lysine. Even though Lysine itself has no known interaction with Botulinum Toxin Type A, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:
Where Lysine and Botulinum Toxin Type A Sit Against Everything Else
Out of every supplement and medication people look up on HelloPharmacist, here is where these two land this week — and which way each has been moving.
#67 of 1,452 supplements looked up here in the last 7 days
#390 of 2,830 medications looked up here in the last 7 days
Position among everything looked up on this site, not a measure of how commonly either one is used or how important it is. A supplement can climb this list because of a news story. It counts every request to the page, automated ones included, and nothing here identifies anyone.
Where does our data come from?
- Source: the Natural Medicines (TRC Healthcare) clinical database — the evidence-graded professional reference for herb & supplement interactions.
- Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Lysine reference on this page ↓
- Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Lysine and Botulinum Toxin Type A records this page draws on were last updated July 10, 2026.
- What “no known interaction” means: no documented interaction in the sources above — not a guarantee of safety. Supplements are studied far less than prescription drugs, so we say exactly what the evidence supports, and nothing more.
About Lysine
What is Lysine?
- Cold sores (herpes labialis)
- Genital herpes outbreaks
- Supporting protein and collagen formation
- Calcium absorption support
- General nutritional supplement
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 try to prevent or shorten cold sores, but the evidence is mixed and far from conclusive. For most healthy people who eat enough protein, supplements are likely unnecessary, but they are generally considered low-risk at typical doses.
Amino acid (L-lysine) · Tablets, capsules, powder, topical creams (often combined with other ingredients)
An interaction check asks whether these two react with each other — it does not ask whether Lysine is a good idea for someone in your situation. Here is what our Lysine record says about it on its own.
Lysine: dosing
There is no single official supplement dose of lysine for any health condition, and a truly standardized dose has not been established for uses like cold sores. Products vary widely in how much they contain.The best approach is to follow the directions on the product label and not exceed the recommended amount.
From our Lysine monograph — the full record covers uses, side effects and every documented interaction.
About OnabotulinumtoxinA Injection
What Is OnabotulinumtoxinA Injection Used For?
Brand name: Botox
Botox is approved to treat a wide range of conditions in adults and some children. These include overactive bladder (OAB) with urge incontinence, urinary incontinence caused by nerve-related bladder overactivity (in adults and in children aged 5 and older), prevention of headaches in adults with chronic migraine (15 or more headache days per month), muscle stiffness (spasticity) in patients aged 2 and older, cervical dystonia (abnormal head position and neck pain), severe underarm sweating (primary axillary hyperhidrosis) when topical treatments haven't worked, eyelid spasms (blepharospasm) in patients aged 12 and older, and crossed eyes (strabismus) in patients aged 12 and older.
BOTOX Cosmetic is a separate product containing the same active ingredient but with its own approved cosmetic uses. Both products are given by injection and are not interchangeable with other botulinum toxin products. Botox has not been shown to work for episodic migraine (14 or fewer headache days per month), and its safety for excessive sweating in body areas other than the underarms has not been established.
Most-Reported Side Effects for Botulinum Toxin Type A
From FAERS, the FDA’s public side-effect reporting system (12,344 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.
Other Drugs & Lysine
Browse every other medication we’ve checked against Lysine — both the ones with a known interaction and the ones without. Select any drug for the full detail.
No drugs match “”.
1 interaction
No interaction 2,828 drugs checked — show the list
We also checked Lysine against these medications and found no known interaction in our sources. Open any page to confirm.
- Apixaban ›
- Levothyroxine ›
- Amlodipine ›
- Warfarin ›
- Methylphenidate ›
- Sertraline ›
- Losartan Potassium ›
- Testosterone ›
- Ivermectin ›
- Metoprolol ›
- Aspirin ›
- Acetaminophen ›
- Abemaciclib ›
- Rivaroxaban ›
- Rosuvastatin ›
- Escitalopram ›
- Clopidogrel ›
- Atorvastatin ›
- Tadalafil ›
- Docusate ›
- Tirzepatide ›
- Ibuprofen ›
- Hydroxyurea ›
- Methamphetamine ›
- Valacyclovir ›
- Warfarin Sodium ›
- Semaglutide ›
- Sumatriptan ›
- Prednisone ›
- Lisdexamfetamine ›
- Propranolol ›
- Metformin ›
- Lisinopril ›
- Amoxicillin ›
- Amitriptyline ›
- Methotrexate ›
- Bupropion ›
- Isotretinoin ›
- Bendamustine ›
- Amlodipine Besylate ›
- Amphetamine ›
- Fluoxetine ›
- Doxycycline ›
- Acyclovir ›
- Azithromycin ›
- Pregabalin ›
- Lamotrigine ›
- Gabapentin ›
- Dextroamphetamine ›
- Acetaminophen, Codeine ›
- Quetiapine ›
- Clonazepam ›
- Methylene Blue ›
- Omeprazole ›
- Naproxen ›
- Letrozole ›
- Duloxetine ›
- Buspirone ›
- Citalopram ›
- Ciprofloxacin ›
Showing the 60 most looked-up of 2,828 medications checked with no known interaction — see the full Lysine list.
Lysine References
The 7 references that drive our Lysine monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.
- 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.
Medication overviews come from MedlinePlus (NIH); supplement label data from the NIH Dietary Supplement Label Database. Content is written and reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.
Taking Lysine and Botulinum Toxin Type A Together: Common Questions
Is it safe to take Lysine with Botulinum Toxin Type A?
Does Lysine interact with any other medications?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
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This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.