Lactic Acid + Itraconazole
Itraconazole brand names: Sporanox, Sporanox Injection, Tolsura.
We found no known interaction between Lactic Acid and Itraconazole 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. Additionally, although there is no interaction, the two are separately associated with some of the same side effects, which would make a new symptom harder to attribute to one or the other.
Lactic Acid and Itraconazole
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 Itraconazole and Lactic Acid 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.
Worth understanding: our licensed dataset holds no drug-interaction record for Lactic Acid at all — not against Itraconazole, and not against any other medication we track. This verdict therefore rests on the absence of any recorded data, not on research that looked at this combination and found nothing. We cannot rule an interaction out.
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.
Lactic Acid safety at a glance
Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center) — the full detail is in the Special populations card below. Safety guidance is general; always confirm with your pharmacist or doctor for your situation.
Lactic Acid in Pregnancy & Breastfeeding
When used topically in appropriate concentrations . There is insufficient reliable information available about the safety of lactic acid when used orally during pregnancy and lactation; avoid using.
DISCLAIMER: This tool is intended for informational purposes only, and should not be interpreted as specific medical advice. Patients should consult with a qualified healthcare provider before making decisions about therapies and/or health conditions.© 2026 Therapeutic Research Center
What Itraconazole Is Prescribed For, and What Lactic Acid Has Been Studied For
These two come up together because they touch the same health topic — not because they do the same job. Itraconazole is a prescription medicine with approved uses on its FDA label. Lactic Acid is a supplement: what follows is what researchers have looked at it for, and how strong that evidence is.
Itraconazole is prescribed for: Itraconazole capsules (including Sporanox capsules and generic itraconazole capsules) treat serious fungal infections — blastomycosis, histoplasmosis, and aspergillosis — in both people with normal immune systems and those who are immunocompromised. Capsule forms are also approved for nail fungus (onychomycosis) caused by dermatophytes in non-immunocompromised patients. Tolsura (a gelatin-coated capsule formulation) treats blastomycosis, histoplasmosis, and aspergillosis in adults, but is not approved for nail fungus and is not interchangeable with other itraconazole products. Itraconazole oral solution is specifically approved for oropharyngeal candidiasis (thrush — a fungal infection of the mouth) and esophageal candidiasis (a fungal infection of the food pipe).
Read the rest of what Itraconazole is prescribed for
Only the oral solution has been shown to work for these mouth and throat infections; capsules cannot be substituted for this use.
Lactic Acid has been studied for:
-
Onychomycosis studied, not established Lactic Acid has been studied for this. Natural Medicines rates the evidence: Insufficient Reliable Evidence To Rate Read what the research shows
Lactic Acid for onychomycosis
Topical lactic acid has only been evaluated in combination with other ingredients; its effect when used alone is unclear.
Effectiveness ratings and the research summaries above are the verbatim record from the Natural Medicines database, which grades evidence from “Effective” down to “Insufficient Reliable Evidence To Rate”. A rating below the top of that scale means researchers have looked at it — not that it works, and never that it can stand in for a prescribed medicine. Do not stop or replace Itraconazole on your own; if you are taking Lactic Acid for the same health topic, tell your prescriber, especially if the medicine is being adjusted to a target.
Questions About Lactic Acid or Itraconazole
These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Lactic Acid or Itraconazole, 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:
- Concerns Taking Itraconazole And Olanzapine Together ›
- Cotellic With Turmeric And Black Pepper Interaction ›
- Interaction Between Paxlovid And Imodium ›
Not quite your question? Ask our pharmacists directly — it is free, there is no account required, and answers usually come back within 24 hours.
See Every Supplement That Interacts With Itraconazole
This page covers Lactic Acid only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Itraconazole page lists 182 supplements it has a documented interaction with, worst first, each one explained.
The most serious there right now: Activated Charcoal (major), Beer (major), Grapefruit (major), Siberian Cocklebur (major) and St. John's Wort (major).
By severity: 6 major · 136 moderate · 40 minor.
From our pharmacist’s overview on the Itraconazole page
“Serious fungal infections are what itraconazole (Sporanox, Tolsura) is for, and the drug travels through CYP3A4, the liver enzyme that also handles a large share of supplements. That overlap is why this list reaches 182 ingredients, and it earns genuine care; start with the six rated major.”
Reviewed by 2 · Jul 18, 2026
Taking Lactic Acid as Part of a Dietary Supplement Product? Check It for Interactions
We hold 22 real supplement products containing Lactic Acid, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Lactic Acid. Even though Lactic Acid itself has no known interaction with Itraconazole, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:
Where Lactic Acid and Itraconazole 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.
#1,016 of 1,452 supplements looked up here in the last 7 days
#1,853 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 Lactic Acid reference on this page ↓
- Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Lactic Acid and Itraconazole 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 Lactic Acid
What is Lactic Acid?
- Skin exfoliation and anti-aging
- Moisturizing dry skin
- Maintaining vaginal pH
- Acne and skin texture
- Ingredient in fermented foods
Lactic acid is a naturally occurring acid made by the body during exercise and by bacteria that ferment milk and other foods. It is most often used on the skin as an exfoliant and moisturizer and in some vaginal products to support normal pH. While topical skin uses are well established, evidence for swallowing lactic acid supplements for health benefits is limited, so check with a pharmacist before using it.
Topical creams and lotions, chemical peels, oral capsules, foods (fermented dairy), suppositories, mouth rinses
An interaction check asks whether these two react with each other — it does not ask whether Lactic Acid is a good idea for someone in your situation. Here is what our Lactic Acid record says about it on its own.
Lactic Acid: dosing
There is no single standard dose of lactic acid, because it is used in so many different ways. Skin products commonly contain a range of concentrations, and professional peels use stronger amounts applied by trained providers.For any product, the best approach is to follow the label directions and start slowly to see how your skin reacts.
From our Lactic Acid monograph — the full record covers uses, side effects and every documented interaction.
About Itraconazole
What Is Itraconazole Used For?
Brand names: Sporanox, Sporanox Injection, Tolsura
Itraconazole capsules (including Sporanox capsules and generic itraconazole capsules) treat serious fungal infections — blastomycosis, histoplasmosis, and aspergillosis — in both people with normal immune systems and those who are immunocompromised. Capsule forms are also approved for nail fungus (onychomycosis) caused by dermatophytes in non-immunocompromised patients. Tolsura (a gelatin-coated capsule formulation) treats blastomycosis, histoplasmosis, and aspergillosis in adults, but is not approved for nail fungus and is not interchangeable with other itraconazole products.
Itraconazole oral solution is specifically approved for oropharyngeal candidiasis (thrush — a fungal infection of the mouth) and esophageal candidiasis (a fungal infection of the food pipe). Only the oral solution has been shown to work for these mouth and throat infections; capsules cannot be substituted for this use.
Most-Reported Side Effects for Itraconazole
From FAERS, the FDA’s public side-effect reporting system (11,613 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.
Other Drugs & Lactic Acid
Browse every other medication we’ve checked against Lactic Acid — both the ones with a known interaction and the ones without. Select any drug for the full detail.
No drugs match “”.
No interaction 2,829 drugs checked — show the list
We also checked Lactic Acid against these medications and found no known interaction in our sources. Open any page to confirm.
- Apixaban ›
- Levothyroxine ›
- Amlodipine ›
- Methylphenidate ›
- Warfarin ›
- Sertraline ›
- Testosterone ›
- Losartan Potassium ›
- Ivermectin ›
- Abemaciclib ›
- Aspirin ›
- Acetaminophen ›
- Metoprolol ›
- Rosuvastatin ›
- Rivaroxaban ›
- Escitalopram ›
- Clopidogrel ›
- Atorvastatin ›
- Tadalafil ›
- Docusate ›
- Tirzepatide ›
- Ibuprofen ›
- Methamphetamine ›
- Hydroxyurea ›
- Warfarin Sodium ›
- Valacyclovir ›
- Sumatriptan ›
- Semaglutide ›
- Prednisone ›
- Lisdexamfetamine ›
- Propranolol ›
- Metformin ›
- Amitriptyline ›
- Amoxicillin ›
- Lisinopril ›
- Isotretinoin ›
- Amlodipine Besylate ›
- Methotrexate ›
- Bendamustine ›
- Bupropion ›
- Amphetamine ›
- Doxycycline ›
- Fluoxetine ›
- Azithromycin ›
- Acyclovir ›
- Lamotrigine ›
- Pregabalin ›
- Dextroamphetamine ›
- Gabapentin ›
- Acetaminophen, Codeine ›
- Quetiapine ›
- Clonazepam ›
- Levothyroxine, Liothyronine ›
- Naproxen ›
- Omeprazole ›
- Letrozole ›
- Methylene Blue ›
- Duloxetine ›
- Buspirone ›
- Citalopram ›
Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Lactic Acid list.
Lactic Acid References
The 21 references that drive our Lactic Acid 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.
- Kempers S, Katz HI, Wildnauer R, Green B. An evaluation of the effect of an alpha hydroxy acid-blend skin cream in the cosmetic improvement of symptoms of moderate to severe xerosis, epidermolytic hyperkeratosis, and ichthyosis. Cutis 1998;61:347-50.
- Stiller MJ, Bartolone J, Stern R, et al. Topical 8% glycolic acid and 8% L-lactic acid creams for the treatment of photodamaged skin. A double-blind, vehicle-controlled clinical trial. Arch Dermatol 1996;132:631-6.
- Wehr R, Krochmal L, Bagatell F, Ragsdale W. A controlled two-center study of lactate 12 percent lotion and a petrolatum-based creme in patients with xerosis. Cutis 1986;37:205-7, 209.
- Kurtzweil P. Alpha-hydroxy acids for skin care: Smooth sailing or rough seas? FDA 1999. Available at: /www.fda.gov/fdac/features/1998/298_ahas.html (Accessed 18 August 2000). DOI
- Emtestam L, Svensson Å, Rensfeldt K. Treatment of seborrhoeic dermatitis of the scalp with a topical solution of urea, lactic acid, and propylene glycol (K301): results of two double-blind, randomised, placebo-controlled studies. Mycoses. 2012 Sep;55(5):3 PubMed
- Köse O, Özmen I, Arca E. An open, comparative study of 10% potassium hydroxide solution versus salicylic and lactic acid combination in the treatment of molluscum contagiosum in children. J Dermatolog Treat. 2013 Aug;24(4):300-4. PubMed
- Rogers RS 3rd, Callen J, Wehr R, Krochmal L. Comparative efficacy of 12% ammonium lactate lotion and 5% lactic acid lotion in the treatment of moderate to severe xerosis. J Am Acad Dermatol 1989;21(4 Pt 1):714-6. PubMed
- Jennings MB, Logan L, Alfieri DM, Ross CF, Goodwin S, Lesczczynski C. A comparative study of lactic acid 10% and ammonium lactate 12% lotion in the treatment of foot xerosis. J Am Podiatr Med Assoc 2002;92(3):143-8. PubMed
- Dahl MV, Dahl AC. 12% lactate lotion for the treatment of xerosis. A double-blind clinical evaluation. Arch Dermatol 1983;119(1):27-30. DOI
- Pham HT, Exelbert L, Segal-Owens AC, Veves A. A prospective, randomized, controlled double-blind study of a moisturizer for xerosis of the feet in patients with diabetes. Ostomy Wound Manage 2002;48(5):30-6.
- Draelos ZD, Hall S, Munsick C. A 14-day Controlled Study Assessing Qualitative Improvement with 15% Lactic Acid and Ceramides in Skin Moisturization and Desquamation. J Clin Aesthet Dermatol 2020;13(8):E54-E58.
- Jennings MB, Alfieri D, Ward K, Lesczczynski C. Comparison of salicylic acid and urea versus ammonium lactate for the treatment of foot xerosis. A randomized, double-blind, clinical study. J Am Podiatr Med Assoc 1998;88(7):332-6. PubMed
- Ademola J, Frazier C, Kim SJ, Theaux C, Saudez X. Clinical evaluation of 40% urea and 12% ammonium lactate in the treatment of xerosis. Am J Clin Dermatol 2002;3(3):217-22. PubMed
- Jennings MB, Alfieri DM, Parker ER, Jackman L, Goodwin S, Lesczczynski C. A double-blind clinical trial comparing the efficacy and safety of pure lanolin versus ammonium lactate 12% cream for the treatment of moderate to severe foot xerosis. Cutis 2003;71
- Uy JJ, Joyce AM, Nelson JP, West B, Montague JR. Ammonium lactate 12% lotion versus a liposome-based moisturizing lotion for plantar xerosis. A double-blind comparison study. J Am Podiatr Med Assoc 1999;89(10):502-5. PubMed
- US Food and Drug Administration (FDA). Cosmetic Ingredients: Alpha Hydroxy Acids. August 2020. Available at: https://www.fda.gov/cosmetics/cosmetic-ingredients/alpha-hydroxy-acids. Accessed on October 19, 2021.
- Diebold R, Schopf B, Stammer H, Mendling W. Vaginal treatment with lactic acid gel delays relapses in recurrent urinary tract infections: results from an open, multicentre observational study. Arch Gynecol Obstet 2021;304(2):409-417. PubMed
- Khattar JA, Musharrafieh UM, Tamim H, Hamadeh GN. Topical zinc oxide vs. salicylic acid-lactic acid combination in the treatment of warts. Int J Dermatol 2007;46(4):427-30. PubMed
- Emtestam L, Kaaman T, Rensfeldt K. Treatment of distal subungual onychomycosis with a topical preparation of urea, propylene glycol and lactic acid: results of a 24-week, double-blind, placebo-controlled study. Mycoses 2012;55(6):532-40. PubMed
- Siskin SB, Quinlan PJ, Finkelstein MS, Marlucci M, Maglietta TG, Gibson JR. The effects of ammonium lactate 12% lotion versus no therapy in the treatment of dry skin of the heels. Int J Dermatol 1993;32(12):905-7. PubMed
- Robinson D, Friedmann D, Gordon J, Wortzman M, Nelson D. Efficacy and Tolerability of a Double-Conjugated Retinoid and Alpha Hydroxy Acid Cream in Subjects With Mild to Moderate Blemish-Prone Skin. J Drugs Dermatol 2022;21(1):54-59. DOI
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 Lactic Acid and Itraconazole Together: Common Questions
Is it safe to take Lactic Acid with Itraconazole?
Do Lactic Acid and Itraconazole have any of the same side effects?
Are Lactic Acid and Itraconazole used for the same thing?
Does Itraconazole interact with any supplements?
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.