Drug & supplement interaction

Lauric Acid + Erythromycin

Erythromycin brand names: Erythro S, PCE, E-Mycin, Erythro-ES, EryPed Chewable, and others.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 20, 2026
The bottom line No known interaction

We found no known interaction between Lauric Acid and Erythromycin 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.

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Interaction report

Lauric Acid and Erythromycin

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 Erythromycin and Lauric 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 Lauric Acid at all — not against Erythromycin, 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.

Lauric Acid safety at a glance

Lauric Acid overall Use caution Generally fine in food amounts, but high-dose supplements lack strong safety data.
Pregnancy Likely Safe When used orally in amounts commonly found in foods. There is insufficient reliable information available about the safety of lauric acid when used in medicinal... Read the full pregnancy detail
Breastfeeding Likely Safe When used orally in amounts commonly found in foods. There is insufficient reliable information available about the safety of lauric acid when used in medicinal... Read the full breastfeeding detail

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.

Still wondering about combining Erythromycin and Lauric Acid? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

What Lauric Acid Itself Has Been Linked To

This is not an interaction — nothing below involves Erythromycin. It is the side-effect record for Lauric Acid on its own, from the licensed Natural Medicines monograph. If something new turns up after you add Lauric Acid, this list is the first place to look.

  • Nausea Additional detail

    “Orally, nausea appears to be fairly common when lauric acid is infused into the duodenum at a rate of 0.4 kcal/minute or faster. The rate of nausea with oral administration is unknown.”

    Lauric Acid · Natural Medicines adverse-effect record, reported in nausea and vomiting.

    1 source cited
    1. 106421. McVeay C, Fitzgerald PCE, Ullrich SS, Steinert RE, Horowitz M, Feinle-Bisset C. Effects of intraduodenal administration of lauric acid and L-tryptophan, alone and combined, on gut hormones, pyloric pressures, and energy intake in healthy men. Am J Clin Nu PubMed

Everything above comes from the Natural Medicines adverse-effect record for Lauric Acid — expand a row for the licensed statement it rests on. We haven’t matched Erythromycin to its FDA label in our system yet, so we can’t compare its own side-effect list here — the leaflet that comes with your prescription is the authoritative list for Erythromycin.

Special populations

Lauric Acid in Pregnancy & Breastfeeding

Pregnancy And Lactation Likely Safe

When used orally in amounts commonly found in foods. There is insufficient reliable information available about the safety of lauric acid when used in medicinal amounts during pregnancy or lactation. Dietary lauric acid is excreted into breast milk.

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

Overlapping uses

What Erythromycin Is Prescribed For, and What Lauric Acid Has Been Studied For

These two come up together because they touch the same health topic — not because they do the same job. Erythromycin is a prescription medicine with approved uses on its FDA label. Lauric Acid is a supplement: what follows is what researchers have looked at it for, and how strong that evidence is.

Erythromycin is prescribed for: Erythromycin treats bacterial infections caused by susceptible organisms. Oral and intravenous forms are used for upper and lower respiratory tract infections, skin and soft-tissue infections, pertussis (whooping cough), Legionnaires' disease, sexually transmitted infections (gonorrhea, syphilis, chlamydia), listeriosis, and other conditions. Erythrocin Lactobionate IV and erythromycin lactobionate injection are specifically for patients who cannot take oral medication or who need rapid, high blood levels due to severe infection — IV therapy should be switched to oral as soon as appropriate. Erythromycin topical solution 2% and Ery 2% Pads (swabs) are indicated only for the topical treatment of acne vulgaris (acne) and are applied directly to the skin — they are not used for internal infections.

Lauric Acid has been studied for:

  • Bronchitis studied, not established Lauric Acid has been studied for this. Natural Medicines rates the evidence: Insufficient Reliable Evidence To Rate Read what the research shows

    Lauric Acid for bronchitis

    Although there is interest in using oral lauric acid for bronchitis, there is insufficient reliable information about the clinical effects of lauric acid for this condition.

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 Erythromycin on your own; if you are taking Lauric Acid for the same health topic, tell your prescriber, especially if the medicine is being adjusted to a target.

From our Q&A

Questions About Lauric Acid or Erythromycin

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Lauric Acid or Erythromycin, 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.

Everything else you take

See Every Supplement That Interacts With Erythromycin

This page covers Lauric Acid only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Erythromycin page lists 204 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), American Hellebore (major), Arsenic (major), Beer (major) and Cesium (major).

By severity: 11 major · 153 moderate · 40 minor.

From our pharmacist’s overview on the Erythromycin page

“Erythromycin calls for more supplement caution than most antibiotics, and the reason is one liver enzyme, CYP3A4. Erythromycin both blocks that enzyme and is broken down by it, so grapefruit can push erythromycin levels up while St.”

Reviewed by 2 · Jul 18, 2026

Open the Erythromycin interaction page

One more smart check

Taking Lauric Acid as Part of a Dietary Supplement Product? Check It for Interactions

We hold 154 real supplement products containing Lauric Acid, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Lauric Acid. Even though Lauric Acid itself has no known interaction with Erythromycin, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Lauric Acid and Erythromycin 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.

Supplement Lauric Acid
Steady interest

#1,037 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Erythromycin
Top half

#861 of 2,830 medications looked up here in the last 7 days

29 days ago today

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 Lauric Acid reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Lauric Acid and Erythromycin 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.
Data structure & sourcing designed and verified by .
Supplement

About Lauric Acid

What is Lauric Acid?

  • Antimicrobial support
  • Skin care and acne
  • Heart and cholesterol concerns
  • Immune support
  • Energy and weight management

Lauric acid is a medium-to-long-chain saturated fatty acid found in coconut oil, palm kernel oil, and breast milk. It is studied for possible antimicrobial and skin benefits, but solid human evidence for most supplement uses is limited. As part of a normal diet it is generally fine; talk to your pharmacist or doctor before using high-dose supplements.

Fatty acid found mainly in coconut oil and palm kernel oil; also present in human breast milk · Coconut oil, MCT products, capsules, monolaurin supplements, topical products, soaps

An interaction check asks whether these two react with each other — it does not ask whether Lauric Acid is a good idea for someone in your situation. Here is what our Lauric Acid record says about it on its own.

Lauric Acid: dosing

There is no official or standardized dose of lauric acid as a supplement. Amounts vary widely between products, including coconut oil, MCT blends, and monolaurin capsules.If you choose to use a lauric acid or monolaurin product, follow the directions on the label and do not assume more is better.

From our Lauric Acid monograph — the full record covers uses, side effects and every documented interaction.

Read the full Lauric Acid monograph & all interactions
Medication

About Erythromycin

What Is Erythromycin Used For?

Brand names: Erythro S, PCE, E-Mycin, Erythro-ES, EryPed Chewable, Eryc, Ery-Tab, Rythro Enca, Erythro E-C, Erythro Base, Ilosone, Ilotycin

Erythromycin treats bacterial infections caused by susceptible organisms. Oral and intravenous forms are used for upper and lower respiratory tract infections, skin and soft-tissue infections, pertussis (whooping cough), Legionnaires' disease, sexually transmitted infections (gonorrhea, syphilis, chlamydia), listeriosis, and other conditions. Erythrocin Lactobionate IV and erythromycin lactobionate injection are specifically for patients who cannot take oral medication or who need rapid, high blood levels due to severe infection — IV therapy should be switched to oral as soon as appropriate.

Erythromycin topical solution 2% and Ery 2% Pads (swabs) are indicated only for the topical treatment of acne vulgaris (acne) and are applied directly to the skin — they are not used for internal infections.

See full Erythromycin drug information
Keep checking

Other Drugs & Lauric Acid

Browse every other medication we’ve checked against Lauric Acid — both the ones with a known interaction and the ones without. Select any drug for the full detail.

0Major
0Moderate
0Minor
2,829No known interaction
2,829 No interaction
No interaction 2,829 drugs checked — show the list

We also checked Lauric Acid against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Lauric Acid list.

See the full Lauric Acid interactions page
See every supplement checked against Erythromycin, ranked by severity
Evidence & sources

Lauric Acid References

The 8 references that drive our Lauric 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.

  1. Brown KE, Leong K, Huang CH, et al. Gelatin/chondroitin 6-sulfate microspheres for the delivery of therapeutic proteins to the joint. Arthritis Rheum 1998;41:2185-95. PubMed
  2. de Roos N, Schouten E, Katan M. Consumption of a solid fat rich in lauric acid results in a more favorable serum lipid profile in healthy men and women than consumption of a solid fat rich in trans-fatty acids. J Nutr 2001;131;242-5. PubMed
  3. Temme EH, Mensink RP, Hornstra G. Comparison of the effects of diets enriched in lauric, palmitic, or oleic acids on serum lipids and lipoproteins in healthy women and men. Am J Clin Nutr 1996;63:897-903. PubMed
  4. Denke MA, Grundy SM. Comparison of effects of lauric acid and palmitic acid on plasma lipids and lipoproteins. Am J Clin Nutr 1992;56:895-8. PubMed
  5. Tholstrup T, Marckmann P, Vessby B, Sandstrom B. Effect of fats high in individual saturated fatty acids on plasma lipoprotein[a] levels in young healthy men. J Lipid Res 1995;36;1447-52. DOI
  6. Francois CA, Connor SL, Wander RC, Connor WE. Acute effects of dietary fatty acids on the fatty acids of human milk. Am J Clin Nutr 1998;67:301-8. PubMed
  7. Tholstrup T, Marckmann P, Jespersen J, Sandstrom B. Fat high in stearic acid favorably affects blood lipids and factor VII coagulant activity in comparison with fats high in palmitic acid or high in myristic and lauric acids. Am J Clin Nutr 1994;59:371-7. PubMed
  8. McVeay C, Fitzgerald PCE, Ullrich SS, Steinert RE, Horowitz M, Feinle-Bisset C. Effects of intraduodenal administration of lauric acid and L-tryptophan, alone and combined, on gut hormones, pyloric pressures, and energy intake in healthy men. Am J Clin Nu PubMed

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.

Pharmacist Counseling Corner

Taking Lauric Acid and Erythromycin Together: Common Questions

Is it safe to take Lauric Acid with Erythromycin?
We do not list a known interaction between Lauric Acid and Erythromycin. That does not guarantee the combination is risk-free, so confirm with your pharmacist or doctor — especially if you take other medications or have a health condition.
Are Lauric Acid and Erythromycin used for the same thing?
They overlap in purpose, which usually means the real question is whether you need both rather than whether they are safe together. This page lists the shared uses and how strong the evidence is for Lauric Acid in each. That is a conversation for your prescriber, especially if Erythromycin is being adjusted to a target.
Does Erythromycin interact with any supplements?
Yes. Erythromycin has documented interactions with 204 supplements in our database — Lauric Acid is not one of them. The Erythromycin interaction page linked on this page lists every one, ranked by severity.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Where next

Keep Exploring

Lauric Acid monograph Uses, safety profile, and every drug interaction in one place Erythromycin drug information The full plain-English guide to this medication Erythromycin supplement interactions Every supplement checked against Erythromycin, ranked by severity Supplement interaction checker Check any supplement or product against your medications Browse medications A–Z Every drug we’ve checked against herbs & supplements References The 8 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Erythromycin and Lauric Acid?

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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.