Drug & supplement interaction

Moringa + Erythromycin

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

Moderate Interaction
Medically reviewed by · Updated September 2026
The bottom line Moderate

Erythromycin falls into 2 drug categories that Moringa can interact with; the most serious is rated moderate. Theoretically, moringa might increase or decrease levels of CYP3A4 substrates.

Read the full interaction report
SeverityModerate
LikelihoodPossible
Interactions2
EvidenceD
What do Severity, Likelihood & Evidence mean?
Know someone taking this? Share
Facebook Post Reddit Email
On this page
Interaction report

Moringa and Erythromycin

These two interact in 2 distinct ways. Each one is explained separately below.

Why Are There 2 Interactions?

Moringa interacts with whole categories of medication. Erythromycin falls into 2 of those categories, so it can interact with Moringa in 2 different ways. We’ve listed each one below — your overall risk is driven by the most serious of them (Moderate).

Moderate

CYTOCHROME P450 3A4 (CYP3A4) SUBSTRATES

1 of 2

Why this applies to Erythromycin

Erythromycin falls under CYTOCHROME P450 3A4 (CYP3A4) SUBSTRATES — the group Moringa interacts with.

Theoretically, moringa might increase or decrease levels of CYP3A4 substrates.
Some in vitro research suggests that moringa inhibits cytochrome P450 3A4 (CYP3A4). However, other in vitro research suggests that moringa extract induces CYP3A4 enzymes. A pharmacokinetic study in patients with HIV shows no change in the pharmacokinetics of nevirapine, which is partially metabolized by CYP3A4, when administered concomitantly with moringa leaf powder 1.85 grams daily for 14 days.
Severity Moderate Likelihood Possible Evidence D

Interaction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists.

Dr. Brian Staiger, PharmD, BCPS
Dr. Brian Staiger explains PharmD, Clinical Pharmacist

Here's the honest picture: your body uses an enzyme called CYP3A4 to help process erythromycin, and moringa may nudge that enzyme. The tricky part is the lab studies disagree. Some hint that moringa slows CYP3A4 (which could let erythromycin build up a bit, raising the odds of stomach upset, nausea, cramping, or rarely heart rhythm changes), while others suggest it speeds the enzyme up (which could make the antibiotic clear faster and work less well).

The key thing to know is that this is theoretical, based only on test-tube and animal data, and one human study showed no meaningful change. Eating moringa in normal food amounts is very unlikely to matter. Still, since you want this antibiotic to fully work, mention any moringa supplements to your pharmacist or doctor.

Contact Dr. Brian directly if you have additional questions on this interaction
References
  1. Monera TG, Wolfe AR, Maponga CC, et al. Moringa oleifera leaf extracts inhibit 6beta-hydroxylation of testosterone by CYP3A4. J Infect Dev Ctries 2008;2:379-83.
  2. Monera-Penduka TG, Maponga CC, Wolfe AR, Wiesner L, Morse GD, Nhachi CF. Effect of Moringa oleifera Lam. leaf powder on the pharmacokinetics of nevirapine in HIV-infected adults: a one sequence cross-over study. AIDS Res Ther. 2017;14:12. doi: 10.1186/s1 PubMed
  3. Haron MH, Dale O, Martin K, et al. Evaluation of the Herb-Drug Interaction Potential of Commonly Used Botanicals on the US Market with Regard to PXR- and AhR-Mediated Influences on CYP3A4 and CYP1A2. J Diet Suppl 2022. PubMed
Moderate

P-GLYCOPROTEIN SUBSTRATES

2 of 2

Erythromycin also falls under P-GLYCOPROTEIN SUBSTRATES.

Theoretically, moringa leaf extract might increase the levels and clinical effects of P-glycoprotein substrates.
In vitro research shows that moringa leaf extract inhibits renal P-glycoprotein transport activity. So far, this reaction has not been reported in humans.
Severity Moderate Likelihood Possible Evidence D

Interaction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists.

Dr. Brian Staiger, PharmD, BCPS
Dr. Brian Staiger explains PharmD, Clinical Pharmacist

Here's the gist with moringa and erythromycin. Your body uses a little pump called P-glycoprotein to move certain drugs out, and erythromycin is one of those drugs. In lab dish studies, moringa leaf extract seemed to slow that pump down. If that happened in a person, a bit more erythromycin could stay in the body, which in theory could nudge up side effects like stomach upset, nausea, cramping, or diarrhea.

The honest part: this comes only from test-tube research, not from real people, so it may not matter much in everyday life. Food amounts of moringa in cooking are far less of a concern than concentrated extract capsules. Erythromycin is also usually a short course, so this isn't a forever issue. Still, since you're on an antibiotic, mention any moringa supplement to your pharmacist or doctor first.

Contact Dr. Brian directly if you have additional questions on this interaction
References
  1. Amaeze O, Marques ES, Wei W, et al. Evaluation of Nigerian Medicinal Plants Extract on Human P-glycoprotein and Cytochrome P450 Enzyme Induction: Implications for Herb-drug Interaction. Curr Drug Metab. 2021;22(14):1103-1113. PubMed

What These Ratings Mean

Every interaction above is graded three ways — here’s the key to each label.

Severity how clinically significant the interaction is
Major

Clinically significant. Avoid the combination, or use only under close professional supervision.

Moderate

Usually worth avoiding or managing — may need monitoring, a dose change, or timing apart.

Minor

Generally not serious. Be aware of it and mention it to your pharmacist.

Likelihood how strong the evidence is that the interaction actually happens in people
  • LikelyWell-controlled human studies have demonstrated the likely existence of this interaction.
  • ProbableInteraction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.
  • PossibleInteraction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists.
  • UnlikelyInteraction has been demonstrated in animal or in lab research but has been shown not to occur in humans.
Evidence the quality of the studies behind the rating (graded A–D)
  • AHigh-quality meta-analysis (quantitative systematic review).
  • BCase-control study.
  • CConsensus.
  • DAnecdotal evidence.

These ratings are for information only. Never start, stop, or otherwise change your therapy before speaking with your provider.

Keep it in perspective

Moringa Also Interacts With Other Medications

Moringa has 716 moderate, 152 minor known drug interactions in our database — the Erythromycin one above is among them. If you take anything else, check it against the full list below.

Moderate 716 Minor 152 No known interaction 1,962 (incl. Erythromycin)
Taking anything else?

Check Another of Your Medications Against Moringa

Covers the 2,830 medications we’ve checked against Moringa. Pick one to open its full report.

From our Q&A

Questions About Moringa 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 Moringa 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 Moringa 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 Moringa as Part of a Dietary Supplement Product? Check It for Interactions

We hold 738 real supplement products containing Moringa, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Moringa. Your product may carry other ingredients that interact with Erythromycin too, on top of Moringa — and those would not show on this page. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Moringa 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 Moringa
Top 25%

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

29 days ago today
Medication Erythromycin
Top 25%

#375 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.

Supplement

About Moringa

What is Moringa?

  • Nutritional supplement
  • Blood sugar support
  • Cholesterol support
  • Inflammation
  • Skin conditions

Moringa is a nutrient-rich plant whose leaves are widely used as a food and supplement, especially in parts of the world where malnutrition is common. Early research hints at possible benefits for blood sugar, cholesterol, and inflammation, but the human evidence is limited and not strong enough to recommend it as a treatment. Talk with your pharmacist or doctor before using moringa, especially if you are pregnant, breastfeeding, or taking medications.

Read the full Moringa 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 & Moringa

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

0Major
716Moderate
152Minor
1,961No known interaction
716 Moderate 152 Minor 1,961 No interaction
Moderate

716 interactions

Showing 60 of 716 moderate interactions — see all 716 on the Moringa page.

Minor

152 interactions

Showing 60 of 152 minor interactions — see all 152 on the Moringa page.

No interaction 1,961 drugs checked — show the list

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

Showing the 60 most looked-up of 1,961 medications checked with no known interaction — see the full Moringa list.

See the full Moringa interactions page
See every supplement checked against Erythromycin, ranked by severity
Sources

Sources & How We Checked

Interaction details are evidence-graded and sourced from the Natural Medicines database. The medication overview comes from MedlinePlus.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

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

Keep exploring
Moringa monograph › Uses, safety, and every drug interaction in one place Erythromycin supplement interactions › Every supplement checked against Erythromycin, ranked by severity Erythromycin drug information › The full plain-English guide to this medication Supplement interaction checker › Check any supplement or product against your medications Browse medications A–Z › Every drug we've checked against herbs & supplements Ask a pharmacist › Free, personal answer from our licensed team
Pharmacist Counseling Corner

Taking Moringa and Erythromycin Together: Common Questions

Can you take Moringa with Erythromycin?
There is a moderate interaction, so it may be acceptable with monitoring or timing changes — but check with your pharmacist first. Read the full details on this page and confirm with your pharmacist before combining them.
Why are there 2 interactions listed for Moringa and Erythromycin?
Erythromycin belongs to more than one drug category, and Moringa interacts with each of those categories a little differently. We list every one so nothing is missed — your overall risk is driven by the most serious of them.
How serious is the Moringa and Erythromycin interaction?
We rate it Moderate. This combination may require monitoring, a dose adjustment, or separating the times you take each one. Consult your pharmacist before using them together.

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

Still Have a Question About Erythromycin and Moringa?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

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.