Drug & supplement interaction

Indigo Pulchra + Erythromycin

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

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

We found no known interaction between Indigo Pulchra 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

Indigo Pulchra 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 Indigo Pulchra 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.

Indigo Pulchra safety at a glance

Indigo Pulchra overall Not established We cannot verify what this product is, so its safety is unknown.
Pregnancy Avoid With no safety data, avoid use during pregnancy.
Breastfeeding Avoid With no safety data, avoid use while breastfeeding.

Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Erythromycin and Indigo Pulchra? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Erythromycin

Interactions in our licensed database are recorded against drug classes, not just single drug names. Erythromycin is filed under 9 classifications — including macrolide antibiotics, cytochrome p450 1a2 (cyp1a2) inhibitors, qt interval-prolonging drugs. Indigo Pulchra has documented interactions with 1 drug class — the most serious being antidiabetes drugs (moderate) — and none of Erythromycin’s classifications are among them.

Classification data comes from our licensed Natural Medicines dataset. A medication can belong to classes beyond those recorded there, so this describes how the check was run — it is not a safety guarantee.

Keep it in perspective

Indigo Pulchra Does Interact With Other Medications

Indigo Pulchra has 86 moderate known drug interactions in our database — Erythromycin isn’t one of them. If you take anything else, check it against the full list below.

Moderate 86 No known interaction 2,744 (incl. Erythromycin)
Taking anything else?

Check Another of Your Medications Against Indigo Pulchra

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

From our Q&A

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

We hold 9 real supplement products containing Indigo Pulchra, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Indigo Pulchra. Even though Indigo Pulchra 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 Indigo Pulchra 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 Indigo Pulchra
Steady interest

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

29 days ago today
Medication Erythromycin
Top 25%

#601 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 Indigo Pulchra reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Indigo Pulchra and Erythromycin records this page draws on were last updated June 20, 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 Indigo Pulchra

What is Indigo Pulchra?

Indigo Pulchra is not a plant or supplement that we can find in any reliable scientific or herbal reference. Because we cannot confirm what it is, what it contains, or whether it is safe, we cannot responsibly describe its uses or dosing. If you have a product with this name, talk to a pharmacist before using it.

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

Indigo Pulchra: dosing

There is no established or recommended dose for Indigo Pulchra because it is not a recognized supplement. We cannot suggest any amount as safe.

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

Read the full Indigo Pulchra 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 & Indigo Pulchra

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

0Major
86Moderate
0Minor
2,743No known interaction
86 Moderate 2,743 No interaction
Moderate

86 interactions

Showing 60 of 86 moderate interactions — see all 86 on the Indigo Pulchra page.

No interaction 2,743 drugs checked — show the list

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

Showing the 60 most looked-up of 2,743 medications checked with no known interaction — see the full Indigo Pulchra list.

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

Indigo Pulchra References

The 2 references that drive our Indigo Pulchra 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. Tanko Y, Abdelaziz MM, Adelaiye AB, Fatihu MY, Musa KY. Effects of Hydromethanolic leaves extract of Indigofera pulchra on blood glucose levels of normoglycemic and alloxan-induced diabetic Wistar rats. International Journal of Applied Research in Natural
  2. Tanko Y, Mabrouk MA, Adelaiye AB, Fatihu MY, and Musa KY. Anti-diabetic and some haematological effects of ethylacetate and n-butanol fractions of Indigofera pulchra extract on alloxan-induced diabetic Wistar rats. J Endocrinol Diabetes. 2011; 2(1): 1-7.

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 Indigo Pulchra and Erythromycin Together: Common Questions

Is it safe to take Indigo Pulchra with Erythromycin?
We do not list a known interaction between Indigo Pulchra 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.
How was the Indigo Pulchra and Erythromycin combination checked?
Interactions in our licensed database are recorded against drug classes. Erythromycin is filed under 9 classifications, and Indigo Pulchra has documented interactions with 1 drug class — none of Erythromycin's classifications are among them. A medication can belong to classes beyond those recorded in our dataset, so this describes how the check was run rather than guaranteeing safety.
Does Indigo Pulchra interact with any other medications?
Yes. Indigo Pulchra has 86 documented drug interactions in our database — Erythromycin is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.
Does Erythromycin interact with any supplements?
Yes. Erythromycin has documented interactions with 204 supplements in our database — Indigo Pulchra 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

Indigo Pulchra 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 2 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Erythromycin and Indigo Pulchra?

Our pharmacists answer your medication & supplement questions — free.

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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.