Drug & supplement interaction

Sage + Ethinyl Estradiol, Ethynodiol Diacetate

Ethinyl Estradiol, Ethynodiol Diacetate brand names: Demulen 1/35, Zovia 1/35, Demulen Compack, Demulen 1/50, Zovia 1/50, and others.

Moderate Interaction
The bottom line Moderate

Ethinyl Estradiol, Ethynodiol Diacetate falls into 3 drug categories that Sage can interact with; the most serious is rated moderate. Theoretically, sage might increase levels of drugs transported by P-glycoprotein.

Read the full interaction report
SeverityModerate
LikelihoodPossible
Interactions3
EvidenceD
What do Severity, Likelihood & Evidence mean?
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Interaction report

Sage and Ethinyl Estradiol, Ethynodiol Diacetate

These two interact in 3 distinct ways. Each one is explained separately below.

Why Are There 3 Interactions?

Sage interacts with whole categories of medication. Ethinyl Estradiol, Ethynodiol Diacetate falls into 3 of those categories, so it can interact with Sage in 3 different ways. We’ve listed each one below — your overall risk is driven by the most serious of them (Moderate).

Moderate

P-GLYCOPROTEIN SUBSTRATES

1 of 3

Why this applies to Ethinyl Estradiol, Ethynodiol Diacetate

Ethinyl Estradiol, Ethynodiol Diacetate falls under P-GLYCOPROTEIN SUBSTRATES — the group Sage interacts with.

Theoretically, sage might increase levels of drugs transported by P-glycoprotein.
In vitro research suggests that common sage (Salvia officinalis) can inhibit the multi-drug transporter protein, P-glycoprotein. This effect 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 situation with your birth control pill (a combination of ethinyl estradiol and ethynodiol diacetate) and sage. In lab dish studies, sage appears to slow down a cellular pump called P-glycoprotein, which helps move certain medicines in and out of your body. The thinking is that if this pump is blocked, slightly more of the hormone could stay in your system. In theory, that might mean a touch more of the usual estrogen-related effects, like nausea, breast tenderness, bloating, or headache.

I want to be honest though: this has only been seen in a test tube, never in real people, so it's mostly theoretical. Everyday cooking amounts of sage are very unlikely to matter. If you're using concentrated sage extracts or the essential oil regularly, just give your pharmacist or doctor a quick heads-up so they can keep an eye on things.

References
  1. Hellum, B. H. and Nilsen, O. G. In vitro inhibition of CYP3A4 metabolism and P-glycoprotein-mediated transport by trade herbal products. Basic Clin Pharmacol Toxicol. 2008;102(5):466-475.
Moderate

CYTOCHROME P450 3A4 (CYP3A4) SUBSTRATES

2 of 3

Ethinyl Estradiol, Ethynodiol Diacetate also falls under CYTOCHROME P450 3A4 (CYP3A4) SUBSTRATES.

Theoretically, sage might increase the levels and clinical effects of drugs metabolized by CYP3A4.
In vitro evidence suggests that aqueous extracts of sage can inhibit CYP3A4. So far, this interaction 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

Your birth control pill, with ethinyl estradiol and ethynodiol diacetate, gets processed in your body partly by a liver enzyme called CYP3A4. In lab studies, water-based sage extracts seemed to slow this enzyme down a bit. If that happened in a person, estrogen levels could nudge upward, which might mean more of the usual estrogen-related effects like nausea, breast tenderness, bloating, or headaches.

Here is the reassuring part: this is only a test tube finding, and it has never actually been reported in real people. Everyday cooking amounts of sage are very unlikely to matter at all. If you are regularly using concentrated sage extracts or the essential oil, just give your pharmacist or doctor a heads-up so they can keep an eye on things.

References
  1. Foster BC, Vandenhoek S, Hana J, et al. In vitro inhibition of human cytochrome P450-mediated metabolism of marker substrates by natural products. Phytomedicine 2003;10:334-42.. PubMed
  2. Hellum, B. H. and Nilsen, O. G. In vitro inhibition of CYP3A4 metabolism and P-glycoprotein-mediated transport by trade herbal products. Basic Clin Pharmacol Toxicol. 2008;102(5):466-475.
Moderate

ESTROGENS

3 of 3

Ethinyl Estradiol, Ethynodiol Diacetate also falls under ESTROGENS.

Theoretically, sage might interfere with hormone therapy.
In vitro evidence suggests that geraniol, a constituent of Spanish sage (Salvia lavandulaefolia), exerts estrogenic activity. The clinical significance of this effect is unclear.
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

Your pill (Demulen, Zovia, Kelnor) is a combination birth control pill made of an estrogen and a progestin. The concern here with sage is very mild and mostly theoretical. In lab dishes, a compound found in Spanish sage called geraniol showed weak estrogen-like activity. That's a long way from proving anything happens in real people.

What this could theoretically mean is a small added estrogen-like nudge on top of your pill, but honestly, the evidence is too thin to predict any real effect on your cycle, breakthrough bleeding, or your pill's reliability. Sage used as a kitchen herb is not a worry at all. If you're thinking about concentrated sage extracts or capsules regularly, just run it by your pharmacist or doctor first.

References
  1. Perry, N. S., Houghton, P. J., Sampson, J., Theobald, A. E., Hart, S., Lis-Balchin, M., Hoult, J. R., Evans, P., Jenner, P., Milligan, S., and Perry, E. K. In-vitro activity of S. lavandulaefolia (Spanish sage) relevant to treatment of Alzheimer's diseas

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

Sage Also Interacts With Other Medications

Sage has 1,295 moderate known drug interactions in our database — the Ethinyl Estradiol, Ethynodiol Diacetate one above is among them. If you take anything else, check it against the full list below.

Taking anything else?

Check Another of Your Medications Against Sage

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

Everything else you take

See Every Supplement That Interacts With Ethinyl Estradiol, Ethynodiol Diacetate

This page covers Sage only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Ethinyl Estradiol, Ethynodiol Diacetate page lists 239 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 · 195 moderate · 38 minor.

From our pharmacist’s overview on the Ethinyl Estradiol, Ethynodiol Diacetate page

“The stakes here are pregnancy prevention, so I read this list with genuine seriousness. Ethinyl estradiol with ethynodiol diacetate (Zovia, Demulen, Kelnor) is a combined birth control pill, and the interactions that concern me most are the ones that can quietly weaken it.”

Reviewed by 2 · Jul 18, 2026

Open the Ethinyl Estradiol, Ethynodiol Diacetate interaction page

One more smart check

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

We hold 718 real supplement products containing Sage, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Sage. Your product may carry other ingredients that interact with Ethinyl Estradiol, Ethynodiol Diacetate too, on top of Sage — 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 Sage and Ethinyl Estradiol, Ethynodiol Diacetate 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 Sage
Top 25%

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

29 days ago today
Medication Ethinyl Estradiol, Ethynodiol Diacetate
Steady interest

#1,513 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 Sage

What is Sage?

Sage
  • Sore throat and mouth irritation
  • Digestive upset
  • Excessive sweating
  • Memory and thinking
  • Menopause symptoms (hot flashes)
  • General antioxidant support

Sage is a common kitchen herb that is generally safe in food amounts and is traditionally used for sore throats, digestion, sweating, and memory. Some early research is encouraging for sore throat and menopausal hot flashes, but most uses are not well proven. Concentrated extracts and the essential oil should be used carefully because high doses contain a compound called thujone, which can be harmful.

Read the full Sage monograph & all interactions
Keep checking

Other Drugs & Sage

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

0Major
1,295Moderate
0Minor
1,534No known interaction
Moderate

1,295 interactions

Showing 60 of 1,295 moderate interactions — see all 1,295 on the Sage page.

No interaction 1,534 drugs checked — show the list
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

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Pharmacist Counseling Corner

Taking Sage and Ethinyl Estradiol, Ethynodiol Diacetate Together: Common Questions

Can you take Sage with Ethinyl Estradiol, Ethynodiol Diacetate?
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 3 interactions listed for Sage and Ethinyl Estradiol, Ethynodiol Diacetate?
Ethinyl Estradiol, Ethynodiol Diacetate belongs to more than one drug category, and Sage 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 Sage and Ethinyl Estradiol, Ethynodiol Diacetate 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

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