Ginseng and Relugolix: Interaction Details
AI-assisted, pharmacist-reviewed · AI content regenerated Jul 11, 2026 · Source data updated Jul 2, 2026 · Sources: FDA labeling, DDInter 2.0, cited literature
Relugolix
Ginseng
No brand names on record
How we grade severity & evidence
Severity levels
- Contraindicated: These should generally not be used together.
- Major: Potentially serious — often needs a change or close monitoring.
- Moderate: Can be significant — usually manageable with monitoring.
- Minor: Usually limited clinical impact.
Evidence grades
- Established: Well documented — supported by controlled studies or strong clinical data.
- Probable: Good supporting evidence, though not definitively proven.
- Suspected: Some evidence suggests this interaction, but it is not well established.
- Possible: Limited or conflicting evidence; the interaction may occur.
- Theoretical: Predicted from the drugs' pharmacology; not yet confirmed in people.
Ratings come from the documented interaction literature and are reviewed by a pharmacist. They describe the documented risk of the combination, not what will necessarily happen to you — your dose, timing, and health picture all matter.
If you take Orgovyx (relugolix) for your prostate cancer or fibroids/endometriosis, adding ginseng supplements may cause more relugolix to build up in your body. Ginseng can slow down a 'pump' in your gut (called P-gp) that normally limits how much relugolix gets absorbed. With more of the drug around, you may notice more side effects like hot flashes, fatigue, or other reactions.
The good news is that this is very manageable. Please don't stop either one on your own. Just let your pharmacist or doctor know you're using ginseng (or thinking about it) so they can guide the timing, watch you a bit more closely, or suggest a safer option.
Effect: Increased relugolix exposure. Relugolix is a P-gp substrate; ginseng is a purported P-gp inhibitor, so inhibition of intestinal P-gp-mediated efflux increases relugolix absorption and systemic exposure, raising adverse-reaction risk.
Magnitude: Ginseng-specific data are limited, but a labeled study with erythromycin (P-gp inhibitor) showed relugolix AUC increased 3.5-fold and Cmax 2.9-fold. Evidence: probable. Onset unspecified.
- Avoid concomitant use where possible.
- If unavoidable, give relugolix (or relugolix/estradiol/norethindrone acetate) first, separate by at least 6 hours, and monitor more frequently for adverse reactions.
- Relugolix may be interrupted up to 2 weeks for a short P-gp inhibitor course; if held >7 days, restart with a 360 mg loading dose then 120 mg daily.
What happens
Increased relugolix exposure
Interaction Deep Dive
Concurrent administration of relugolix (a P-gp substrate) with P-gp inhibitors should be avoided, since doing so can raise relugolix exposure and thereby heighten the potential for relugolix-related adverse reactions. When coadministration cannot be avoided, give relugolix or relugolix/estradiol/norethindrone acetate first, allow a gap of at least 6 hours between doses, and increase the frequency of monitoring for adverse reactions12. Relugolix therapy may be paused for as long as 2 weeks to accommodate a brief course of certain P-gp inhibitors. Once the P-gp inhibitor has been stopped, relugolix can be resumed. Should relugolix be interrupted for more than 7 days, reinitiate it using a loading dose of 360 mg on the first day, followed by 120 mg once daily. In a drug interaction study, giving relugolix (P-gp substrate) together with erythromycin (P-gp inhibitor) raised relugolix AUC by 3.5-fold and Cmax by 2.9-fold1.
Why it happens (mechanism)
Inhibition of P-gp-mediated efflux transport of relugolix
How to manage this interaction
What your care team may do:
- Recommend avoiding ginseng while on relugolix when possible.
- If both are used, have you take relugolix first and separate the ginseng dose by at least 6 hours.
- Monitor you more closely for relugolix side effects.
- In some cases, briefly pause relugolix during a short course of a P-gp inhibitor and resume afterward (with a loading dose if the pause is more than 7 days).
What you should do: Keep taking relugolix as prescribed and don't stop it on your own. Tell your pharmacist or doctor about any ginseng or herbal supplements so they can tailor timing and monitoring for you.
Management is individual — confirm any change with your pharmacist or prescriber.
Literature reports
1 report — tap to read
a) In a study examining drug interactions, giving relugolix (a P-gp substrate) together with erythromycin (a P-gp inhibitor) raised the AUC and Cmax of relugolix by 3.5-fold and 2.9-fold, respectively 1.
Common questions
Can I take Ginseng and Relugolix together?
Ginseng may raise relugolix levels and side effects by blocking a gut transporter, so it's best avoided; talk to your pharmacist or doctor about timing, monitoring, or a safer supplement before combining them. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Ginseng and Relugolix interaction?
It is rated major. Potentially serious — often needs a change or close monitoring.
How quickly could this interaction happen?
The documented onset is "unspecified". The timing of this interaction is not well characterized.
How is the Ginseng and Relugolix interaction managed?
What your care team may do: Recommend avoiding ginseng while on relugolix when possible. If both are used, have you take relugolix first and separate the ginseng dose by at least 6 hours. Monitor you more closely for relugolix side effects. In some cases, briefly pause relugolix during a short course of a P-gp inhibitor and resume afterward (with a loading dose if the pause is more than 7 days). W… Management is individual — always follow your own care team's guidance.
How strong is the evidence for this interaction?
The evidence is graded "probable". Good supporting evidence, though not definitively proven.
Questions for your pharmacist
- Does my dose of Ginseng or Relugolix need adjusting while I take them together?
- What symptoms should prompt me to call you or my prescriber right away?
- Does the timing of my doses matter for this combination?
- Is there a safer alternative to one of these medications for me?
References (2)
- Product Information: ORGOVYX oral tablets, relugolix oral tablets. Sumitomo Pharma America, Inc (per FDA), Marlborough, MA, 2025. DailyMed
- Product Information: MYFEMBREE(R) oral tablets, relugolix, estradiol, norethindrone acetate oral tablets. Myovant Sciences Inc (per FDA), Brisbane, CA, 2021. DailyMed
Keep reading about Relugolix
Keep reading about Ginseng
These medications also interact with supplements
Prescription drugs aren't the whole picture — herbal and dietary supplements can interact with them too. From the evidence-graded Natural Medicines database:
major · moderate · minor — check everything you take with our drug–supplement interaction checker.
Check another combination
Our instant two-drug interaction checker is almost here.
Still have questions about this combination?
Every question gets a real answer from a licensed pharmacist — free, and usually within a day.
Ask the pharmacist