Drug & supplement interaction

Genistein Combined Polysaccharide + Rilpivirine

Rilpivirine brand names: Edurant, Edurant Ped.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 27, 2026
The bottom line No known interaction

We found no known interaction between Genistein Combined Polysaccharide and Rilpivirine 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. Additionally, although there is no interaction, the label for Rilpivirine states a food rule worth keeping to.

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Interaction report

Genistein Combined Polysaccharide and Rilpivirine

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 Rilpivirine and Genistein Combined Polysaccharide 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.

Genistein Combined Polysaccharide safety at a glance

Genistein Combined... overall Use caution Human safety data is limited, so use only with medical guidance.
Pregnancy Avoid Because it acts like estrogen and lacks safety data, avoid during pregnancy.
Breastfeeding Avoid Not enough safety information, so it is best avoided while breastfeeding.

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

Still wondering about combining Rilpivirine and Genistein Combined Polysaccharide? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Rilpivirine

Interactions in our licensed database are recorded against drug classes, not just single drug names. Rilpivirine is filed under 5 classifications — including non-nucleoside reverse transcriptase inhibitors (nnrtis), qt interval-prolonging drugs, hepatotoxic drugs. Genistein Combined Polysaccharide has documented interactions with 2 drug classes — the most serious being caffeine (moderate) and cytochrome p450 2c9 (cyp2c9) substrates (minor) — and none of Rilpivirine’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

Genistein Combined Polysaccharide Does Interact With Other Medications

Genistein Combined Polysaccharide has 29 moderate, 111 minor known drug interactions in our database — Rilpivirine isn’t one of them. If you take anything else, check it against the full list below.

Moderate 29 Minor 111 No known interaction 2,690 (incl. Rilpivirine)
Taking anything else?

Check Another of Your Medications Against Genistein Combined Polysaccharide

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

What to actually watch for

What Genistein Combined Polysaccharide Itself Has Been Linked To

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

  • Diarrhea / Nausea Additional detail

    “In one case report, a patient with bladder cancer taking genistein combined polysaccharide 5 grams daily experienced mild nausea and diarrhea.”

    Genistein Combined Polysaccharide · Natural Medicines adverse-effect record, reported in bladder cancer.

    1 source cited
    1. 95165. Capodice JL, Cammack AS, McKiernan JM, Katz AE. Two case reports on the use of genistein combined polysaccharide (GCP) against bladder cancer recurrence. J Complement Integr Med 2011;8. PubMed

Everything above comes from the Natural Medicines adverse-effect record for Genistein Combined Polysaccharide — expand a row for the licensed statement it rests on. We read the ADVERSE REACTIONS section of Rilpivirine’s FDA label too, and the two lists don’t meaningfully overlap — which is why no Rilpivirine column appears here.

How to take them

Some Rilpivirine Products Have a Food Rule — Genistein Combined Polysaccharide Should Not Break It

At least one FDA label for a product containing Rilpivirine says to take it with food. If you take Genistein Combined Polysaccharide on an empty stomach out of habit, keep them separate — and take Rilpivirine with a meal where the label says to.

This may not be true of your version. Food instructions belong to the product, not the ingredient: two Rilpivirine products can carry different directions, and extended-release forms often differ from immediate-release ones. The label we read is quoted below — check the directions on your own box or bottle, or ask your pharmacist, for how to take the exact product you were given.

2 DOSAGE AND ADMINISTRATION One 25 mg rilpivirine tablet taken once daily with a meal for patients weighing at least 35 kg.

From the Dosage and Administration section of the FDA label we read for Rilpivirine — where that label names a specific product, the instruction is that product's. See the Rilpivirine drug page ›

A food rule is not an interaction — it is about how much of the medicine you absorb. The directions that came with your own product, and your pharmacist, outrank anything on this page.

Overlapping uses

What Rilpivirine Is Prescribed For, and What Genistein Combined Polysaccharide Has Been Studied For

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

Rilpivirine is prescribed for: Rilpivirine treats HIV-1 infection. It is always used with other HIV medicines in people who have not taken HIV treatment before and whose viral load is 100,000 copies/mL or lower when they start. Edurant and Edurant Ped are approved from age 2 and weight of at least 14 kg. Rilpivirine tablets (the generic) are labeled for ages 12 and older and weight of at least 35 kg.

Read the rest of what Rilpivirine is prescribed for

Edurant and rilpivirine tablets can also be used with Vocabria (cabotegravir) for short-term treatment in certain adults and teens whose virus is already well controlled. This includes a trial period before Cabenuva injections, or as backup when a planned injection will be missed.

Genistein Combined Polysaccharide has been studied for:

  • Cancer studied, not established Genistein Combined Polysaccharide has been studied for this. Natural Medicines rates the evidence: Insufficient Reliable Evidence To Rate Read what the research shows

    Genistein Combined Polysaccharide for cancer

    Although there is interest in using oral genistein combined polysaccharide for the treatment of various forms of cancer, including breast cancer, bladder cancer, and prostate cancer, there is insufficient reliable information about the clinical effects of genistein combined polysaccharide for this purpose.

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 Rilpivirine on your own; if you are taking Genistein Combined Polysaccharide for the same health topic, tell your prescriber, especially if the medicine is being adjusted to a target.

Everything else you take

See Every Supplement That Interacts With Rilpivirine

This page covers Genistein Combined Polysaccharide only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Rilpivirine page lists 175 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 · 127 moderate · 37 minor.

From our pharmacist’s overview on the Rilpivirine page

“St. John's wort is the supplement I would rule out first for anyone taking rilpivirine (Edurant) for HIV.”

Reviewed by 2 · Jul 18, 2026

Open the Rilpivirine interaction page

How much people look this up

Where Genistein Combined Polysaccharide and Rilpivirine 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 Genistein Combined Polysaccharide
Top half

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

29 days ago today
Medication Rilpivirine
Steady interest

#1,982 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 Genistein Combined Polysaccharide reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 27, 2026. The Genistein Combined Polysaccharide and Rilpivirine 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 Genistein Combined Polysaccharide

What is Genistein Combined Polysaccharide?

  • Prostate cancer support
  • Bladder cancer support
  • Breast cancer support
  • Hormone-related cancers
  • Immune support

Genistein Combined Polysaccharide (GCP) is a soy-and-mushroom supplement studied mostly for hormone-related cancers like prostate cancer, but solid human evidence is still limited. It should never replace standard cancer treatment, and you should talk with your oncologist and pharmacist before using it, especially if you have a hormone-sensitive condition.

Soybean-derived genistein combined with polysaccharides from basidiomycete mushrooms · Capsules, tablets

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

Genistein Combined Polysaccharide: dosing

There is no officially established or standardized dose for Genistein Combined Polysaccharide. Different products contain different amounts and formulations, so the right amount is not clear.If you choose to use GCP, follow the directions on the specific product label and do not exceed them.

From our Genistein Combined Polysaccharide monograph — the full record covers uses, side effects and every documented interaction.

Read the full Genistein Combined Polysaccharide monograph & all interactions
Medication

About Rilpivirine

What Is Rilpivirine Used For?

Brand names: Edurant, Edurant Ped

Rilpivirine treats HIV-1 infection. It is always used with other HIV medicines in people who have not taken HIV treatment before and whose viral load is 100,000 copies/mL or lower when they start.

Edurant and Edurant Ped are approved from age 2 and weight of at least 14 kg. Rilpivirine tablets (the generic) are labeled for ages 12 and older and weight of at least 35 kg. Edurant and rilpivirine tablets can also be used with Vocabria (cabotegravir) for short-term treatment in certain adults and teens whose virus is already well controlled. This includes a trial period before Cabenuva injections, or as backup when a planned injection will be missed.

See full Rilpivirine drug information
Keep checking

Other Drugs & Genistein Combined Polysaccharide

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

0Major
29Moderate
111Minor
2,689No known interaction
29 Moderate 111 Minor 2,689 No interaction
Moderate

29 interactions

Minor

111 interactions

Showing 60 of 111 minor interactions — see all 111 on the Genistein Combined Polysaccharide page.

No interaction 2,689 drugs checked — show the list

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

Showing the 60 most looked-up of 2,689 medications checked with no known interaction — see the full Genistein Combined Polysaccharide list.

See the full Genistein Combined Polysaccharide interactions page
See every supplement checked against Rilpivirine, ranked by severity
Evidence & sources

Genistein Combined Polysaccharide References

The 2 references that drive our Genistein Combined Polysaccharide 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. Chen, Y., Xiao, C. Q., He, Y. J., Chen, B. L., Wang, G., Zhou, G., Zhang, W., Tan, Z. R., Cao, S., Wang, L. P., and Zhou, H. H. Genistein alters caffeine exposure in healthy female volunteers. Eur.J Clin.Pharmacol. 2011;67(4):347-353. PubMed
  2. Capodice JL, Cammack AS, McKiernan JM, Katz AE. Two case reports on the use of genistein combined polysaccharide (GCP) against bladder cancer recurrence. J Complement Integr Med 2011;8. 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 Genistein Combined Polysaccharide and Rilpivirine Together: Common Questions

Is it safe to take Genistein Combined Polysaccharide with Rilpivirine?
We do not list a known interaction between Genistein Combined Polysaccharide and Rilpivirine. 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.
Should I take Genistein Combined Polysaccharide and Rilpivirine at the same time of day?
At least one FDA label for a product containing Rilpivirine says to take it with food. If you take Genistein Combined Polysaccharide on an empty stomach out of habit, keep them separate and take Rilpivirine with a meal where the label says to. Food instructions belong to the product rather than the ingredient — two Rilpivirine products can differ — so check the directions on your own box. This is about absorption, not an interaction.
Are Genistein Combined Polysaccharide and Rilpivirine 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 Genistein Combined Polysaccharide in each. That is a conversation for your prescriber, especially if Rilpivirine is being adjusted to a target.
How was the Genistein Combined Polysaccharide and Rilpivirine combination checked?
Interactions in our licensed database are recorded against drug classes. Rilpivirine is filed under 5 classifications, and Genistein Combined Polysaccharide has documented interactions with 2 drug classes — none of Rilpivirine'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 Genistein Combined Polysaccharide interact with any other medications?
Yes. Genistein Combined Polysaccharide has 140 documented drug interactions in our database — Rilpivirine 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 Rilpivirine interact with any supplements?
Yes. Rilpivirine has documented interactions with 175 supplements in our database — Genistein Combined Polysaccharide is not one of them. The Rilpivirine 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

Genistein Combined Polysaccharide monograph Uses, safety profile, and every drug interaction in one place Rilpivirine drug information The full plain-English guide to this medication Rilpivirine supplement interactions Every supplement checked against Rilpivirine, 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 Rilpivirine and Genistein Combined Polysaccharide?

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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.