Drug & supplement interaction

Condurango + Vardenafil

Vardenafil brand names: Levitra, Staxyn.

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 Condurango and Vardenafil 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

Condurango and Vardenafil

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 Vardenafil and Condurango 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.

Worth understanding: our licensed dataset holds no drug-interaction record for Condurango at all — not against Vardenafil, and not against any other medication we track. This verdict therefore rests on the absence of any recorded data, not on research that looked at this combination and found nothing. We cannot rule an interaction out.

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.

Condurango safety at a glance

Condurango overall Use caution Little modern safety data exists, so use cautiously and at low amounts.
Pregnancy Avoid Safety is unknown, so it is best avoided during pregnancy.
Breastfeeding Avoid No reliable safety data exists, so avoid while breastfeeding.

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

Still wondering about combining Vardenafil and Condurango? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

What Vardenafil’s Own FDA Label Lists

This is not an interaction — none of it involves Condurango. These are the most notable effects listed in the ADVERSE REACTIONS section of Vardenafil’s own FDA label, for the medication by itself. Knowing the drug’s own list makes it easier to work out the likely cause if something new turns up while you take both. 2 of them are worth acting on rather than waiting out — marked below.

  • Hearing loss Worth acting on
  • An irregular heartbeat Worth acting on
  • Flushing
  • A stuffy or runny nose
  • Back pain
  • Stomach upset
  • Dizziness mentioned in 4.3% of FDA reports for Vardenafil
  • Headache mentioned in 3.9% of FDA reports for Vardenafil
  • Nausea

From the ADVERSE REACTIONS section of the FDA label for Vardenafil. Read the label on DailyMed › Where a percentage is shown, it is the share of 669 voluntary FDA FAERS reports for Vardenafil that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. Condurango’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no Condurango side to compare — that is a limit of the record, not a statement that Condurango has no side effects.

From our Q&A

Questions About Condurango or Vardenafil

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Condurango or Vardenafil, 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 Vardenafil

This page covers Condurango only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Vardenafil page lists 144 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), American Mistletoe (major), Grapefruit (major), Hawthorn (major) and St. John's Wort (major).

By severity: 5 major · 98 moderate · 41 minor.

From our pharmacist’s overview on the Vardenafil page

“Vardenafil (Levitra, Staxyn), the erectile dysfunction pill, is broken down by a single liver enzyme, CYP3A4, and that one fact shapes most of this page. Supplements that block the enzyme, grapefruit being the best documented, can push vardenafil levels up and intensify its side effects, while St.”

Reviewed by 2 · Jul 18, 2026

Open the Vardenafil interaction page

One more smart check

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

We hold 37 real supplement products containing Condurango, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Condurango. Even though Condurango itself has no known interaction with Vardenafil, 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 Condurango and Vardenafil 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 Condurango
Top half

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

29 days ago today
Medication Vardenafil
Top 25%

#636 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. Condurango is not yet covered by that licensed database, so its write-up cites publicly available medical sources directly (see the references below).
  • Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Condurango reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Condurango and Vardenafil records this page draws on were last updated June 22, 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 Condurango

What is Condurango?

  • Digestive upset
  • Loss of appetite
  • Stimulating gastric secretion
  • Indigestion and bloating
  • Traditional tonic

Condurango is the bark of a South American vine traditionally used as a bitter to stimulate appetite and ease digestive complaints. Modern scientific evidence supporting any of these uses is very limited, and its safety has not been well studied, so use caution and talk with a pharmacist or doctor before trying it.

Marsdenia condurango · Apocynaceae · Dried bark · Tincture, fluid extract, tea (decoction), homeopathic preparations

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

Condurango: dosing

There is no well-established or standardized dose of condurango. Traditional preparations included tinctures, fluid extracts, and bark teas, but the amounts vary widely between products.If you choose to use a condurango product, follow the directions on the label and do not exceed them.

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

Read the full Condurango monograph & all interactions
Medication

About Vardenafil

What Is Vardenafil Used For?

Brand names: Levitra, Staxyn

Vardenafil tablets and orally disintegrating tablets are both indicated for the treatment of erectile dysfunction — difficulty getting or keeping an erection firm enough for sex.

Sexual stimulation is required for vardenafil to work. It does not cause an erection on its own.

See full Vardenafil drug information
Keep checking

Other Drugs & Condurango

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

0Major
0Moderate
0Minor
2,829No known interaction
2,829 No interaction
No interaction 2,829 drugs checked — show the list

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

Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Condurango list.

See the full Condurango interactions page
See every supplement checked against Vardenafil, ranked by severity
Evidence & sources

Condurango References

The 1 sources that drive our Condurango monograph — publicly available pages from reputable medical and government organizations. Every link was verified to work before publishing. Condurango is not covered by the licensed Natural Medicines interaction database, so its page cites these public sources directly.

  1. Herbs at a Glance — NIH NCCIH Source

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 Condurango and Vardenafil Together: Common Questions

Is it safe to take Condurango with Vardenafil?
We do not list a known interaction between Condurango and Vardenafil. 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.
Does Vardenafil interact with any supplements?
Yes. Vardenafil has documented interactions with 144 supplements in our database — Condurango is not one of them. The Vardenafil 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

Condurango monograph Uses, safety profile, and every drug interaction in one place Vardenafil drug information The full plain-English guide to this medication Vardenafil supplement interactions Every supplement checked against Vardenafil, 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 1 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Vardenafil and Condurango?

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.