Drug & supplement interaction

American White Water Lily + Vardenafil

Vardenafil brand names: Levitra, Staxyn.

No Known Interaction
Medically reviewed by · Updated June 2026 · Pair last verified Oct 4, 2026
The bottom line No known interaction

We found no known interaction between American White Water Lily 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

American White Water Lily 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 American White Water Lily 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 American White Water Lily 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.

American White Water Lily safety at a glance

American White Wat... overall Use caution Little modern safety data exists, so use cautiously and prefer topical traditional uses over swallowing large amounts.
Pregnancy Avoid Safety has not been studied, so it is best avoided during pregnancy.
Breastfeeding Avoid No reliable safety information is available, so avoid while breastfeeding.

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

Still wondering about combining Vardenafil and American White Water Lily? 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 American White Water Lily. 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. American White Water Lily’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no American White Water Lily side to compare — that is a limit of the record, not a statement that American White Water Lily has no side effects.

From our Q&A

Questions About American White Water Lily 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 American White Water Lily 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 American White Water Lily 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

How much people look this up

Where American White Water Lily 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 American White Water Lily
Steady interest

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

29 days ago today
Medication Vardenafil
Top 25%

#561 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. American White Water Lily 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 American White Water Lily reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified October 4, 2026. The American White Water Lily 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 American White Water Lily

What is American White Water Lily?

American White Water Lily
  • Sore throat and mouth irritation
  • Vaginal irritation (as a wash or douche)
  • Skin sores, burns, and boils (topical poultice)
  • Diarrhea (astringent)
  • Minor wound care

American white water lily is a North American aquatic plant whose root has a long history of traditional use, mostly as an astringent for skin, mouth, and vaginal complaints. There is very little modern human research to confirm any of these uses, so it should be viewed as a folk remedy rather than a proven treatment. Talk to your pharmacist or doctor before using it, and avoid it if you are pregnant or breastfeeding.

Nymphaea odorata · Nymphaeaceae · Rhizome (root) and flowers; sometimes leaves · Dried root, powder, tea, liquid extract, poultice, and topical washes or gargles

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

American White Water Lily: dosing

There is no established standard dose for American white water lily. Traditional use involved preparing the root as a tea, wash, gargle, or poultice, but exact amounts were not standardized and varied widely.If you choose to use a commercial product, follow the directions on the label and do not exceed them.

From our American White Water Lily monograph — the full record covers uses, side effects and every documented interaction.

Read the full American White Water Lily 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.

Both the standard tablet form (Vardenafil, Vardenafil Hydrochloride) and the orally disintegrating tablet form (Vardenafil) are FDA-approved for this use. Sexual stimulation is required for vardenafil to work.

Most-Reported Side Effects for Vardenafil

From FAERS, the FDA’s public side-effect reporting system (0 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Dizziness 29 reports
Chronic kidney disease 28 reports
Fatigue 27 reports
Enterocolitis infectious 26 reports
Headache 26 reports
See full Vardenafil drug information
Keep checking

Other Drugs & American White Water Lily

Browse every other medication we’ve checked against American White Water Lily — 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 American White Water Lily 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 American White Water Lily list.

See the full American White Water Lily interactions page
See every supplement checked against Vardenafil, ranked by severity
Evidence & sources

American White Water Lily References

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

  1. Using Dietary Supplements Wisely — 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 American White Water Lily and Vardenafil Together: Common Questions

Is it safe to take American White Water Lily with Vardenafil?
We do not list a known interaction between American White Water Lily 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 — American White Water Lily 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

American White Water Lily 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 American White Water Lily?

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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.