Drug & supplement interaction

Cypress + Rimantadine

Rimantadine brand name: Flumadine.

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

We found no known interaction between Cypress and Rimantadine 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 two are separately associated with some of the same side effects, which would make a new symptom harder to attribute to one or the other.

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Interaction report

Cypress and Rimantadine

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 Rimantadine and Cypress 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.

Cypress safety at a glance

Cypress overall Use caution Often used externally or in aromatherapy; the essential oil should not be swallowed and human safety data are limited.
Pregnancy Avoid Not enough safety information, so it is best to avoid use during pregnancy.
Breastfeeding Avoid Not enough safety information, so it is best to avoid use while breastfeeding.

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

Still wondering about combining Rimantadine and Cypress? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Rimantadine

Interactions in our licensed database are recorded against drug classes, not just single drug names. Rimantadine is filed under a single classification — oral drugs. Cypress has documented interactions with 1 drug class — the most serious being anticoagulant/antiplatelet drugs (moderate) — and none of Rimantadine’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

Cypress Does Interact With Other Medications

Cypress has 122 moderate known drug interactions in our database — Rimantadine isn’t one of them. If you take anything else, check it against the full list below.

Moderate 122 No known interaction 2,708 (incl. Rimantadine)
Taking anything else?

Check Another of Your Medications Against Cypress

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

What to actually watch for

No Interaction Found — But Data Suggests Cypress and Rimantadine May Share a Side Effect

This is not an interaction. Neither one changes how your body handles the other, and nothing here says they react together. What our sources do show is that each has separately been linked to the effects below — so taking both can make those effects more likely to turn up, and harder to pin on one or the other if they do.

  • A skin rash Additional detail

    Cypress

    “Airborne cypress pollen is a common cause of allergy-related respiratory and ocular symptoms in some people. A case of allergic contact dermatitis to the resin-impregnated leaves of a cypress tree has occurred in a patient with a history of cutaneous reactions to adhesive bandages, likely due to a cross-sensitivity with colophonium.”

    Cypress · Natural Medicines adverse-effect record, reported in allergic rhinitis (hay fever).

    5 sources cited
    1. 46912. Geller-Bernstein, C., Waisel, Y., and Lahoz, C. Environment and sensitization to cypress in Israel. Allerg.Immunol.(Paris) 2000;32(3):92-93.
    2. 46915. Papa, G., Romano, A., Quaratino, D., Di Fonso, M., Viola, M., Artesani, M. C., Sernia, S., Di Gioacchino, M., and Venuti, A. Prevalence of sensitization to Cupressus sempervirens: a 4-year retrospective study. Sci.Total Environ. 4-10-2001;270(1-3):83-87. PubMed
    3. 46925. Togawa, A., Panzani, R. C., Garza, M. A., Kishikawa, R., Goldblum, R. M., and Midoro-Horiuti, T. Identification of italian cypress (Cupressus sempervirens) pollen allergen Cup s 3 using homology and cross-reactivity. Ann.Allergy Asthma Immunol. 2006;97(3 PubMed
    4. 46930. De Luca, A., Graziani, E., Anticoli, S., Simeoni, S., Terzano, C., and Mannino, F. Respiratory allergy to Cupressus sempervirens in Rome. Allergol.Immunopathol.(Madr.) 1997;25(5):229-232.
    5. 106005. Samaran Q, Clark E, Dereure O, Raison-Peyron N. Allergic contact dermatitis to Cupressus sempervirens resin and cross-reaction with colophonium. Contact Dermatitis 2020;83(1):33-35.

    Rimantadine

    Listed in the ADVERSE REACTIONS section of the FDA label for Rimantadine. Read the label on DailyMed ›

Effects for Rimantadine come from the ADVERSE REACTIONS section of its FDA label; effects for Cypress come from the Natural Medicines adverse-effect record, quoted above. Wording is matched across sources by our own clinical vocabulary, so treat this as a prompt to pay attention, not a diagnosis.

Overlapping uses

What Rimantadine Is Prescribed For, and What Cypress Has Been Studied For

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

Rimantadine is prescribed for: Rimantadine tablets are used to prevent influenza A in adults and in children 1 to 16 years old. They are also used to treat influenza A illness in adults (17 and older). Treatment works best when started within 48 hours after symptoms begin. It is not approved to treat flu in children 16 and younger.

Cypress has been studied for:

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

    Cypress for influenza

    Although there has been interest in using oral cypress for influenza, there is insufficient reliable information about the clinical effects of cypress 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 Rimantadine on your own; if you are taking Cypress 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 Rimantadine

This page covers Cypress only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Rimantadine page lists 17 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Coffee Charcoal (moderate), European Mandrake (moderate), Glucomannan (moderate) and Guar Gum (moderate).

By severity: 1 major · 7 moderate · 9 minor.

From our pharmacist’s overview on the Rimantadine page

“Rimantadine (Flumadine) is an oral antiviral for influenza A, and because a flu course lasts only days, the drug has to be absorbed properly every single time you swallow it. That is exactly where all 17 supplement interactions on file hit, and it is why this list deserves genuine attention rather than a shrug.”

Reviewed by 2 · Jul 18, 2026

Open the Rimantadine interaction page

One more smart check

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

We hold 13 real supplement products containing Cypress, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Cypress. Even though Cypress itself has no known interaction with Rimantadine, 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 Cypress and Rimantadine 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 Cypress
Steady interest

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

29 days ago today
Medication Rimantadine
Steady interest

#1,619 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 Cypress reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified October 4, 2026. The Cypress and Rimantadine 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 Cypress

What is Cypress?

  • Circulation and varicose veins
  • Coughs and respiratory complaints
  • Excess sweating
  • Skin and minor wounds
  • Aromatherapy for relaxation

Cypress comes from the Mediterranean cypress tree and is most often used as an essential oil in aromatherapy or skin care, and traditionally for circulation and respiratory complaints. High-quality human evidence for these uses is very limited, so it should not replace proven treatments. The essential oil is for external use only and should be diluted, and you should talk with your pharmacist or doctor before using it.

Cupressus sempervirens · Cupressaceae · Cones (galbuli), leaves/needles, and essential oil · Essential oil, extracts, capsules, and dried plant material

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

Cypress: dosing

There is no standardized or well-established dose for cypress. Products vary widely in strength and form, so the right amount depends on how it is being used.For essential oil used on the skin, it should always be diluted in a carrier oil rather than applied straight. Do not take cypress essential oil by mouth.

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

Read the full Cypress monograph & all interactions
Medication

About Rimantadine

What Is Rimantadine Used For?

Brand name: Flumadine

Rimantadine tablets are used to prevent influenza A in adults and in children 1 to 16 years old.

They are also used to treat influenza A illness in adults (17 and older). Treatment works best when started within 48 hours after symptoms begin. It is not approved to treat flu in children 16 and younger.

See full Rimantadine drug information
Keep checking

Other Drugs & Cypress

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

0Major
122Moderate
0Minor
2,707No known interaction
122 Moderate 2,707 No interaction
Moderate

122 interactions

Showing 60 of 122 moderate interactions — see all 122 on the Cypress page.

No interaction 2,707 drugs checked — show the list

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

Showing the 60 most looked-up of 2,707 medications checked with no known interaction — see the full Cypress list.

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

Cypress References

The 7 references that drive our Cypress 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. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
  2. Geller-Bernstein, C., Waisel, Y., and Lahoz, C. Environment and sensitization to cypress in Israel. Allerg.Immunol.(Paris) 2000;32(3):92-93.
  3. Papa, G., Romano, A., Quaratino, D., Di Fonso, M., Viola, M., Artesani, M. C., Sernia, S., Di Gioacchino, M., and Venuti, A. Prevalence of sensitization to Cupressus sempervirens: a 4-year retrospective study. Sci.Total Environ. 4-10-2001;270(1-3):83-87. PubMed
  4. Togawa, A., Panzani, R. C., Garza, M. A., Kishikawa, R., Goldblum, R. M., and Midoro-Horiuti, T. Identification of italian cypress (Cupressus sempervirens) pollen allergen Cup s 3 using homology and cross-reactivity. Ann.Allergy Asthma Immunol. 2006;97(3 PubMed
  5. De Luca, A., Graziani, E., Anticoli, S., Simeoni, S., Terzano, C., and Mannino, F. Respiratory allergy to Cupressus sempervirens in Rome. Allergol.Immunopathol.(Madr.) 1997;25(5):229-232.
  6. Ulusal BG, Arikan S, Durusoy C. Anticoagulant effect of Cupressus sempervirens. Phytother Res. 2007 Nov;21(11):1116.
  7. Samaran Q, Clark E, Dereure O, Raison-Peyron N. Allergic contact dermatitis to Cupressus sempervirens resin and cross-reaction with colophonium. Contact Dermatitis 2020;83(1):33-35.

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 Cypress and Rimantadine Together: Common Questions

Is it safe to take Cypress with Rimantadine?
We do not list a known interaction between Cypress and Rimantadine. 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.
Do Cypress and Rimantadine have any of the same side effects?
Yes — our sources link each of them separately to one of the same effects. That is not an interaction: neither changes how your body handles the other. It does mean that if one of those effects turns up, it can be harder to tell which one is behind it. They are listed on this page with the source behind each.
Are Cypress and Rimantadine 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 Cypress in each. That is a conversation for your prescriber, especially if Rimantadine is being adjusted to a target.
How was the Cypress and Rimantadine combination checked?
Interactions in our licensed database are recorded against drug classes. Rimantadine is filed under 1 classification, and Cypress has documented interactions with 1 drug class — none of Rimantadine'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 Cypress interact with any other medications?
Yes. Cypress has 122 documented drug interactions in our database — Rimantadine 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 Rimantadine interact with any supplements?
Yes. Rimantadine has documented interactions with 17 supplements in our database — Cypress is not one of them. The Rimantadine 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

Cypress monograph Uses, safety profile, and every drug interaction in one place Rimantadine drug information The full plain-English guide to this medication Rimantadine supplement interactions Every supplement checked against Rimantadine, 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 7 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Rimantadine and Cypress?

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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.