Drug & supplement interaction

Polypodium Leucotomos + Factor 7a

Factor 7a brand name: NovoSeven RT.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 13, 2026
The bottom line No known interaction

We found no known interaction between Polypodium Leucotomos and Factor 7a 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

Polypodium Leucotomos and Factor 7a

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 Factor 7a and Polypodium Leucotomos 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.

Polypodium Leucotomos safety at a glance

Polypodium Leucoto... overall Use caution Generally well tolerated in studies, but long-term safety is not well established.
Pregnancy Avoid There is not enough safety data, so it is best avoided during pregnancy.
Breastfeeding Avoid Safety while breastfeeding is unknown, so avoidance is the safer choice.

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

Still wondering about combining Factor 7a and Polypodium Leucotomos? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
Keep it in perspective

Polypodium Leucotomos Does Interact With Other Medications

Polypodium Leucotomos has 643 minor known drug interactions in our database — Factor 7a isn’t one of them. If you take anything else, check it against the full list below.

Minor 643 No known interaction 2,187 (incl. Factor 7a)
Taking anything else?

Check Another of Your Medications Against Polypodium Leucotomos

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

What to actually watch for

What Polypodium Leucotomos Itself Has Been Linked To

This is not an interaction — nothing below involves Factor 7a. It is the side-effect record for Polypodium Leucotomos on its own, from the licensed Natural Medicines monograph. If something new turns up after you add Polypodium Leucotomos, this list is the first place to look.

  • Itching Additional detail

    “Orally, Polypodium leucotomos has rarely been associated with pruritus.”

    Polypodium Leucotomos · Natural Medicines adverse-effect record, reported in pruritus.

    1 source cited
    1. 101470. Goh CL, Chuah SY, Tien S, Thng G, Vitale MA, Delgado-Rubin A. Double-blind, placebo-controlled trial to evaluate the effectiveness of Polypodium leucotomos extract in the treatment of melasma in Asian skin: a pilot study. J Clin Aesthet Dermatol 2018;11(3

Everything above comes from the Natural Medicines adverse-effect record for Polypodium Leucotomos — expand a row for the licensed statement it rests on. We haven’t matched Factor 7a to its FDA label in our system yet, so we can’t compare its own side-effect list here — the leaflet that comes with your prescription is the authoritative list for Factor 7a.

One more smart check

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

We hold 26 real supplement products containing Polypodium Leucotomos, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Polypodium Leucotomos. Even though Polypodium Leucotomos itself has no known interaction with Factor 7a, 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 Polypodium Leucotomos and Factor 7a 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 Polypodium Leucotomos
Steady interest

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

29 days ago today
Medication Factor 7a
Top 25%

#347 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 Polypodium Leucotomos reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Polypodium Leucotomos and Factor 7a 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 Polypodium Leucotomos

What is Polypodium Leucotomos?

  • Sun sensitivity and sunburn protection
  • Skin conditions like vitiligo and melasma
  • Polymorphic light eruption
  • Skin aging and photoaging
  • Atopic dermatitis support

Polypodium leucotomos is a fern extract taken by mouth, mostly studied as an add-on to (not a replacement for) sunscreen and for certain light-triggered skin conditions. Some early research is promising for reducing sun sensitivity, but the evidence is still limited and it should not replace standard sun protection. Talk with your pharmacist or doctor before starting it.

Polypodium leucotomos · Polypodiaceae · Leaves (fronds) and rhizome extract · Capsules, tablets, oral supplements

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

Polypodium Leucotomos: dosing

There is no official or standardized dose for Polypodium leucotomos. Do not assume that taking more will give better or faster results.

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

Read the full Polypodium Leucotomos monograph & all interactions
Keep checking

Other Drugs & Polypodium Leucotomos

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

0Major
0Moderate
643Minor
2,186No known interaction
643 Minor 2,186 No interaction
Minor

643 interactions

Showing 60 of 643 minor interactions — see all 643 on the Polypodium Leucotomos page.

No interaction 2,186 drugs checked — show the list

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

Showing the 60 most looked-up of 2,186 medications checked with no known interaction — see the full Polypodium Leucotomos list.

See the full Polypodium Leucotomos interactions page
See every supplement checked against Factor 7a, ranked by severity
Evidence & sources

Polypodium Leucotomos References

The 2 references that drive our Polypodium Leucotomos 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. Goh CL, Chuah SY, Tien S, Thng G, Vitale MA, Delgado-Rubin A. Double-blind, placebo-controlled trial to evaluate the effectiveness of Polypodium leucotomos extract in the treatment of melasma in Asian skin: a pilot study. J Clin Aesthet Dermatol 2018;11(3
  2. Shinya K, Nishimura Y, Ryu K, et al. Short-term administration of Polypodium leucotomos extract does not inhibit CYP3A4-mediated metabolism of midazolam in healthy subjects: an open-label, two-period, fixed-sequence study. Int J Dermatol 2022.

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 Polypodium Leucotomos and Factor 7a Together: Common Questions

Is it safe to take Polypodium Leucotomos with Factor 7a?
We do not list a known interaction between Polypodium Leucotomos and Factor 7a. 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 Polypodium Leucotomos interact with any other medications?
Yes. Polypodium Leucotomos has 643 documented drug interactions in our database — Factor 7a is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Where next

Keep Exploring

Polypodium Leucotomos monograph Uses, safety profile, and every drug interaction in one place Factor 7a supplement interactions Every supplement checked against Factor 7a, 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 Factor 7a and Polypodium Leucotomos?

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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.