Drug & supplement interaction

Iceland Moss + Ribavirin Aerosol

Ribavirin Aerosol brand name: Virazole.

No Known Interaction
The bottom line No known interaction

We found no known interaction between Iceland Moss and Ribavirin Aerosol 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 Ribavirin Aerosol states a food rule worth keeping to.

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Interaction report

Iceland Moss and Ribavirin Aerosol

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 Ribavirin Aerosol and Iceland Moss 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 Iceland Moss at all — not against Ribavirin Aerosol, 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.

Iceland Moss safety at a glance

Iceland Moss overall Use caution Generally well tolerated short-term, but human evidence is limited and quality varies between products.
Pregnancy Possibly Unsafe When used orally; avoid Iceland moss due to the potential for lead contamination. Read the full pregnancy detail
Breastfeeding Possibly Unsafe When used orally; avoid Iceland moss due to the potential for lead contamination. Read the full breastfeeding detail

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center) — the full detail is in the Special populations card below. Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Ribavirin Aerosol and Iceland Moss? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

What Ribavirin Aerosol’s Own FDA Label Lists

This is not an interaction — none of it involves Iceland Moss. These are the most notable effects listed in the ADVERSE REACTIONS section of Ribavirin Aerosol’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. 10 of them are worth acting on rather than waiting out — marked below.

  • A change in thyroid levels Worth acting on
  • Anemia Worth acting on mentioned in 13.1% of FDA reports for Ribavirin Aerosol
  • Thoughts of self-harm Worth acting on
  • Pancreatitis Worth acting on
  • Chest pain Worth acting on
  • Low mood Worth acting on
  • A low platelet count Worth acting on
  • Shortness of breath Worth acting on
  • A low white blood cell count Worth acting on
  • A higher chance of infection Worth acting on

Showing the 10 most notable of 41 label-listed effects — ranked by how unusual each one is across medicines generally, with serious effects weighted up.

From the ADVERSE REACTIONS section of the FDA label for Ribavirin Aerosol. Read the label on DailyMed › Where a percentage is shown, it is the share of 63,877 voluntary FDA FAERS reports for Ribavirin Aerosol that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. Iceland Moss’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no Iceland Moss side to compare — that is a limit of the record, not a statement that Iceland Moss has no side effects.

Special populations

Iceland Moss in Pregnancy & Breastfeeding

Pregnancy And Lactation Possibly Unsafe

When used orally; avoid Iceland moss due to the potential for lead contamination.

DISCLAIMER: This tool is intended for informational purposes only, and should not be interpreted as specific medical advice. Patients should consult with a qualified healthcare provider before making decisions about therapies and/or health conditions.© 2026 Therapeutic Research Center

How to take them

Some Ribavirin Aerosol Products Have a Food Rule — Iceland Moss Should Not Break It

At least one FDA label for a product containing Ribavirin Aerosol says to take it with food. If you take Iceland Moss on an empty stomach out of habit, keep them separate — and take Ribavirin Aerosol 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 Ribavirin Aerosol 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.

Ribavirin capsules should be taken with food [see Clinical Pharmacology (12.3) ].

From the Dosage and Administration section of the FDA label we read for Ribavirin Aerosol — where that label names a specific product, the instruction is that product's. Read the label on DailyMed ›

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.

Everything else you take

See Every Supplement That Interacts With Ribavirin Aerosol

This page covers Iceland Moss only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Ribavirin Aerosol 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 Ribavirin Aerosol page

“Ribavirin Aerosol (Virazole) is an inhaled antiviral used mostly in hospitals against severe RSV infection, and with an infection that serious, losing drug exposure is not a small problem, so I would approach this list with genuine care. Its one major-rated interaction, activated charcoal, can pull ribavirin out of the body even though…”

Reviewed by 2 · Jul 18, 2026

Open the Ribavirin Aerosol interaction page

One more smart check

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

We hold 56 real supplement products containing Iceland Moss, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Iceland Moss. Even though Iceland Moss itself has no known interaction with Ribavirin Aerosol, 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 Iceland Moss and Ribavirin Aerosol 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 Iceland Moss
Steady interest

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

29 days ago today
Medication Ribavirin Aerosol
Top 10%

#157 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 Iceland Moss reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Iceland Moss and Ribavirin Aerosol 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 Iceland Moss

What is Iceland Moss?

  • Dry cough and throat irritation
  • Sore or inflamed throat and mouth
  • Digestive upset and loss of appetite
  • Bronchial irritation
  • Soothing mucous membranes

Iceland moss is a lichen traditionally used as a soothing remedy for dry cough and throat or mouth irritation, mainly because of its mucilage (gel-forming fibers). High-quality human studies are limited, so its benefits are not well proven. It is generally considered well tolerated for short-term use, but pregnant and breastfeeding people should avoid it due to a lack of safety data.

Cetraria islandica · Parmeliaceae · Whole lichen (thallus) · Tea, lozenges, liquid extracts, tinctures, capsules, syrups

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

Iceland Moss: dosing

There is no official, standardized dose of Iceland moss. Traditional preparations include a tea made from the dried lichen, lozenges, and liquid extracts, and the right amount depends on the specific product.The safest approach is to follow the directions on the product label and not exceed the recommended amount.

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

Read the full Iceland Moss monograph & all interactions
Medication

About Ribavirin

What Is Ribavirin Used For?

Brand name: Virazole

Ribavirin comes in different forms for different uses. Ribavirin capsules are used in combination with interferon alfa-2b (pegylated or non-pegylated) to treat chronic hepatitis C (CHC) in patients 3 years and older with compensated liver disease. Ribavirin tablets are used in combination with PEGASYS® (peginterferon alfa-2a) to treat chronic hepatitis C in patients 5 years and older with compensated liver disease who have not previously been treated with interferon — including adults who also have HIV. Ribavirin for inhalation solution is a separate product used to treat hospitalized infants and young children with severe lower respiratory tract infections caused by respiratory syncytial virus (RSV).

Ribavirin must never be used alone to treat hepatitis C — it only works as part of combination therapy. Only the most severe RSV infections requiring hospitalization should be treated with the inhaled form; mild RSV illness in children does not require this treatment.

See full Ribavirin drug information
Keep checking

Other Drugs & Iceland Moss

Browse every other medication we’ve checked against Iceland Moss — 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
No interaction 2,829 drugs checked — show the list
Evidence & sources

Iceland Moss References

The 3 references that drive our Iceland Moss 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. Tyler VE. Herbs of Choice. Binghamton, NY: Pharmaceutical Products Press, 1994.
  2. McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
  3. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.

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 Iceland Moss and Ribavirin Aerosol Together: Common Questions

Is it safe to take Iceland Moss with Ribavirin Aerosol?
We do not list a known interaction between Iceland Moss and Ribavirin Aerosol. 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 Iceland Moss and Ribavirin Aerosol at the same time of day?
At least one FDA label for a product containing Ribavirin Aerosol says to take it with food. If you take Iceland Moss on an empty stomach out of habit, keep them separate and take Ribavirin Aerosol with a meal where the label says to. Food instructions belong to the product rather than the ingredient — two Ribavirin Aerosol products can differ — so check the directions on your own box. This is about absorption, not an interaction.
Does Ribavirin Aerosol interact with any supplements?
Yes. Ribavirin Aerosol has documented interactions with 17 supplements in our database — Iceland Moss is not one of them. The Ribavirin Aerosol interaction page linked on this page lists every one, ranked by severity.

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

Still Have a Question About Ribavirin Aerosol and Iceland Moss?

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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.