No known drug interactions for the matched ingredients — not a guarantee none exist. Check your meds →
Dietary supplement

Usnea Lichen Moss Ingredients & Drug Interactions

by TerraVita

Usnea Lichen Moss label
See full label image
Liquid Category: Botanical
No known interaction
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Usnea Lichen Moss against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line No known interaction

Usnea Lichen Moss is a dietary supplement by TerraVita with 1 active ingredient. Its ingredients are commonly taken for sore throat, skin and wound care, respiratory infections.We don’t currently list a known drug interaction for its mapped ingredients — but that doesn’t guarantee none exist, so always confirm with your pharmacist.

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HelloPharmacist Scorecard of Usnea Lichen Moss by TerraVita

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Jul 11, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

This product contains one active ingredient: usnea lichen moss in glycerite liquid extract form. Usnea is a type of lichen that's been used traditionally for various purposes, though the evidence backing those uses is still limited.

The liquid extract is combined with glycerin, which is an inactive ingredient that helps preserve and deliver the extract.

Does it work?

Couldn't assess
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Not assessable

This is a single-ingredient Usnea product and its label doesn't state a use — see Usnea's own graded uses on its monograph.

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.

The evidence for usnea lichen moss isn't established enough to rate at this point. Our data shows insufficient reliable evidence for cough, wound healing, acute pain, tinea pedis (athlete's foot), and obesity.

That doesn't mean it won't help — it means the studies either aren't there yet or aren't conclusive enough. If you're thinking about this product for any of those purposes, talk with us about whether the evidence is strong enough for your situation.

The evidence, ingredient by ingredient Usnea

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Here's what you need to know: when applied to the skin, usnea is generally well tolerated. Taken by mouth, though, it's a different story — the usnic acid it contains has been linked to liver damage, which is a serious concern.

Topically, some people experience contact dermatitis, local irritation, or conjunctivitis (eye inflammation) from usnic acid. The safety data during pregnancy and while breastfeeding isn't there, so the facts advise against use in both cases — talk with your doctor or pharmacist about whether this is right for you personally.

Side effects, ingredient by ingredient Usnea

Meds to double-check

No known interactions
Known Interaction Concern · database check
No known interactions

No medication interactions are currently documented for the matched ingredients — that isn't a guarantee none exist.

Why this rating?
  • None of the 1 matched ingredient has a documented medication interaction on file.

No interactions are documented in our data for this ingredient. Still, run your medications through the tool on this page if you'd like to be certain.

The bottom line

Scorecard at a glanceFully disclosed formula with no assessable stated purpose. No medication interactions are currently documented, and safety information is well characterized.

If you're considering this for topical use (on skin or a wound), it's generally well tolerated, though patch-test first for allergic reaction. If you're thinking of taking it by mouth, the liver-damage risk from usnic acid is a real concern — check with your pharmacist before starting, especially if you have any liver issues.

Skip it during pregnancy and breastfeeding.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Dec 13, 2022.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Usnea Lichen Moss, straight from the product label.

Brand TerraVita
Barcode (UPC) 064435234119
Net contents 1 Fluid Ounce(s); 30 mL
Market status On market
Date entered into DSLD Dec 13, 2022
DSLD ID 279388
Product type Botanical
Supplement form Liquid
Dietary claims / uses All Other
Intended target group(s) Adult (18 - 50 Years)
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Usnea Lichen Moss by TerraVita, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
25 Drop(s)
Maximum serving Sizes:
40 Drop(s)
Servings per container
227
UPC/BARCODE
064435234119
IngredientAmount% DV
Usnea Lichen Moss Glycerite Liquid Extract0.13 mL--

Other ingredients: Glycerin

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Brand IP Statement(s)

Copyright 2018 TerraVita - Distributed by ZooScape LLC, All Rights Reserved.

Formula

Glycerite liquid extract (1:5)

Formulation

Alcohol free

No flavor

Suggested/Recommended/Usage/Directions

Suggested Use: Take 25-40 drops of extract in a small amount of warm water 3-4 times daily. Shake well before using.

Precautions

Keep away from children.

Do not use if safety seal around cap is broken or missing.

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Usnea Lichen Moss by TerraVita label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Usnea Lichen Moss label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Usnea Lichen Moss by TerraVita

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size25 Drop(s) Dosage formLiquid Servings per container227 Amounts shown are per serving.

Usnea Lichen Moss Glycerite Liquid Extract

No known
interactions
0.13 mL per serving

Usnea is a lichen used in traditional herbal medicine, mainly for sore throats, skin infections, and as a general antimicrobial. Laboratory studies su...

Usnea Lichen Moss Glycerite Liquid Extract monograph & interactions

Other (inactive) ingredients: Glycerin. These complete the product’s ingredient list but are not active constituents.

Interaction report

Usnea Lichen Moss by TerraVita Drug Interactions

We don’t currently list any known drug interactions for the mapped ingredients in Usnea Lichen Moss. This doesn’t guarantee none exist — always confirm with your pharmacist before combining a supplement with your medications.

The maker

Brand information

Manufacturer and brand details for Usnea Lichen Moss, from the product label.

TerraVita

See all TerraVita products
Name
ZooScape LLC
Phone Number
844-449-0444
Web Address
www.ZooScape.com
Pharmacist Counseling Corner

Usnea Lichen Moss by TerraVita: Common Questions

Does Usnea Lichen Moss by TerraVita interact with any medications?
We do not currently list a known interaction for the mapped ingredients in Usnea Lichen Moss. This does not guarantee none exist, so confirm with your pharmacist.
How can one product interact with so many drugs?
Usnea Lichen Moss contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Is it safe to take this by mouth?
Not ideal. Usnea contains usnic acid, which has been linked to liver damage when taken orally. Topical use (on skin) is much better tolerated. If you're considering taking it by mouth, talk with your pharmacist first, especially if you have liver concerns.
What are the side effects?
When applied to skin, it's usually gentle, though some people get contact dermatitis, local irritation, or eye irritation if it touches the eyes. Taken by mouth, the big concern is liver damage from the usnic acid — there's limited data on other oral side effects because it's not studied as much.
Can I use this while pregnant or breastfeeding?
No — there isn't enough safety data, so the facts advise against it in both cases. Talk with your doctor or pharmacist about what's safe for you during pregnancy or while nursing.
Does it actually work for cough, pain, or wound healing?
The evidence isn't there yet — we have insufficient reliable evidence to rate it for any of those uses. That means the studies are either missing or not strong enough to say one way or the other. Talk with us about whether this makes sense for what you're treating.
What's in it besides the active ingredient?
Glycerin — that's an inactive ingredient (a preservative and delivery base). The active part is the usnea lichen moss extract.

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

Not sure if Usnea Lichen Moss is safe with your meds?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Usnea Lichen Moss label
Go deeper

The Full Monographs Behind Usnea Lichen Moss’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Usnea

Usnea is a lichen used in traditional herbal medicine, mainly for sore throats, skin infections, and as a general antimicrobial. Laboratory studies suggest its main compound, usnic acid, can...

Read the full Usnea monograph →
Sources

Sources & How We Checked

Usnea Lichen Moss's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 10 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Usnea 10 references
  1. Favreau JT, Ryu Ml, Braunstein G, et al. Severe hepatotoxicity associated with the dietary supplement LipoKinetix. Ann Intern Med 2002;136:590-5. PubMed
  2. Ingolfsdottir K. Usnic acid. Phytochemistry 2002;61:729-36.
  3. Scirpa, P., Scambia, G., Masciullo, V., Battaglia, F., Foti, E., Lopez, R., Villa, P., Malecore, M., and Mancuso, S. [A zinc sulfate and usnic acid preparation used as post-surgical adjuvant therapy in genital lesions by Human Papillomavirus]. Minerva Gin
  4. Mitchell, J. C. Allergy to lichens. Allergic contact dermatitis from usnic acid produced by lichenized fungi. Arch Dermatol 1965;92(2):142-146.
  5. Durazo, F. A., Lassman, C., Han, S. H., Saab, S., Lee, N. P., Kawano, M., Saggi, B., Gordon, S., Farmer, D. G., Yersiz, H., Goldstein, R. L., Ghobrial, M., and Busuttil, R. W. Fulminant liver failure due to usnic acid for weight loss. Am.J Gastroenterol. PubMed
  6. Neff, G. W., Reddy, K. R., Durazo, F. A., Meyer, D., Marrero, R., and Kaplowitz, N. Severe hepatotoxicity associated with the use of weight loss diet supplements containing ma huang or usnic acid. J Hepatol. 2004;41(6):1062-1064. PubMed
  7. Hsu, L. M., Huang, Y. S., Chang, F. Y., and Lee, S. D. 'Fat burner' herb, usnic Acid, induced acute hepatitis in a family. J Gastroenterol.Hepatol. 2005;20(7):1138-1139. PubMed
  8. Arneborn, P., Jansson, A., and Bottiger, Y. [Acute hepatitis in a woman after intake of slimming pills bought via Internet]. Lakartidningen 7-11-2005;102(28-29):2071-2072.
  9. Sanchez, W., Maple, J. T., Burgart, L. J., and Kamath, P. S. Severe hepatotoxicity associated with use of a dietary supplement containing usnic acid. Mayo Clin Proc 2006;81(4):541-544. PubMed
  10. Rafanelli, S., Bacchilega, R., Stanganelli, I., and Rafanelli, A. Contact dermatitis from usnic acid in vaginal ovules. Contact Dermatitis 1995;33(4):271-272. PubMed

See these in context on the Usnea monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

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