SAFE
Cetraria islandica
Cetraria islandica (Iceland moss lichen)
Possibly Safe
V2 Verified
Botanicals
PubMed Studies
1
About
Lichen with demulcent, immunostimulant, and antimicrobial properties. Rich in mucilaginous polysaccharides. Used for respiratory and GI complaints.
How it works (mechanism of action)
Acts on cellular signalling pathways relevant to the documented clinical indications. Contains bioactive compounds with enzyme-modulating, receptor-binding, or antioxidant properties studied in peer-reviewed literature.
👥 Safety by Population
🚫 Contraindications & Warnings
Generally safe. Lichen: may contain environmental pollutants (heavy metals) from air quality. Liver toxicity: usnic acid in some lichens (not primary in Iceland moss). Autoimmune: mild immunostimulant.
🏷️ Other Names
Cetraria islandica (Iceland moss lichen)