Icelandic Lichen in Herbal Medicine: Properties of Icelandic Lichen

Scientific name

Cetraria islandica

Family

Parmeliaceae

Origin

Mountainous terrain

Synonyms

Iceland lichen

Parts Used

Drug consisting of thalli

Chemical constituents

• Polysaccharides;
• Usnic acid;
• Lichen (bitter) acids;
• Mucilage.

Icelandic Lichen in Herbal Medicine: Properties of Icelandic Lichen

Usnic acid has bactericidal activity and mucilages have gastroprotective properties. Iceland lichen can be used as an anti-inflammatory for gargle against pharyngotonsillitis (mucilaginous extracts).

Contraindications

Avoid taking Icelandic lichen in case of gastritis and peptic ulcer, due to the presence of bitter principles, or in case of ascertained hypersensitivity to one or more components.

Pharmacological interactions

• NSAIDs;
• gastrointestinal drugs.

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