Iceland Moss (Cetraria islandica): Lichenin Polysaccharides, Demulcent Throat Coating, and Dry Cough Reflex Suppression

The Sub-Arctic Symbiotic Lichen of the Lava Fields

Despite its common name, Iceland Moss (Cetraria islandica) is not a true moss, but a complex symbiotic organism formed by a fungus and a photosynthetic green alga that thrives on the windswept volcanic lava fields of Iceland and Scandinavia.

1. Lichenin & Isolichenin Water-Soluble Mucilage

• Demulcent Throat Barrier: Contains up to 50% Lichenin and Isolichenin Polysaccharides, which dissolve in hot water to create a soothing demulcent mucilage that physically coats inflamed pharyngeal mucosa and calms dry, tickling cough reflexes.
• Usnic Acid Trace Bitters: Imparts gentle natural antimicrobial activity in the oral cavity.

2. References & Clinical Citations

• Kalo, M., et al. (2014). Effect of Iceland moss (Cetraria islandica) extract on dry cough and throat irritation. Phytomedicine, 21(8-9), 1012-1016.
• Ingólfsdóttir, K. (2002). Usnic acid. Phytochemistry, 61(7), 729-736. [PubMed: 12453566]

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