Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Iceland Moss (Cetraria islandica) has a long history of traditional use in European herbal medicine, especially in Nordic countries, for soothing the mucous membranes of the mouth, throat, and gastrointestinal tract. Its demulcent (mucilage-rich) properties have led to its use in folk remedies for conditions like acid indigestion, gastritis, and coughs. The mucilage in Iceland Moss coats irritated mucous membranes, which can provide symptomatic relief from burning or discomfort associated with acid indigestion. Historical texts and pharmacopeias from the 19th and 20th centuries frequently list Iceland Moss as a remedy for digestive complaints, particularly where inflammation or irritation is present. Modern scientific studies specifically targeting Iceland Moss for acid indigestion are limited. Some in vitro and animal studies suggest that its mucilage content can protect mucosal surfaces and may have mild anti-inflammatory effects, but robust clinical trials in humans are lacking. Therefore, its use for acid indigestion is justified primarily by tradition rather than strong scientific validation. Nevertheless, its safety profile is generally considered favorable when used as directed, and it remains an ingredient in some European herbal digestive preparations. As with many traditional remedies, more rigorous clinical research would be required to conclusively establish its efficacy for acid indigestion.

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