Synopsis

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

Marshmallow (Althaea officinalis) root has a long-standing history of use in traditional herbal medicine for soothing digestive discomfort, including symptoms associated with acid indigestion such as heartburn and irritation of the esophagus. The root contains mucilage, a gel-like substance that is believed to coat and protect mucous membranes in the digestive tract, thereby reducing irritation caused by stomach acid. Traditional European herbalists have recommended marshmallow root tea or extracts for centuries as a demulcent, which means it forms a protective film over inflamed tissues.

While there are a few laboratory studies suggesting that marshmallow mucilage can shield tissues from irritants and stimulate regeneration of epithelial cells, robust clinical trials in humans specifically addressing acid indigestion or gastroesophageal reflux are lacking. Most of the supporting evidence comes from historical usage and small, non-randomized studies. For example, marshmallow preparations have shown some benefit in easing sore throats and mild gastrointestinal irritation, but direct, high-quality evidence for acid indigestion is limited. Thus, marshmallow's use is primarily justified by tradition rather than strong scientific validation. Nonetheless, its safety profile is favorable, and it is still included in some modern herbal formulations for digestive comfort, often as a complementary therapy rather than a primary treatment.

More about Marshmallow
More about Acid Indigestion

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