Synopsis

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

Blackthorn (Prunus spinosa), also known as sloe, has a long history of use in traditional European herbal medicine for various digestive complaints, including dyspepsia (indigestion). Historical sources and ethnobotanical records indicate that the fruits, flowers, and bark of blackthorn have been used as mild astringents and tonics to soothe the digestive tract, stimulate appetite, and relieve mild digestive discomfort. The use is primarily based on its astringent properties, attributed to its tannin content, which may help reduce inflammation or irritation of the gastrointestinal mucosa.

However, there is minimal clinical or pharmacological research supporting the efficacy of blackthorn specifically for dyspepsia. Most modern reviews and herbal compendia, such as the European Medicines Agency (EMA) monograph on Prunus spinosa, reference its traditional use for “mild digestive complaints” but do not cite controlled trials or robust scientific studies. Therefore, the use of blackthorn for dyspepsia is justified on the basis of tradition and long-standing folk practice, rather than scientific validation. The quality of evidence is low, and it is not commonly recommended in mainstream medical practice for this indication. Individuals should consult healthcare professionals before use, especially due to possible astringent effects and lack of standardization in preparations.

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