Synopsis

Source of validity: Traditional
Rating (out of 5): 1

Red raspberry (Rubus idaeus) leaves and fruits have a long history of traditional use in herbal medicine, but their application for influenza is based primarily on folklore rather than robust scientific evidence. Traditionally, raspberry leaf tea has been used to soothe sore throats, reduce fever, and provide general relief from cold and flu symptoms. These effects are attributed to the presence of tannins, flavonoids, and vitamin C, which may offer mild astringent and antioxidant properties.

However, there is a lack of well-designed clinical trials or scientific studies that specifically evaluate the effectiveness of red raspberry (leaf or fruit) in treating or preventing influenza. Most references to its use for influenza are anecdotal and found in herbal texts and ethnobotanical records rather than in peer-reviewed medical literature. The rating of 1 reflects the predominance of traditional use and the near absence of scientific validation for this specific indication.

In summary, while red raspberry is commonly included in traditional remedies for symptomatic relief during influenza, there is insufficient scientific evidence to support its use as a treatment or preventative for influenza itself.

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