Synopsis

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

Currant, particularly black currant (Ribes nigrum), has a history of traditional use in European and Asian folk medicine for treating colds, influenza, and other respiratory illnesses. The use is largely based on the fruit's rich content of vitamin C, anthocyanins, and other antioxidants, which have been believed to support immune function and help the body resist infections. However, few high-quality clinical trials have specifically evaluated the efficacy of currants against influenza in humans.

Some laboratory studies have shown that black currant extracts may inhibit the replication of influenza viruses in vitro, potentially due to the antiviral properties of their polyphenolic compounds. For example, a study published in "Phytotherapy Research" (2003) reported that black currant juice suppressed the growth of influenza virus in cell culture. Despite these promising findings, clinical evidence in humans is lacking. Most modern use for influenza relies on the fruit’s general immune-supportive properties rather than robust, targeted antiviral effects demonstrated in controlled trials.

In summary, currant’s role in treating influenza is primarily rooted in traditional practices, with limited scientific evidence suggesting possible benefit. The overall evidence supporting its effectiveness remains low, and currant should not be considered a substitute for evidence-based influenza treatments.

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