Synopsis

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

Tannins, a group of polyphenolic compounds found in various plants, have been used traditionally in herbal medicine for their astringent and antimicrobial properties. Historically, tannin-rich preparations (such as teas from oak bark, witch hazel, or certain berries) have been used as gargles or mouthwashes to soothe sore throats, including those caused by bacterial infections like strep throat. The rationale behind their use is that tannins may help reduce inflammation, tighten mucous membranes, and inhibit the growth of some microbes through protein precipitation. However, while these traditional uses are well documented in ethnobotanical and historical texts, there is little modern scientific evidence specifically validating the use of mixed tannins for treating strep throat (caused by Streptococcus pyogenes). Most clinical recommendations for strep throat focus on antibiotics due to the risk of complications. Some in vitro studies suggest tannins might have antibacterial effects, but these do not translate directly to clinical efficacy in humans for this condition. Thus, the use of mixed tannins for strep throat is supported primarily by tradition, with minimal scientific validation and mostly anecdotal or historical evidence.

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