Synopsis

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

Sheep's sorrel (Rumex acetosella) has been used in traditional herbal medicine, particularly in North American and European folk practices. It is one of the four main herbs included in the Essiac tea formula, which was promoted in the early 20th century as a remedy for various illnesses, including "blood poisoning" (an old term often referring to sepsis or systemic infections). Historically, sheep's sorrel was believed to have "blood purifying" properties, and herbalists sometimes used it to address skin infections, boils, and other ailments thought to reflect impurities or toxins in the blood. However, these concepts are rooted in pre-modern understandings of disease and do not align with current medical knowledge about blood poisoning or sepsis.

Scientifically, there is very little evidence supporting the use of sheep’s sorrel for treating or preventing blood poisoning. Modern research on sheep’s sorrel has focused on its antioxidant and mild anti-inflammatory properties, but there are no clinical trials or robust studies demonstrating efficacy in treating bloodstream infections or sepsis in humans. Most sources referencing its use for "blood poisoning" cite historical or anecdotal claims rather than empirical data. As such, while the use of sheep's sorrel for blood poisoning is justified by tradition, the evidence supporting its effectiveness is weak (rated 1/5), and it should not be relied upon for serious infections, which require prompt medical treatment.

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