Evidence supporting the use of: Berberine
For the health condition: Infection (viral)

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Synopsis

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

Berberine is a plant alkaloid found in herbs such as Berberis vulgaris (barberry) and Hydrastis canadensis (goldenseal). Its traditional use spans centuries, particularly in Chinese and Ayurvedic medicine, where it has been used to treat infections and gastrointestinal ailments. Scientifically, berberine demonstrates broad-spectrum antimicrobial properties, including activity against bacteria, fungi, and some viruses in laboratory studies. In vitro (test tube) research indicates that berberine can inhibit the replication of several viruses, such as influenza, herpes simplex virus, and hepatitis C virus, by interfering with viral entry, replication, and assembly. Some preclinical animal studies show berberine may reduce viral loads and inflammation in models of viral infection.

However, robust clinical trials in humans for viral infections are lacking. Most human studies focus on berberine’s effects on metabolic disorders or bacterial diarrhea, not viral illnesses. Thus, while the scientific rationale for berberine’s antiviral activity is supported by preliminary laboratory research, there is insufficient clinical evidence to recommend its use for viral infections in humans. The current evidence base rates as a 2 out of 5, reflecting promising but unproven potential. Further clinical studies are needed to establish efficacy, dosing, and safety for this indication.

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