What the proof claims: Some evidence implies that berberine, a material found in goldenseal, does kill some forms of germs. but there's very little proof that goldenseal by itself helps prevent colds or has any health https://biobodyboost.co.uk/products/biofem-womens-blend-for-menopause?_pos=1&_psq=biofem&_ss=e&_v=1.0