St. John’s wort extract Ze 117 (Hypericum perforatum) inhibits norepinephrine and serotonin uptake into rat brain slices and reduces β-adrenoceptor numbers on cultured rat brain cells - Kientsch,U.; Bürgi,S.; Ruedeberg,C.; Probst,S.; Honegger,U.E. (Pharmacopsychiatry, 2001)