The supplement I chose to write about for the unit 9 assignment was St-John’s Wort. “St.-John’s-Wort (Hypericum perforatum) is a long-living plant with yellow flowers and it contains many chemical compounds, some are believed to be the active ingredients that produce the herb’s effects, including the compounds hypericin and hyperforin” (Stanfield, 2010, p. 198). St.-John’s-wort may work by preventing nerve cells in your brain from reabsorbing the chemical messenger serotonin, or by reducing levels of a protein involved in the body’s immune system and it’s functioning. For many centuries is has been used as a sedative and as a treatment when made into a balm for malaria, burns, wounds, and even insect bites. Today many people use St.-John’s-Wort