Pour 1 tablespoon of tea with 1 cup of boiling water and brew for 20-30 minutes or pour 1 cup of water and boil for 10-20 minutes. St. John's wort should not be used in unlimited quantities. Today, the popular herb is often used to ease the symptoms of depression. St. John's wort is widely believed to boost mood and provide some relief from depression, As ingredients in the herb (hypericin and hyperforin) may increase levels of certain brain chemicals, like serotonin. The herb is also being explored for the following health concerns: anxiety, menopause-related symptoms, premenstrual syndrome (PMS), seasonal affective disorder (SAD), smoking cessation, viral infections. St. John's wort can also interact with other herbs and supplements. You should avoid taking any nutritional supplement or remedy that can raise serotonin, such as 5-hydroxytryptophan (5-HTP), L-tryptophan, or SAMe if you are taking St. John's wort. Do not use the ingredients of herbal tea in case of individual intolerance.