Medicinal use This herb is widely used as a medicinal remedy and has many benefits: it combats depression and addiction, it is also has antiviral and anti- inflammatory effects and also has benefits for cancer treatment. St. Jonh’s wort tea This tea is also good for painful menstruation, offering a sedative effect that relieves pain and discomfort from cramps. St. John’s wort has a long list of possible drug interactions, because of its ability to metabolize some of these medications rapidly, they may pass through the system quickly causing ineffectiveness or hyperstimulation. Put the kettle on with water for your tea and bring it to a boil. Place 2 teaspoons per cup of tea inside your teapot and pour the boiling water over the herbs. Let your tea steep for about 5 to 10 minutes. And then strain.