Tulsi black Tea Promotes heart health by lowering cholesterol and high blood pressure. Tulsi, black tea, and chai spices make the perfect exotic chai that stimulates your senses and soothes your soul. Tulsi (also known as Holy Basil) makes a delicious and refreshing tea that possesses wonderful health benefits that support the body’s natural immune system while relieving the body’s negative reaction to stress. Tulsi black Teas are considered very safe by modern scientific standards. In fact, Tulsi helps reduce the ill effects of many allopathic medicines and has proved to be beneficial for people of all ages.