Black Tea is well known as a alternative medicine. With antioxidants, immune system improving, and antihypertensive properties it has been used as a medicine for ages. Now it has been discovered that black tea may also combat diabetes. The medicinal ingredient is polysaccharides. This natural medicine that reduces absorption of glucose is something that researchers have been searching for. Black tea is highly beneficial and is also used as a medicine to treat other conditions such as rheumatoid arthritis.