Rheumatoid arthritis (RA) is an autoimmune disease that causes inflammation and pain in your joints. It can also affect other organs in your body. The most common symptoms are painful and swollen joints, stiffness, and fatigue.
Viagra (sildenafil) is a medication used to treat erectile dysfunction and pulmonary hypertension. It works by relaxing blood vessels and increasing blood flow to certain areas of the body.
Even though they seem unrelated, some preliminary research has explored the possibility that Viagra may have a therapeutic effect on rheumatoid arthritis. This article reviews what is currently known about the connection between Viagra and rheumatoid arthritis, including potential mechanisms of action.