A: Metoprolol belongs to a class of medications called beta blockers, which are used to treat high blood pressure, angina, and congestive heart failure. The most common side effects are dizziness, lightheadedness, or slow heart rate.
Other symptoms of testicular cancer may include: 1  Testicular pain. 2  A sudden gathering of fluid in the scrotum. 3  An abdominal mass or abdominal pain.  Loss of weight or appetite; fatigue; lower- back pain; chest lumps, breathlessness and 1  cough. Infertility.
Symptoms of testicular cancer that has spread. If testicular cancer is not found early, it can spread to other parts of the body. Even when testicular cancer has spread, there may still be no symptoms. But some men might have some of the following: Low back pain from cancer that has spread to the lymph nodes in back of the belly.