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.
In its early stages, breast cancer usually has no symptoms. As a tumor develops, you may note the following signs: 1  A lump in the breast or underarm that persists after your menstrual cycle. 2  This is often the first apparent symptom of breast cancer.