The following wellness conditions must be mentioned to your physician as they might affect the performance of your therapy: upper body pain, bleeding condition, red blood cell problems, conditions affecting the form of the penis, cardiovascular disease, eye disease such as retinitis pigmentosa, reduced or higher blood tension, belly ulcer, renal system, liver, or heart condition, movement, irregular pulsation, pulmonary veno-occlusive illness, high cholesterol or blood flow troubles.