Some side effects can include: flushing (warmth, redness, or tingling in your face, neck, or chest), stuffy or runny nose, headache, dizziness, upset stomach, indigestion, back pain.
More serious side effects can include: an erection that won't go away (priapism), color vision changes, such as seeing a blue tinge to objects or having difficulty telling the difference between the colors blue and green, sudden vision loss, ringing in your ears or sudden hearing loss, chest pain or heavy feeling, pain spreading to the arm or shoulder, nausea, sweating, general ill feeling, irregular heartbeat, swelling in your hands, ankles, or feet, shortness of breath, lightheadedness or fainting, or seizures (convulsions).
Speak with your doctor or pharmacist for help managing any side effects that become too severe during your treatment with Staxyn. If you experience any serious side effects contact your doctor for additional medical treatment.