As with any medication, there may be potential side effects associated with Avaforce 50 mg, including headache, flushing, nasal congestion, back pain, and dizziness. In rare cases, more serious side effects such as priapism (a prolonged and painful erection) or sudden vision loss may occur. If you experience any concerning symptoms while taking Avaforce 50 mg, it's important to seek medical attention promptly.