Phenoxybenzamine Side Effects
What side effects can this medication cause?
Phenoxybenzamine may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:
- nasal congestion
- dizziness
- upset stomach
- sexual dysfunction (difficulty ejaculating)
- dizziness
If you experience any of the following symptoms, call your doctor immediately:
- fainting
- fast heartbeat
- vomiting
If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program by phone 1-800-332-1088.