What side effects may I notice from receiving BiDil?

Side effects that you should report to your doctor or health care professional as soon as possible:
-allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
-bluish discoloration of lips, fingernails, or palms of hands
-chest pain, or fast or irregular heartbeat
-fever, chills, or sore throat
-low blood pressure
-nausea, vomiting
-numbness or tingling in the hands or feet
-persistent headache
-shortness of breath
-stiff or swollen joints
-sudden weight gain
-swelling of the feet or legs
-swollen lymph glands
-unusual weakness

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):
-diarrhea, or constipation
-flushing of the face or neck
-headache
-loss of appetite

This list may not describe all possible side effects for BiDil. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.