Drug information provided by: IBM Micromedex
It is important that your doctor check you closely while you are receiving this medicine. This will allow your doctor to see if the medicine is working properly. Blood tests may be needed to check for unwanted effects.
Hydralazine may cause some people to have headaches or to feel dizzy. Make sure you know how you react to this medicine before you drive, use machines, or do anything else that could be dangerous if you are dizzy or not alert.
Do not take other medicines unless they have been discussed with your doctor. This especially includes over-the-counter (nonprescription) medicines for appetite control, asthma, colds, cough, hay fever, or sinus problems, since they may tend to increase your blood pressure.