Before you begin taking a medication, be sure to inform your doctor of any medical conditions or allergies you may have, any medications you are taking, whether you are pregnant or breast-feeding, and any other significant facts about your health. These factors may affect how you should take this medication.
Blood tests: You will need to have regular blood tests so that your doctor can monitor your blood cell levels while you are taking this medication.
Kidney disease: If you have decreased kidney function, discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed.
Low blood pressure: Hydralazine may cause a sudden drop in blood pressure causing dizziness and fainting, especially when getting up from a sitting or lying position. Get up slowly from a sitting or lying position to avoid dizziness, fainting, or falling.
Lupus: Hydralazine may cause lupus-like symptoms (e.g., joint pain, fever, generalized rash). If these symptoms develop, contact your doctor immediately.
Pregnancy: This medication should only be used when the benefit clearly justifies the potential risks.
Breast-feeding: Hydralazine can pass into the breast milk. Speak with your doctor about if you should breast feed while on this medication.
Children: The safety and effectiveness of using this medication have not been established for children.
Seniors: The elderly may be more sensitive to the blood lowering effects of hydralazine. It should be used with more caution.