How to take BiDil
Take BiDil, along with any other heart failure (HF) medicines, just as your doctor tells you to. Tell your doctor about all other medicines, vitamins, and supplements you are taking, even if they don’t have anything to do with your HF.
BiDil is taken 3 times a day. Most patients start with taking 1 tablet, 3 times a day. Your doctor may increase your dose to a maximum of up to 2 tablets taken 3 times a day. Your dose may also be decreased to a minimum of a ½ tablet, 3 times a day if you have side effects you cannot tolerate.1
Your doctor is the only one who can adjust your dose. Please talk with your doctor about any issues or concerns you may have about taking BiDil.
Information for Patients about BiDil® (isosorbide dinitrate/hydralazine HCl)
BiDil is approved for use with other heart medicines to treat heart failure in black patients to improve survival, improve heart failure symptoms, and help patients stay out of the hospital longer. There is little experience in patients with heart failure who experience significant symptoms while at rest. Most patients in the clinical study of BiDil also received other heart failure medicines.
IMPORTANT SAFETY INFORMATION
Tell your doctor about any allergies you have, especially if you're sensitive to nitrates, such as nitroglycerin tablets or isosorbide dinitrate (Isordil®). BiDil has a nitrate component, so you need to let your doctor know.
Tell your doctor if you're taking any erectile dysfunction or pulmonary hypertension drugs like Viagra® or Revatio™ (sildenafil), Levitra® (vardenafil) or Cialis® (tadalafil).
WARNINGS AND PRECAUTIONS
Also tell your doctor if you are taking any medication to decrease blood pressure because when taken with BiDil, blood pressure may become too low.
It is possible you'll get headaches, especially at first, but they often lessen over time. Keep your doctor posted on your headache progress; he or she may want to adjust your dosage.
If you experience dizziness, call your doctor. Please make sure to tell your doctor about any of the signs or symptoms mentioned below or about any unusual events that worry you.
Drinking less fluids than your doctor recommends or losing fluid due to diarrhea, sweating, or vomiting may cause low blood pressure, lightheadedness, or fainting. If fainting occurs, stop taking BiDil and contact your doctor immediately.
Lightheadedness may occur when standing, especially after sitting or lying down.
If you experience any achy and/or swollen joints, unexplained fever for more than a few days, skin rashes, chest pain, prolonged weakness or fatigue (even after a good night's sleep), or any other unexplained signs or symptoms, make sure to tell your doctor as they may be signs of a serious medical condition.
You may also experience rapid heartbeat that could lead to chest pain or aggravate chest pain, or numbness or tingling in the hands or feet.
COMMON SIDE EFFECTS
Headache and dizziness were the most frequent side effects experienced in studies with BiDil.
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit www.fda.gov/medwatch or call 1-800-FDA-1088.
Please click here to see full Prescribing Information for BiDil. This information does not take the place of talking with your healthcare provider about your condition or your treatment. Ask your doctor if BiDil may be right for you.
Reference: 1. BiDil [package insert]. Atlanta, GA: Arbor Pharmaceuticals, Inc; 2015.