Please inform your doctor if you suffer from any of the following: asthma, bronchitis, emphysema, diabetes, low blood pressure, a heart problem such as heart block, sick sinus syndrome, slow heart rate, congestive heart failure, depression, liver or kidney disease, a thyroid disorder, myasthenia gravis, pheochromocytoma, or problems with circulation (such as Raynaud's syndrome). If you have any of these conditions, you may not be able to use nadolol, or you may need a dosage adjustment or special tests during treatment.

Moreover, tell your doctor if you are using allergy treatments (or if you are undergoing allergy skin-testing), clonidine (Catapres®), guanabenz (Wytensin®), an MAO inhibitor such as isocarboxazid (Marplan®), tranylcypromine (Parnate®), phenelzine (Nardil®), or selegiline (Eldepryl®, Emsam®), a diabetes medication such as insulin, glyburide (Diabeta®, Micronase®, Glynase®), glipizide (Glucotrol®), chlorpropamide (Diabinese®), or metformin (Glucophage®), a heart medication such as nifedipine (Procardia®, Adalat®), reserpine (Serpasil®), verapamil (Calan®, Verelan®, Isoptin®), diltiazem (Cartia®, Cardizem®), medicine for asthma or other breathing disorders, such as albuterol (Ventolin®, Proventil®), bitolterol (Tornalate®), metaproterenol (Alupent®), pirbuterol (Maxair®), terbutaline (Brethaire®, Brethine®, Bricanyl®), and theophylline (Theo-Dur®, Theolair®), cold medicines, stimulant medicines, or diet pills. If you are using any of these drugs, you may not be able to take nadolol, or you may need dosage adjustments or special tests during treatment.

There may be other drugs not listed that can affect nadolol. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.

This medication falls into the FDA pregnancy category C. This means that it may be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment.

Furthermore, nadolol can pass into breast milk and may harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

Nadolol can cause side effects that may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be awake and alert.

Avoid drinking alcohol, which could increase drowsiness and dizziness while you are taking this medicine.

FDA Information

Why is this medication prescribed?

Other uses for this medicine

Dosage and using this medicine

What should I do if I forget a dose?

What side effects can this medication cause?

What storage conditions are needed for this medicine?

In case of an emergency/overdose