Inderal (Propranolol) Patient Information: Missed a Dose and What Should I Avoid at RxList

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May 27, 2012

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Raynaud's Phenomenon »

What is Raynaud's phenomenon?

Raynaud's phenomenon (RP) is a condition resulting in a particular series of discolorations of the fingers and/or the toes after exposure to changes in temperature (cold or hot) or emotional events. Skin discoloration occurs because an abnormal spasm of the blood vessels causes a diminished blood supply to the local tissues. Initially, the digit(s) involved turn white because of the diminished blood supply. The digit(s) then turn blue because of prolonged lack of oxygen. Finally, the blood vessels reopen, causing a local "flushing" phenomenon, which turns the digit(s) red. This three-phase color sequence (white to blue to red), most often upon exposure to cold temperature, is characteristic of RP.

Raynaud's phenomenon most frequently affects women, especially in the second, third, or fourth decades of life. People can have Raynauds phenomenon alone or as a part of other rheumatic diseases. When it occurs alone...

Read the Raynaud's Phenomenon article »

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Inderal Patient Information including If I Miss a Dose

What happens if I miss a dose (Inderal)?

For regular (short-acting) propranolol: Take the missed dose as soon as you remember. If your next dose is less than 4 hours away, skip the missed dose and take the medicine at the next regularly scheduled time.

For extended-release propranolol (Inderal LA, InnoPran XL and others): Take the missed dose as soon as you remember. If your next dose is less than 8 hours away, skip the missed dose and take the medicine at the next regularly scheduled time.

Do not take extra medicine to make up the missed dose.

What happens if I overdose (Inderal)?

Seek emergency medical attention if you think you have used too much of this medicine.

Overdose symptoms may include slow or uneven heartbeats, dizziness, weakness, or fainting.

What should I avoid while taking propranolol (Inderal)?

Avoid drinking alcohol. It may increase your blood levels of propranolol.

What other drugs will affect propranolol (Inderal)?

Tell your doctor about all other medications you use, especially:

clonidine (Catapres);
digitalis (digoxin, Lanoxin);
dobutamine (Dobutrex);
haloperidol (Haldol);
isoproterenol (Isuprel);
a blood thinner such as warfarin (Coumadin);
an antidepressant such as amitriptyline (Elavil, Etrafon), clomipramine (Anafranil), desipramine (Norpramin), imipramine (Janimine, Tofranil), and others;
an MAO inhibitor such as isocarboxazid (Marplan), phenelzine (Nardil), rasagiline (Azilect), selegiline (Eldepryl, Emsam), or tranylcypromine (Parnate);
aspirin or other NSAIDs (non-steroidal anti-inflammatory drugs) such as ibuprofen (Motrin, Advil), naproxen (Aleve, Naprosyn), diclofenac (Cataflam, Voltaren), etodolac (Lodine), indomethacin (Indocin), ketoprofen (Orudis), and others;
doxazosin (Cardura), prazosin (Minipress), terazosin (Hytrin);
a heart medication such as nifedipine (Procardia, Adalat), reserpine (Serpasil), diltiazem (Cartia, Cardizem), or verapamil (Calan, Verelan, Isoptin);
amiodarone (Cordarone, Pacerone), propafenone (Rythmol), quinidine (Quinaglute, Quinidex, Quin-Release); or
an ACE inhibitor such as benazepril (Lotensin), captopril (Capoten), fosinopril (Monopril), enalapril (Vasotec), lisinopril (Prinivil, Zestril), moexipril (Univasc), perindopril (Aceon), quinapril (Accupril), ramipril (Altace), or trandolapril (Mavik).

This list is not complete and there may be other drugs that can interact with propranolol. 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.

Where can I get more information?

Your pharmacist can provide more information about propranolol.

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

Every effort has been made to ensure that the information provided by Cerner Multum, Inc. ('Multum') is accurate, up-to-date, and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. Multum information has been compiled for use by healthcare practitioners and consumers in the United States and therefore Multum does not warrant that uses outside of the United States are appropriate, unless specifically indicated otherwise. Multum's drug information does not endorse drugs, diagnose patients or recommend therapy. Multum's drug information is an informational resource designed to assist licensed healthcare practitioners in caring for their patients and/or to serve consumers viewing this service as a supplement to, and not a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners. The absence of a warning for a given drug or drug combination in no way should be construed to indicate that the drug or drug combination is safe, effective or appropriate for any given patient. Multum does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse or pharmacist.

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