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

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May 27, 2012

Inderal LA

Calcium Channel Blockers (CCBs) »

What are calcium channel blockers (CCBs) and how do they work?

Calcium channel blockers are drugs that block the entry of calcium into the muscle cells of the heart and arteries.

The entry of calcium is critical for the conduction of the electrical signal that passes from muscle cell to muscle cell of the heart, and signals the cells to contract.
It also is necessary in order for the muscle cells to contract and thereby pump blood.
In the arteries, the entry of calcium into muscle cells causes contraction of the cells and thereby dilates (widens) the arteries.
Thus, by blocking the entry of calcium, calcium channel blockers reduce electrical conduction within the heart, decrease the force of contraction (work) of the muscle cells, and dilate arteries.
Dilation of the arteries reduces blood pressure and thereby the effort the heart must exert to pump blood.
Combined with decr...

Read the Calcium Channel Blockers (CCBs) article »

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Inderal LA Patient Information including If I Miss a Dose

What happens if I miss a dose (Inderal LA)?

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 LA)?

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 LA)?

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

What other drugs will affect propranolol (Inderal LA)?

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.

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