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Usage: Inderal is in a group of drugs called beta-blockers. Beta-blockers affect the heart and circulation (blood flow through arteries and veins). Inderal is used to treat tremors, angina (chest pain), hypertension (high blood pressure), heart rhythm disorders, and other heart or circulatory conditions. It is also used to treat or prevent heart attack, and to reduce the severity and frequency of migraine headaches.
Directions: Take Inderal exactly as it was prescribed for you. Do not take the medication in larger amounts or for longer than recommended by your doctor. Take this medication with a full glass of water. Take Inderal at the same time every day. Do not crush, chew, break, or open an extended-release capsule. Swallow the pill whole. It is specially made to release medicine slowly in the body. Breaking or opening the pill would cause too much of the drug to be released at one time. Do not skip doses or stop taking Inderal without first talking to your doctor. Stopping suddenly may make your condition worse. To be sure this medication is helping your condition, your blood pressure will need to be checked on a regular basis. It is important that you not miss any scheduled visits to your doctor. If you need to have any type of surgery, tell the surgeon that you are using Inderal. You may need to briefly stop using Inderal before having surgery. Inderal is only part of a complete program of treatment for hypertension that may also include diet, exercise, and weight control. Follow your diet, medication, and exercise routines very closely if you are being treated for hypertension. Hypertension often has no symptoms, so you may not even feel that you have high blood pressure. Continue using this medicine as directed, even if you feel well. You may need to use blood pressure medication for the rest of your life.
Side Effects: Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Call your doctor at once if you have any of these serious side effects: slow or uneven heartbeats; feeling light-headed, fainting; feeling short of breath, even with mild exertion; swelling of your ankles or feet; nausea, stomach pain, low fever, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes); depression; or cold feeling in your hands and feet. Other less serious side effects are more likely to occur, such as: decreased sex drive, impotence, or difficulty having an orgasm; sleep problems (insomnia); tired feeling; or anxiety, nervousness.
Precautions: Inderal 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 Inderal.
Drug Interactions: Before taking Inderal, 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); or cold medicines, stimulant medicines, or diet pills. If you are using any of these drugs, you may not be able to take Inderal, or you may need dosage adjustments or special tests during treatment. There may be other drugs not listed that can affect Inderal. 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.
If You Take Too Much: Seek emergency medical attention if you think you have used too much of this medicine. Symptoms of an Inderal overdose may include uneven heartbeats, shortness of breath, bluish-colored fingernails, dizziness, weakness, fainting, or seizure (convulsions).
Missed Dose: For regular (short-acting) Inderal: 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 Inderal (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.
Storage: Store Inderal at room temperature away from moisture and heat.
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