Drug Class: What is Lopressor and why is it prescribed?
Lopressor Mechanism: How does Lopressor work?
Lopressor Dosage: How should you take this medication?
Possible food and drug interactions when taking Lopressor
Special information on Lopressor
Lopressor side effects
|Drug Class: What is Lopressor and why is it prescribed?|
Lopressor, a type of medication known as a Beta-Blocker, is used in the treatment of high blood pressure, angina pectoris (chest pain, usually caused by lack of oxygen to the heart due to clogged arteries), and heart attack.
When prescribed for high blood pressure, it is effective when used alone or in combination with other high blood pressure medications. Beta-blockers decrease the force and rate of heart contractions, thereby reducing the demand for oxygen and lowering blood pressure. Occasionally doctors prescribe Lopressor for the treatment of aggressive behavior, prevention of migraine headache, and relief of temporary anxiety. Lopressor/Metoprolol also is used to treat abnormal heart rhythms. An extended-release form of this drug, called Toprol-XL, is prescribed for high blood pressure, angina, and heart failure.
|Lopressor Mechanism: How does Lopressor work?|
Lopressor/Metoprolol is a beta-adrenergic blocking agent. Lopressor (Metoprolol) blocks the action of the sympathetic nervous system, a portion of the involuntary nervous system. The sympathetic nervous system stimulates the pace of the heart beat. By blocking the action of these nerves, metoprolol reduces the heart rate and is useful in treating abnormally rapid heart rhythms. Lopressor (Metoprolol) also reduces the force of heart muscle contraction and lowers blood pressure.
By reducing the heart rate and the force of muscle contraction, Lopressor, metoprolol reduces heart muscle oxygen demand. Since angina occurs when oxygen demand of the heart exceeds supply, metoprolol is helpful in treating angina. Lopressor therefore relaxes blood vessels and helps the heart beat more regularly. It also helps relax the tone of the heart to allow it to function more efficiently.
|Lopressor Dosage: How should you take this medication?|
|Lopressor should be taken with food or immediately after you have eaten. Take Lopressor exactly as prescribed, even if your symptoms have disappeared. Try not to miss any doses. If this medication is not taken regularly, your condition may worsen. ADULTS: Dosages of Lopressor should be individualized by your doctor. It should be taken with or immediately following meals. High Blood Pressure: The usual starting dosage of Lopressor is a total of 100 milligrams a day taken in 1 or 2 doses, whether taken alone or with a diuretic. The initial dosage of Toprol-XL ranges from 50 to 100 milligrams once a day. Your doctor may gradually increase the dosage up to 400 milligrams a day. Generally, the effectiveness of each dosage increase will be seen within a week. Angina Pectoris: The usual starting dosage is a total of 100 milligrams a day taken in 2 doses of Lopressor or a single dose of Toprol-XL. Your doctor may gradually increase the dosage up to 400 milligrams a day. Generally, the effectiveness of each dosage increase will be seen within a week. If treatment is to be discontinued, your doctor will withdraw the drug gradually over a period of 1 to 2 weeks. Heart Attack: Lopressor can be used for treatment of heart attack both in the hospital during the early phases and after the individual\'s condition has stabilized. Your doctor will determine the dosage according to your needs. Heart Failure: The recommended starting dose of Toprol-XL is 25 milligrams once daily for 2 weeks (12.5 milligrams in severe cases). Your doctor will double the dose every 2 weeks up to the highest level that works without side effects. The maximum recommended dose is 200 milligrams daily. CHILDREN: The safety and effectiveness of Lopressor have not been established in children. Overdosage: Any medication taken in excess can cause symptoms of overdose. If you suspect an overdose, seek medical attention immediately. The symptoms of Lopressor overdose may include: Asthma-like symptoms, coma, heart failure, irregular heartbeat, low blood pressure, nausea and vomiting, shock, slow heartbeat, stopped heart. If you miss a dose: If it is within 4 hours of your next dose, skip the one you missed and go back to your regular schedule. Never take 2 doses at the same time. Storage instructions: Store Lopressor at room temperature in a tightly closed container, away from light. Protect from moisture. Store Toprol-XL at room temperature. Preparations: Tablets: 25mg, 50 mg, 100 mg, 200 mg.|
|Possible food and drug interactions when taking Lopressor|
If Lopressor is taken with certain other drugs, the effects of either could be increased, decreased, or altered. It is especially important to check with your doctor before combining Lopressor with certain high blood pressure drugs such as reserpine (Ser-Ap-Es).
Other medications that might interact with Lopressor include: Albuterol (Proventil, Ventolin), Amiodarone (Cordarone), Barbiturates such as phenobarbital, Calcium channel blockers such as Calan and Cardizem, Cimetidine (Tagamet), Ciprofloxacin (Cipro), Clonidine (Catapres), Epinephrine (EpiPen), Fluoxetine (Prozac), Hydralazine (Apresoline), Insulin, Nonsteroidal anti-inflammatory drugs such as Motrin and Indocin, Oral diabetes drugs such as Glucotrol and Micronase, Paroxetine (Paxil), Prazosin (Minipress), Propafenone (Rythmol), Quinidine (Quinaglute), Ranitidine (Zantac), Rifampin (Rifadin).
|Special information on Lopressor|
Special information on Lopressor, if you are pregnant or breastfeeding: The effects of Lopressor during pregnancy have not been adequately studied. If you are pregnant or plan to become pregnant, inform your doctor immediately. Lopressor appears in breast milk and could affect a nursing infant. If this medication is essential to your health, your doctor may advise you to discontinue breastfeeding until your treatment with this medication is finished.
Most important fact about Lopressor: If you have high blood pressure, you must take Lopressor regularly for it to be effective. Since blood pressure declines gradually, it may be several weeks before you get the full benefit of Lopressor; and you must continue taking it even if you are feeling well. Lopressor does not cure high blood pressure; it merely keeps it under control.
|Lopressor side effects|
Side effects of Lopressor cannot be anticipated. If any develop or change in intensity, inform your doctor as soon as possible. Only your doctor can determine if it is safe for you to continue taking Lopressor.
More common side effects of Lopressor: May include depression, diarrhea, dizziness, itching, rash, shortness of breath, slow heartbeat, tiredness.
Less common or rare side effects of Lopressor: May include, blurred vision, cold hands and feet, confusion, congestive heart failure, constipation, difficult or labored breathing, dry eyes, dry mouth, gas, hair loss, headache, heart attack, heartburn, low blood pressure, muscle pain, nausea, nightmares, rapid heartbeat, ringing in the ears, short-term memory loss, stomach pain, swelling due to fluid retention, trouble sleeping, wheezing, worsening of heart irregularities.
WHY SHOULD THIS DRUG NOT BE PRESCRIBED?
SPECIAL WARNINGS ABOUT LOPRESSOR:
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