HOW SHOULD THIS MEDICINE BE USED?
Lopressor® (metoprolol tartrate) Tablets should be taken by mouth, with or right after a meal, as directed by your doctor, usually 1-3 times daily. The specific dosage of Lopressor that your doctor directs you to take will be based on your medical condition and your response to treatment.
Use this medicine regularly to get the most benefit from it. To help you remember, take it at the same time(s) each day. Do not take this medicine in larger or smaller amounts, unless directed by your doctor.
Do not suddenly stop taking this medicine without consulting your doctor because your condition may become worse if you suddenly stop taking Lopressor without consulting your doctor. Some people who have suddenly stopped similar drugs have had chest pain, heart attack and irregular heartbeat. If your doctor decides you should no longer use this drug, he or she may direct you to gradually decrease your dose over a 1 to 2 week period.
For the treatment of high blood pressure, it may take several weeks before your body receives the full benefit of Lopressor. It is important to continue using this drug even if you feel good, as most people with high blood pressure do not feel sick.
Tell your doctor if your condition does not improve or worsens.
WHO SHOULD NOT TAKE LOPRESSOR?
You should not use this drug if you are allergic to metoprolol, other beta-blockers (atenolol, carvedilol, labetalol, nadolol, nebivolol, propranolol, sotalol, and others), or if you have:
- A serious heart problem such as heart block, sick sinus syndrome, or slow heart rate;
- Severe circulation problems;
- Severe heart failure (that required hospitalization); or
- History of slow heart beats that caused you to faint.
Lopressor may contain inactive ingredients (including cellulose compounds, colloidal silicon dioxide, D&C Red No. 3 aluminum lake, FD&C Blue No. 2 aluminum lake, lactose, magnesium stearate, PEG, propylene glycol, povidone, sodium starch glycolate, talc and titanium dioxide) which can cause allergic reactions or other problems.
You should tell your doctor if you have any of the following conditions:
- Asthma, chronic obstructive pulmonary disease (COPD), sleep apnea, or other breathing disorders;
- Diabetes (taking Lopressor may make it harder for you to tell when you have low blood sugar);
- Liver disease;
- Congestive heart failure;
- Circulation problems (such as Raynaud’s syndrome);
- A thyroid disorder; or
Considerations if you have diabetes:
If you have diabetes, Lopressor may prevent the fast/pounding heartbeat you would usually feel when your blood sugar falls too low (hypoglycemia). Other symptoms of low blood sugar levels, such as dizziness and sweating, are unaffected by Lopressor. Lopressor may also make it harder to control your blood sugar levels. You should have your blood sugar checked regularly, as directed by your doctor. Tell your doctor immediately if you have symptoms of high blood sugar such as increased thirst and urination. Your doctor may need to adjust your diabetes medication, exercise program or diet.
If you are having surgery, make sure your surgeon knows that you are taking Lopressor.
Before having surgery, tell your doctor or dentist about all the products you use, including prescription drugs, nonprescription drugs, and herbal products.
Effects of Lopressor:
Lopressor may make you dizzy or drowsy. Do not drive, use machinery, or do any activity that requires alertness until you are confident that you can perform these activities safely while taking Lopressor. Limit alcoholic beverages while on this medication.
Tell your doctor if you are pregnant, intend to become pregnant, or intend to breastfeed.
During pregnancy, Lopressor should only be used when clearly needed. Talk to your doctor as the medicine can cause harm to your unborn child. In addition, this drug passes into breast milk so you should discuss the risks and benefits of using this drug while breast feeding with your doctor.
TAKING OTHER MEDICINES:
Tell your doctor if you are taking any other medicines, including any that you buy without a prescription from a pharmacy, supermarket or healthfood shop.
Some medicines and Lopressor may interfere with each other. These include:
- Certain antidepressants including bupropion, clomipramine, desipramine, duloxetine, fluoxetine, fluvoxamine, paroxetine, and sertraline;
- Ergot medicines such as dihydroergotamine, ergonovine, ergotamine, and methylergonovine;
- Heart or blood pressure medicines such as amlodipine, clonidine, digoxin, diltiazem, dipyridamole, hydralazine, methyldopa, nifedinpine, quinidine, reserpine, verapamil, and others;
- MAO inhibitors such as isocarboxyzid, linezolid, phenelzine, rasagiline, selegiline, and tranylcypromine; or
- Medicine to treat mental illness such as chlorpromazine, fluphenazine, haloperidol, and thioridazine.
This is not a complete list. Other drugs may interact with Lopressor, including prescription and over-the-counter medicines and herbal supplements. Always provide your doctor with a list of all medicines you are taking.
You may need to take different amounts of medicine or to take different medicine while you are taking Lopressor. Your doctor and pharmacist have more information.
Make sure you tell your doctor about any of these medicines or over-the-counter drugs before you start taking Lopressor.