Before taking metoprolol, tell your doctor or pharmacist if you are allergic to it; or to other beta-blockers (such as atenolol, propranolol); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using Metoprolol Succinate ER 100mg, tell your doctor or pharmacist your medical history, especially of: certain types of heart rhythm problems (such as a slow heartbeat, second- or third-degree atrioventricular block, sick sinus syndrome), breathing problems (such as asthma, chronic bronchitis, emphysema), liver disease, serious allergic reactions, including those needing treatment with epinephrine, blood circulation problems (such as Raynaud's disease, peripheral vascular disease), mental/mood disorders (such as depression), a certain muscle disease (myasthenia gravis).
If you have diabetes, this product may prevent the fast/pounding heartbeat you would usually feel when your blood sugar level falls too low (hypoglycemia). Other symptoms of a low blood sugar level, such as dizziness and sweating, are unaffected by Metoprolol Succinate ER 100mg. This product may also make it harder to control your blood sugar levels. Check your blood sugar levels regularly as directed by your doctor. Tell your doctor immediately if you have symptoms of high blood sugar such as increased thirst/urination. Your doctor may need to adjust your diabetes medication, exercise program, or diet.
Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
Metoprolol Succinate ER 100mg may make you dizzy or drowsy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Limit alcoholic beverages.
During pregnancy, Metoprolol Succinate ER 100mg should be used only when clearly needed. It may harm an unborn baby. Discuss the risks and benefits with your doctor.
Metoprolol Succinate ER 100mg passes into breast milk. Discuss the risks and benefits with your doctor before breast-feeding.
Store at room temperature away from light and moisture. Do not store in the bathroom. Keep all medicines away from children and pets.
Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company for more details about how to safely discard your product.
Metoprolol Succinate ER 100mg is a beta-blocker used to treat chest pain (angina), heart failure, and high blood pressure. Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems.
Metoprolol Succinate ER 100mg works by blocking the action of certain natural chemicals in your body (such as epinephrine) that affect the heart and blood vessels. This lowers heart rate, blood pressure, and strain on the heart.
See also Warning section.
Take Metoprolol Succinate ER 100mg by mouth, with or right after a meal, as directed by your doctor, usually once daily. The dosage is based on your medical condition and response to treatment.
Do not crush or chew extended-release tablets. Doing so can release all of the drug at once, increasing the risk of side effects. Also, do not split the tablets unless they have a score line and your doctor or pharmacist tells you to do so. Swallow the whole or split tablet without crushing or chewing.
To reduce your risk of side effects, your doctor may direct you to start Metoprolol Succinate ER 100mg at a low dose and gradually increase your dose. Follow your doctor's instructions carefully.
Use Metoprolol Succinate ER 100mg regularly to get the most benefit from it. To help you remember, take it at the same time each day. Do not suddenly stop taking Metoprolol Succinate ER 100mg without consulting your doctor. Your condition may become worse when the drug is suddenly stopped.
For the treatment of high blood pressure, it may take several weeks before you get the full benefit of Metoprolol Succinate ER 100mg. It is important to continue taking Metoprolol Succinate ER 100mg even if you feel well. Most people with high blood pressure do not feel sick.
To prevent chest pain, a second heart attack, or migraine headaches, it is very important to take Metoprolol Succinate ER 100mg regularly as prescribed. Metoprolol Succinate ER 100mg should not be used to treat chest pain or migraines when they occur. Use other medications to relieve sudden attacks as directed by your doctor (for example, nitroglycerin tablets placed under the tongue for chest pain, "triptan" drugs such as sumatriptan for migraines). Consult your doctor or pharmacist for details.
Tell your doctor if your condition does not improve or if it worsens (for example, if your routine blood pressure readings remain high or increase, if your chest pain or migraines occur more often).
Drowsiness, dizziness, tiredness, diarrhea, and slow heartbeat may occur. Decreased sexual ability has been reported infrequently. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
To reduce the risk of dizziness and lightheadedness, get up slowly when rising from a sitting or lying position.
With some brands of Metoprolol Succinate ER 100mg, an empty tablet shell may appear in your stool. This is harmless.
Metoprolol Succinate ER 100mg may reduce blood flow to your hands and feet, causing them to feel cold. Smoking may worsen this effect. Dress warmly and avoid tobacco use.
Remember that your doctor has prescribed Metoprolol Succinate ER 100mg because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using Metoprolol Succinate ER 100mg do not have serious side effects.
Tell your doctor immediately if any of these unlikely but serious side effects occur: very slow heartbeat, severe dizziness, fainting, blue fingers/toes, trouble breathing, new or worsening symptoms of heart failure (such as swelling ankles/feet, severe tiredness, shortness of breath, unexplained/sudden weight gain), mental/mood changes (such as confusion, mood swings, depression).
A very serious allergic reaction to Metoprolol Succinate ER 100mg is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Click here to view a more detailed list of Metoprolol Succinate ER side effects.
If you miss a dose of Metoprolol Succinate ER 100mg, take it as soon as you remember. If it is near the time of the next dose, skip the missed dose and resume your usual dosing schedule. Do not double the dose to catch up.
Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.
A product that may interact with Metoprolol Succinate ER 100mg is: fingolimod.
Other medications can affect the removal of metoprolol from your body, which may affect how metoprolol works. Examples include lumefantrine, propafenone, quinidine, SSRI antidepressants (such as fluoxetine, paroxetine), St. John's wort, among others.
Check the labels on all your medicines (such as cough-and-cold products, diet aids, or NSAIDs such as ibuprofen, naproxen) because they may contain ingredients that could increase your blood pressure/heart rate or worsen your heart failure. Ask your pharmacist for more details.