"What are beta blockers and how do they work?
Beta blockers, also known as beta-adrenergic blocking agents, are a class of drugs that works by blocking the neurotransmitters norepinephrine and epinephrine from binding to receptors. "...
Lopressor HCT Consumer (continued)
Dizziness, lightheadedness, drowsiness, headache, slow heartbeat, tiredness, or diarrhea may occur. Decreased sexual ability has been reported infrequently. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
To lower your risk of dizziness and lightheadedness, get up slowly when rising from a sitting or lying position.
This product 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 this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
The hydrochlorothiazide in this product may cause your body to lose too much water and salt (dehydration). Tell your doctor immediately if you have any of these unlikely but serious symptoms of dehydration: very dry mouth, extreme thirst, muscle cramps/weakness, fast heartbeat, severe dizziness, confusion, fainting, seizures.
Tell your doctor immediately if any of these unlikely but serious side effects occur: very slow/irregular heartbeat, mental/mood changes (such as depression, mood swings), toe/joint pain.
Tell your doctor immediately if any of these rare but very serious side effects occur: trouble breathing, blue fingers/toes, yellowing eyes/skin, persistent nausea/vomiting, severe stomach/abdominal pain, dark urine, decrease in vision, eye pain, easy bruising/bleeding, signs of infection (such as fever, persistent sore throat), change in the amount of urine (not including the normal increase in urine when you first start this drug).
Although this medication may be used to treat heart failure, some people may rarely develop new or worsening symptoms of heart failure. Tell your doctor immediately if you experience any of these unlikely but serious side effects: swelling ankles/feet, severe tiredness, shortness of breath, unexplained/sudden weight gain.
A very serious allergic reaction to this drug is rare. However, seek immediate medical attention 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.
In the US -
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.
Read the Lopressor HCT (metoprolol tartrate and hydochlorothiazide) Side Effects Center for a complete guide to possible side effects
PRECAUTIONS: Before taking this product, tell your doctor or pharmacist if you are allergic to metoprolol or hydrochlorothiazide; or to other thiazide diuretics (such as chlorothiazide); 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.
This medication should not be used if you have certain medical conditions. Before using this medicine, consult your doctor or pharmacist if you have: certain types of heart rhythm problems (such as a slow heartbeat, second- or third-degree atrioventricular block, sick sinus syndrome), an inability to make urine (anuria).
Before using this medication, tell your doctor or pharmacist your medical history, especially of: blood circulation problems (such as Raynaud's disease, peripheral vascular disease), pheochromocytoma, breathing problems (such as asthma, chronic bronchitis, emphysema), overactive thyroid (hyperthyroidism), liver disease, kidney disease, lupus, serious allergic reactions including those needing treatment with epinephrine, mental/mood disorders (such as depression), gout, loss of too much body water (dehydration), untreated salt imbalance (for example, high calcium, low potassium, low magnesium), a certain muscle/nerve disease (myasthenia gravis).
Before having surgery, tell your doctor or dentist that you are taking this medication.
This drug 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.
To help prevent dizziness, drink plenty of fluids while taking this medication unless your doctor directs you otherwise. Too much sweating, diarrhea, or vomiting may cause you to feel lightheaded. Report prolonged diarrhea or vomiting to your doctor.
This medication may reduce the potassium levels in your blood. Ask your doctor about adding potassium to your diet. Your doctor may prescribe a potassium supplement.
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 this drug. 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 diabetes medication or diet may need to be adjusted.
This medication may make you more sensitive to the sun. Avoid prolonged sun exposure, tanning booths, and sunlamps. Use a sunscreen and wear protective clothing when outdoors.
Older adults may be more sensitive to the side effects of this drug, including dizziness.
During pregnancy, this medication should be used only when clearly needed. It may harm an unborn baby. Discuss the risks and benefits with your doctor.
Metoprolol and hydrochlorothiazide pass into breast milk, but are unlikely to harm a nursing infant. Consult your doctor before breast-feeding.
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Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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