Lopressor acts mostly blocking beta-adrenoreceptors of the heart and is used to treat hypertension, chest pain (angina), abnormal rhythms of the heart, to treat and prevent myocardial infarction. This medication influences the autonomic nervous system which stipulates increased heart rate by blocking its receptors and thus reducing abnormally rapid heart rhythms. It also diminishes myocardial irritability, cardiac output and causes other effects.
Dosage and direction
This medication should be taken with food or just after a meal. Do not chew, squash or break a tablet, drink a glass of water with it. The dosage depends on the treated disease and may vary between 100-450 mg daily. Your individual dosage should be prescribed by your physician. Aged patients are recommended to start from 50 mg daily dose. Kidney failure does not require a dosage correction while liver failure requires the usage of other beta-adrenoblockers which are not destructed in the liver.
Avoid drinking alcohol as its interaction with Lopressor increases drowsiness and dizziness.
Hypersensitivity to the components of the medication, acute or chronic heart failure, arterial hypotension, congestive heart failure, asthma or other breathing problems, diabetes, disorders of peripheral blood circulation, pregnancy, breast-feeding, depression, liver or kidney disease, a thyroid disorder, or myasthenia gravis.
Possible side effect
At the background of common tolerance to the medication among side effects are noticed abdominal cramps, fatigue, insomnia, nausea, depression, memory loss, fever, impotence, lightheadedness, slow heart rate, low blood pressure, cold extremities, sore throat, diarrhoea, constipation, and shortness of breath or wheezing.
Attention should be paid to intake of calcium channel blockers and digoxin (Lanoxin) which are known by dangerous lowering of blood pressure and heart rate being administered together with Lopressor. Lopressor also is able to mask the early symptoms of low blood sugar and should be used with caution in patients suffering from diabetes.
Take the forgotten dose as soon as you remember. If your next dose is less than 4 hours away, skip it and return to your schedule. Do not try to compensate for a missed dose by taking an extra one.
In case such symptoms of Lopressor are noticed: uneven heartbeats, shortness of breath, dizziness, weakness or fainting, bluish-coloured fingernails, seek for immediate medical help.
Store between 15-30 C (59-86 F). Protect this medication away from moisture and sunlight in tight, light-resistant container.