- Nervous system: headache, weakness, slowing down the speed of mental and motor reactions, increased fatigue; rarely - decreased attention, anxiety, muscle weakness, insomnia, drowsiness, nightmares, depression, paresthesia in the extremities (in patients with intermittent claudication and Raynaud's syndrome), short-term memory impairment or confusion;
- Sense organs: rarely - dry and sore eyes, decreased secretion of lacrimal fluid, conjunctivitis, decreased vision, tinnitus;
- Cardiovascular system: dizziness, decreased blood pressure, palpitations, orthostatic hypotension, sinus bradycardia, sometimes - loss of consciousness; rarely - manifestation of angiospasm (cold snap of the lower extremities, increased peripheral circulation disturbance, Raynaud's syndrome), temporary worsening of symptoms of chronic heart failure (edema, shortness of breath, swelling of the feet and / or lower legs), impaired conduction and decreased myocardial contractility, cardialgia, arrhythmias;
- Digestive system: abdominal pain, nausea, dry mouth, constipation, vomiting, diarrhea, taste change, impaired liver function;
- Respiratory system: nasal congestion, shortness of breath, difficulty breathing out; when using the drug in high doses - bronchospasm;
- Endocrine system: hypoglycemia (in patients receiving insulin); rarely - hypothyroidism, hyperglycemia (in patients with diabetes mellitus);
- Integuments: exacerbation of psoriasis, rash, psoriasis-like skin reactions, pruritus, flushing of the skin, increased sweating, exanthema, photodermatosis, urticaria, reversible alopecia;
- Laboratory indicators: rarely - increased activity of liver enzymes, agranulocytosis, thrombocytopenia (unusual bleeding and hemorrhage), leukopenia; very rarely - hyperbilirubinemia;
- Other: a slight increase in body weight, pain in the back or joints, decreased libido and / or potency; when taken during pregnancy - intrauterine growth retardation, bradycardia and hypoglycemia in the fetus.
The severity of side effects depends on the individual sensitivity of the patient. Usually they are insignificant and pass independently after drug withdrawal.
What is metoprolol for?
Indications for the prescription of the drug are:
- high levels of thyroxine and triiodothyronine;
- IHD (heart attack and angina pectoris);
- arrhythmia of the type of ventricular extrasystole;
- supraventricular tachycardia;
- repeated migraine attacks;
- arterial hypertension of various origins (primary and secondary);
- functional disorders of the heart, accompanied by heart palpitations;
- chronic cardiovascular failure.
Beta-blocker tablets increase exercise tolerance for cardiac muscle ischemia.
Conditionally acceptable use
In addition to absolute contraindications, the drug has a list of conditional restrictions under which tablets should be taken with extreme caution:
- bronchial asthma;
- heart failure.
If, while taking the drug, symptoms of circulatory disorders appear, it is necessary to abandon the tablets. more info The dosage should be reduced gradually, since a sharp cessation of therapy can provoke withdrawal.
If the patient has surgery, it is not necessary to cancel the tablets, but the patient must inform the doctors about taking Metoprolol.
When taking medication for pressure Metoprolol, it is recommended to refrain from driving and performing work that requires an increased concentration of attention, since the components affect psychomotor reactions, cause vestibular disorders, weakness.
When taken orally, the average dose is 100 mg / day in 1-2 doses. http://www.medicinenet.com/metoprolol/article.htm If necessary, the daily dose is gradually increased to 200 mg. With the on / in the introduction of a single dose - 2-5 mg; in the absence of effect, repeated administration is possible after 5 minutes.
Maximum doses: when taken orally, the daily dose is 400 mg, with the on / in a single dose is 15-20 mg.