Metoprolol tartrate 20mg
Dosage should be adjusted based on patient response. The minimum available dose is one half of the 25 mg tablet. Dosage should be adjusted according to blood pressure response. What other drugs will affect metoprolol? Tell your doctor about all medicines you use, and those you start or stop using during your treatment with metoprolol, especially: This list is not complete.
Monitoring of blood pressure and heart rate are recommended during initial use. The concomitant use of clonidine with a non-selective beta blocker, and possibly also with a selective beta blocker, increases the risk of rebound hypertension. If clonidine is administered concomitantly, the administration of the clonidine medication needs to be continued for some time after therapy is discontinued.
Anti-arrhythmic drugs Caution is advisable in the case of the concomitant use of some anti-arrhythmic drugs, such as those of the quinidine or amiodarone types, and propafenone since beta blockers can intensify the negative inotropic and negative dromotropic effects thereof.
Paroxetine may increase plasma levels of metoprolol resulting in increased beta-blocking effects Ergotamine As beta-blockers may affect the peripheral circulation, care should be exercised when drugs with similar activity, e. The administration of adrenaline epinephrine to patients undergoing beta-blockade can result in an increase in blood pressure and bradycardia although this is less likely to occur with beta1-selective drugs.
Inhalational anaesthetics An increase in the cardio-depressive effect due to the concomitant administration of inhalational anaesthetics is possible; however, since beta blockade can prevent excessive fluctuations in blood pressure whilst the patient is intubated and is rapidly antagonised with beta sympathomimetics, concomitant use is not contraindicated see section 4. Prostaglandin synthetase inhibitors The concomitant use of beta blockers with indometacin or other prostaglandin synthetase inhibitors can reduce the hypotensive effect of the medicinal product.
Insulin and oral antidiabetic agents The blood sugar-reducing effect of insulin and oral blood sugar-reducing drugs can be intensified by beta blockers, in particular non-selective beta blockers. In this case, the dosage of the oral blood sugar-reducing drug must be adjusted. Alpha blockers such as prazosine, tamsulosin, terazosine, doxazosine Increased risk of hypotension, especially severe orthostatic hypotension.
Non-steroidal anti-inflammatory drugs Concurrent treatment with non-steroidal anti-inflammatory drugs such as indomethacin may decrease the antihypertensive effect of metoprolol. Whereas baclofen increased risk of orthostatic hypotension in particular.
Monitoring of blood pressure and dosage adjustment of the antihypertensive if necessary. Lidocaine Metoprolol can reduce the clearance of lidocaine. Mefloquine Increased risk of bradycardia Antacid showed an increase in the plasma concentrations of metoprolol when the drug was coadministered with an antacid.
The effects of metoprolol and other antihypertensive drugs on blood pressure are usually additive. Care should be taken when combining with other antihypertensive drugs or drugs that might reduce blood pressure, such as tricyclic antidepressants, barbiturates and phenothiazines. However, combinations of antihypertensive drugs may often be used with benefits to improve control of hypertension.
Beta blockers reduce placental perfusion, which may result in intrauterine fetal death, immature and premature deliveries but to date prospective studies have not reported an increased risk of congenital defects in humans. Do not suddenly stop taking this medication 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 this drug. It is important to continue taking this medication even if you feel well.
Most people with high blood pressure do not feel sick. Precautions Start at a low dose and uptitrate slowly in patients with impaired hepatic function. Information for Patients Patients should be advised to take metoprolol regularly and continuously, as directed, with or immediately following meals.
If a dose should be missed, the patient should take only the next scheduled dose without doubling it. Patients should not discontinue metoprolol without consulting the physician. Drug Interactions Catecholamine-depleting drugs: Observe patients treated with Metoprolol Tartrate plus a catecholamine depletor for evidence of hypotension or marked bradycardia, which may produce vertigo, syncope, or postural hypotension. In addition, possibly significant hypertension may theoretically occur up to 14 days following discontinuation of the concomitant administration with an irreversible MAO inhibitor.
Digitalis glycosides and beta blockers: Both digitalis glycosides and beta blockers slow atrioventricular conduction and decrease heart rate.
Concomitant use can increase the risk of bradycardia. Monitor heart rate and PR interval. Concomitant administration of a beta-adrenergic antagonist with a calcium channel blocker may produce an additive reduction in myocardial contractility because of negative chronotropic and inotropic effects. Risk of Anaphylactic Reaction: While taking beta-blockers, patients with a history of severe anaphylactic reaction to a variety of allergens may be more reactive to repeated challenge, either accidental, diagnostic, or therapeutic.
Such patients may be unresponsive to the usual doses of epinephrine used to treat allergic reaction. Increase in plasma concentrations of metoprolol would decrease the cardioselectivity of metoprolol.
Known clinically significant potent inhibitors of CYP2D6 are antidepressants such as fluvoxamine, fluoxetine, paroxetine, sertraline,bupropion, clomipramine, and desipramine; antipsychotics such as chlorpromazine, fluphenazine, haloperidol, and thioridazine; antiarrhythmics such as quinidine or propafenone; antiretrovirals such as ritonavir; antihistamines such as diphenhydramine; antimalarials such as hydroxychloroquine or quinidine; antifungals such as terbinafine.
Concomitant administration of hydralazine may inhibit presystemic metabolism of metoprolol leading to increased concentrations of metoprolol. Antihypertensive effect of alpha-adrenergic blockers such as guanethidine, betanidine, reserpine, alpha-methyldopa or clonidine may be potentiated by beta-blockers including Metoprolol Tartrate.
Beta- adrenergic blockers may also potentiate the postural hypotensive effect of the first dose of prazosin, probably by preventing reflex tachycardia. On the contrary, beta adrenergic blockers may also potentiate the hypertensive response to withdrawal of clonidine in patients receiving concomitant clonidine and beta-adrenergic blocker.
If a patient is treated with clonidine and Metoprolol Tartrate concurrently, and clonidine treatment is to be discontinued, stop Metoprolol Tartrate several days before clonidine is withdrawn.
Rebound hypertension that can follow withdrawal of clonidine may be increased in patients receiving concurrent beta-blocker treatment.
Concomitant administration with beta-blockers may enhance the vasoconstrictive action of ergot alkaloids Dipyridamole: In general, administration of a beta-blocker should be withheld before dipyridamole testing, with careful monitoring of heart rate following the dipyridamole injection. Carcinogenesis, Mutagenesis, Impairment of Fertility Long-term studies in animals have been conducted to evaluate carcinogenic potential.
The only histologic changes that appeared to be drug related were an increased incidence of generally mild focal accumulation of foamy macrophages in pulmonary alveoli and a slight increase in biliary hyperplasia.
There was no increase in malignant or total benign plus malignant lung tumors, or in the overall incidence of tumors or malignant tumors. This month study was repeated in CD-1 mice, and no statistically or biologically significant differences were observed between treated and control mice of either sex for any type of tumor. Reproduction toxicity studies in mice, rats and rabbits did not indicate teratogenic potential for metoprolol tartrate.
High doses were associated with some maternal toxicity, and growth delay of the offspring in utero, which was reflected in minimally lower weights at birth. The oral NOAELs for embryo-fetal development in mice, rats, and rabbits were considered to be 25, , and This corresponds to dose levels that are approximately 0.
Metoprolol tartrate has been associated with reversible adverse effects on spermatogenesis starting at oral dose levels of 3. Pregnancy Category C Upon confirming the diagnosis of pregnancy, women should immediately inform the doctor. Metoprolol has been shown to increase postimplantation loss and decrease neonatal survival in rats at doses up to 11 times the maximum daily human dose of mg, when based on surface area.
Distribution studies in mice confirm exposure of the fetus when metoprolol is administered to the pregnant animal. These limited animal studies do not indicate direct or indirect harmful effects with respect to teratogenicity see Carcinogenesis, Mutagenesis, Impairment of Fertility.
There are no adequate and well-controlled studies in pregnant women. The amount of data on the use of metoprolol in pregnant women is limited. Because animal reproduction studies are not always predictive of human response, this drug should be used during pregnancy only if clearly needed.
Nursing Mothers Metoprolol is excreted in breast milk in a very small quantity. An infant consuming 1 liter of breast milk daily would receive a dose of less than 1 mg of the drug. The effects of Metoprolol Tartrate on the fertility of human have not been studied.
Metoprolol Tartrate showed effects on spermatogenesis in male rats at a therapeutic dose level, but had no effect on rates of conception at higher doses in animal fertility studies see Carcinogenesis, Mutagenesis, Impairment of Fertility.
Pediatric Use Safety and effectiveness in pediatric patients have not been established. Geriatric Use Clinical trials of metoprolol tartrate USP, in hypertension did not include sufficient numbers of elderly patients to determine whether patients over 65 years of age differ from younger subjects in their response to metoprolol tartrate.
Other reported clinical experience in elderly hypertensive patients has not identified any difference in response from younger patients.
In worldwide clinical trials of metoprolol tartrate in myocardial infarction, where approximately patients were over 65 years of age 0 over 75 years of age , no age-related differences in safety and effectiveness were found. Other reported clinical experience in myocardial infarction has not identified differences in response between the elderly and younger patients. However, greater sensitivity of some elderly individuals taking metoprolol tartrate cannot be categorically ruled out.
Therefore, in general, it is recommended that dosing proceed with caution in this population. Adverse Reactions Hypertension and Angina Most adverse effects have been mild and transient. Tiredness and dizziness have occurred in about 10 of patients. Depression has been reported in about 5 of patients.
Metoprolol Tartrate 50 mg tablets
Myocardial Infarction Cardiac Failure: Depression has been reported in about 5 of metoprolol. Significant beta-blocking effect as measured by tartrate of exercise heart rate occurs 200mg amoxicillin 1 hour after oral administration, and its duration is dose-related. Your doctor may occasionally change your dose to make sure you get the best tartrates. The effective dosage range of Metoprolol tartrate tablets is to mg per day. Nonetheless, because the overall regimen showed a clear beneficial effect on survival without evidence of an early adverse effect on survival, metoprolol tartrate 20mg, one acceptable dosage regimen is the precise regimen used in the trial. In this study, patients treated with metoprolol received the drug both very early intra-venously and during a subsequent 3-month 20mg, while placebo patients received no beta-blocker treatment for this period. Reproduction toxicity studies in mice, rats and rabbits did not indicate teratogenic potential for metoprolol tartrate. Clinical pharmacology studies have demonstrated the beta-blocking activity of metoprolol, as shown by 1 tartrate in heart rate and cardiac output at rest and upon exercise, metoprolol tartrate 20mg, 2 reduction of systolic blood pressure upon exercise, 3 inhibition metoprolol isoproterenol-induced tachycardia, and 4 reduction of reflex metoprolol tachycardia. What Metoprolol is and what it is used for Metoprolol belongs to a family of medicines known as beta-blockers. The minimum available dose is one half of the 25 mg tablet. Alpha-Adrenergic Agents 20mg effect of alpha-adrenergic blockers such as guanethidine, metoprolol tartrate 20mg, betanidine, reserpine, alpha-methyldopa or clonidine may be potentiated by beta-blockers including Lopressor, metoprolol tartrate 20mg. Very rarely, photosensitivity and worsening of psoriasis has been reported. Metoprolol has been shown to increase postimplantation loss and decrease neonatal survival in rats at 20mg up 20mg 11 times the maximum daily human dose of mg, when based on surface tartrate. The administration of adrenaline epinephrine metoprolol patients undergoing beta-blockade can result in an increase in blood pressure and bradycardia although this is less likely to occur with beta1-selective drugs.
Metoprolol Tartrate 50 MG
The dosage may be increased at weekly or longer intervals until optimum blood pressure reduction is achieved, metoprolol tartrate 20mg. If signs or symptoms of heart failure 20mg, treat the promethazine h 6.25mg according to recommended guidelines. Lidocaine Metoprolol can reduce the clearance of lidocaine. Therefore, in general, it is recommended that dosing proceed with caution in this tartrate. During the intravenous administration of metoprolol, blood pressure, heart rate, and electrocardiogram should be carefully monitored. Metoprolol tartare, USP is a white, practically odorless, metoprolol tartrate 20mg, crystalline powder with a molecular weight of The recommended starting dose is mg of Metoprolol once a day. Chronically administered beta-blocking therapy should not be routinely withdrawn metoprolol to major surgery; however, the impaired ability of the heart to respond to reflex adrenergic stimuli may augment the risks of general anesthesia and surgical procedures. Paroxetine may increase plasma levels of metoprolol resulting in increased beta-blocking effects Ergotamine As beta-blockers may affect the peripheral circulation, metoprolol tartrate 20mg, care should be exercised tartrate drugs with similar activity, e. Diabetes And Hypoglycemia Beta blockers may mask tachycardia occurring with hypoglycemiametoprolol other manifestations such as dizziness and sweating may not 20mg significantly affected.