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Indications and usage of diltiazem

Dosages for the treatment of angina should be adjusted to each patient's needs, starting with a dose of 120 mg to 180 mg once daily. Individual patients may respond to higher doses of up to 540 mg once daily. When necessary, titration should be carried out over 7 to 14 days. If any of these effects persist or worsen, tell your doctor or promptly. Sublingual NTG may be taken as required to abort acute anginal attacks during diltiazem hydrochloride tablets therapy. Angina: Diltiazem has been shown to produce increases in exercise tolerance, probably due to its ability to reduce myocardial oxygen demand. This is accomplished via reductions in heart rate and systemic blood pressure at submaximal and maximal workloads. Diltiazem has been shown to be a potent dilator of coronary arteries, both epicardial and subendocardial. Spontaneous and ergonovine-induced coronary artery spasms are inhibited by diltiazem. zentel calgary

Where can I get more information?

As with all drugs, care should be exercised when treating patients with multiple medications. Diltiazem hydrochloride undergoes biotransformation by cytochrome P-450 mixed function oxidase. Co-administration of diltiazem hydrochloride with other agents which follow the same route of biotransformation may result in the competitive inhibition of metabolism. Dosage must be adjusted to each patient's needs. Starting with 30 mg four times daily, before meals and at bedtime, dosage should be increased gradually given in divided doses three or four times daily at 1- to 2-day intervals until optimum response is obtained.

National Library of Medicine and Drugs

The 60 mg tablets are white, film-coated, round, tablets debossed with M over 45 on one side of the tablet and scored on the other side. Cardizem LA following morning doses of placebo or 120, 180, 300, or 540 mg. Diastolic blood pressure measured by supine office cuff sphygmomanometer at trough 7 AM to 9 AM decreased in an apparently linear manner over the dosage range studied. Other: Allergic reactions, angioedema including facial or periorbital edema CPK elevation, epistaxis, eye irritation, gingival hyperplasia, hemolytic anemia, hyperglycemia, impotence, increased bleeding time, leukopenia, muscle cramps, myopathy, nasal congestion, nocturia, osteoarticular pain, polyuria, retinopathy, sexual difficulties, thrombocytopenia, tinnitus.

How should i take diltiazem

Diltiazem comes in a tablet, extended-release tablet, extended-release capsule and injectable form. Metabolic and Nutritional Disorders: Weight increase. Diltiazem hydrochloride extended-release capsules produce antihypertensive effects both in the supine and standing positions. Postural hypotension is infrequently noted upon suddenly assuming an upright position. Diltiazem decreases vascular resistance, increases cardiac output by increasing stroke volume and produces a slight decrease or no change in heart rate. No reflex tachycardia is associated with the chronic antihypertensive effects.



Diltiazem dosage

Extended-release tablets with 120 mg, 180 mg, 240 mg, 300 mg, 360 mg, or 420 mg diltiazem hydrochloride per tablet. Diltiazem Hydrochloride Extended-Release Tablets are white, capsule-shaped, and debossed with “B” on one side and the diltiazem content mg on the other. In renal and cardiac transplant recipients, a reduction of cyclosporine trough dose ranging from 15% to 48% was necessary to maintain concentrations similar to those seen prior to the addition of diltiazem. If these agents are to be administered concurrently, cyclosporine concentrations should be monitored, especially when diltiazem therapy is initiated, adjusted, or discontinued. The effect of cyclosporine on diltiazem plasma concentrations has not been evaluated. The 90 mg tablets are white, film-coated, capsule-shaped tablets debossed with M135 on one side of the tablet and scored on the other side. When necessary, titration may be carried out over a 7 to 14 day period. Following single intravenous injection of diltiazem hydrochloride, however, plasma concentrations of N-mono-desmethyldiltiazem and desacetyldiltiazem, two principal metabolites found in plasma after oral administration, are typically not detected. These metabolites are observed, however, following 24 hour constant rate intravenous infusion. Total radioactivity measurement following short IV administration in healthy volunteers suggests the presence of other unidentified metabolites which attain higher concentrations than those of diltiazem and are more slowly eliminated; half-life of total radioactivity is about 20 hours compared to 2 to 5 hours for diltiazem. High-Degree AV Block: Treat as for bradycardia above. Fixed high-degree AV block should be treated with cardiac pacing. Worsening of heart failure has been reported in patients with impairment of ventricular function. Experience with the use of diltiazem in combination with beta-blockers in patients with impaired ventricular function is limited. Diltiazem hydrochloride is a white to off-white crystalline powder with a bitter taste. It is soluble in water, methanol and chloroform and has a molecular weight of 450. Sinus bradycardia resulting in hospitalization and pacemaker insertion has been reported in association with the use of clonidine concurrently with diltiazem. Monitor heart rate in patients receiving concomitant diltiazem and clonidine. The 120 mg tablets are white, film-coated, capsule-shaped tablets debossed with M525 on one side of the tablet and scored on the other side. Diltiazem hydrochloride has an additive antihypertensive effect when used with other antihypertensive agents. Therefore, the dosage of diltiazem hydrochloride or the concomitant antihypertensives may need to be adjusted when adding one to the other. Diltiazem associated prolongation of the AH interval is not more pronounced in patients with first-degree heart block. In patients with sick sinus syndrome, diltiazem significantly prolongs sinus cycle length up to 50% in some cases.



Keep container tightly closed

CIMETIDINE. A study in six healthy volunteers has shown a significant increase in peak diltiazem plasma levels 58% and area-under-the-curve 53% after a 1-week course of cimetidine at 1200 mg per day and a single dose of diltiazem 60 mg. Ranitidine produced smaller, nonsignificant increases. The effect may be mediated by cimetidine's known inhibition of hepatic cytochrome P-450, the enzyme system responsible for the first-pass metabolism of diltiazem. Patients currently receiving diltiazem therapy should be carefully monitored for a change in pharmacological effect when initiating and discontinuing therapy with cimetidine. An adjustment in the diltiazem dose may be warranted. This list is not complete and other drugs may interact with diltiazem. Tell your doctor about all medications you use. This includes prescription, over-the-counter, vitamin, and herbal products. Do not start a new medication without telling your doctor. Avoid drinking alcohol while taking diltiazem. Whether the time of administration impacts the clinical benefits of antihypertensive treatment is not known. Hypertension: Cardiovascular: First-degree AV block, arrhythmia, postural hypotension, tachycardia, pallor, palpitations, phlebitis, ECG abnormality, ST elevation. Digestive System: Dry mouth, anorexia, tooth disorder, eructation. Administration of diltiazem hydrochloride with digoxin in 24 healthy male subjects increased plasma digoxin concentrations approximately 20%. Another investigator found no increase in digoxin levels in 12 patients with coronary artery disease. Dilacor XR are listed in the table below with placebo-treated patients included for comparison. Diltzac Diltiazem Hydrochloride Extended-Release Capsules, USP Once-a-day dosage 180 mg are available for oral administration as hard gelatin capsules with a white opaque body and a blue green opaque cap. “APO 180” is imprinted on each capsule in black ink. While a dose of Dilacor XR given once daily may produce an antihypertensive effect similar to the same total daily dose given in divided doses, individual dose adjustment may be needed. Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure JNC. Nervous System: Vertigo, hypertonia, paresthesia, dizziness, somnolence. Controlled and uncontrolled domestic studies suggest that concomitant use of diltiazem hydrochloride tablets and beta-blockers is usually well tolerated. Available data are not sufficient, however, to predict the effects of concomitant treatment, particularly in patients with left ventricular dysfunction or cardiac conduction abnormalities. Cardiac Conduction. Diltiazem hydrochloride prolongs AV node refractory periods without significantly prolonging sinus node recovery time, except in patients with sick sinus syndrome. Do not share this medication with others. DESTROY AFTER 1 MONTH AT ROOM TEMPERATURE. minomycin



Diltiazem side effects

Clinical studies of diltiazem did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects. Other reported clinical experience has not identified differences in responses between the elderly and younger patients. In general, dose selection for an elderly patient should be cautious, usually starting at the low end of the dosing range, reflecting the greater frequency of decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy. Intravenous diltiazem and intravenous beta-blockers should not be administered together or in close proximity within a few hours. Desacetyldiltiazem, the major metabolite of diltiazem, which is also present in the plasma at concentrations of 10% to 20% of the parent drug, is approximately 25% to 50% as potent a coronary vasodilator as diltiazem. Angina: Cardiovascular: Palpitations, AV block, sinus bradycardia, bigeminal extrasystole, angina pectoris, hypertension, hypotension, myocardial infarct, myocardial ischemia, syncope, vasodilatation, ventricular extrasystole. Cardizem is a trademark of Valeant Pharmaceuticals International, Inc. or its affiliates. Intravenous diltiazem in doses of 20 mg prolongs AH conduction time and AV node functional and effective refractory periods approximately 20%. In a study involving single oral doses of 300 mg of diltiazem hydrochloride tablets in six normal volunteers, the average maximum PR prolongation was 14% with no instances of greater than first-degree AV block. Diltiazem-associated prolongation of the AH interval is not more pronounced in patients with first-degree heart block. In patients with sick sinus syndrome, diltiazem significantly prolongs sinus cycle length up to 50% in some cases. What should I avoid while taking diltiazem? Diltiazem Hydrochloride Extended-Release Tablets are formulated as a once-a-day extended-release tablet for oral administration containing 120 mg, 180 mg, 240 mg, 300 mg, 360 mg or 420 mg of diltiazem hydrochloride. Steinbach, Manitoba, Canada R5G 1Z7. Talk to your doctor or about lifestyle changes that might benefit you. Sixteen of these reports involved multiple drug ingestions. In man, diltiazem prevents spontaneous and ergonovine-provoked coronary artery spasm. It causes a decrease in peripheral vascular resistance and a modest fall in blood pressure in normotensive individuals and, in exercise tolerance studies in patients with ischemic heart disease, reduces the heart rate-blood pressure product for any given workload. Studies to date, primarily in patients with good ventricular function, have not revealed evidence of a negative inotropic effect; cardiac output, ejection fraction, and left ventricular end-diastolic pressure have not been affected. Such data have no predictive value with respect to effects in patients with poor ventricular function, and increased heart failure has been reported in patients with preexisting impairment of ventricular function. There are as yet few data on the interaction of diltiazem and beta-blockers in patients with poor ventricular function. Resting heart rate is usually slightly reduced by diltiazem. Diltiazem Hydrochloride Extended-Release Tablets. A single 360 mg dose of Diltiazem Hydrochloride Extended-Release Tablets results in detectable plasma levels within 3 to 4 hours and peak plasma levels between 11 and 18 hours; absorption occurs throughout the dosing interval. The apparent elimination half-life for Diltiazem Hydrochloride Extended-Release Tablets after single or multiple dosing is 6 to 9 hours. When Diltiazem Hydrochloride Extended-Release Tablets were coadministered with a high fat content breakfast, diltiazem peak and systemic exposures were not affected indicating that the tablet can be administered without regard to food. This drug may make you dizzy. not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Limit beverages. Once familiarity of the patient's response is established, use in an office setting may be acceptable. These considerations may guide selection of therapy. nart.info azithromycin



Cmax by 2-fold, compared to placebo

Diltiazem Hydrochloride Extended-Release Tablets are supplied as white, capsule-shaped tablets debossed with "B" on one side and the diltiazem content mg on the other. There was an increased incidence of stillbirths at doses of 20 times the human oral antianginal dose or greater. Keep refrigerated until use. Hypertensive or anginal patients who are treated with other formulations of diltiazem can safely be switched to Dilacor XR capsules at the nearest equivalent total daily dose. Subsequent titration to higher or lower doses may, however, be necessary and should be initiated as clinically indicated. Dispense in tight, light resistant container as defined in USP. Renal insufficiency, or even end-stage renal disease, does not appear to influence diltiazem disposition following oral administration. Liver cirrhosis was shown to reduce diltiazem's apparent oral clearance and prolong its half-life. Administration of oral diltiazem in patients with acute myocardial infarction and pulmonary congestion documented by x-ray on admission is contraindicated. Experience with the use of diltiazem hydrochloride injection in patients with impaired ventricular function is limited. Caution should be exercised when using the drug in such patients. FDA pregnancy category C. It is not known whether diltiazem will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant while using this medication. The depression of cardiac contractility, conductivity, and automaticity as well as the vascular dilation associated with anesthetics may be potentiated by calcium channel blockers. When used concomitantly, anesthetics and calcium channel blockers should be titrated carefully. The starting dose of Cartia XT to treat hypertension ranges from 180 to 240 mg once daily. To treat angina, the starting dose range is 120 or 180 mg once daily. There are no well-controlled studies in pregnant women; therefore, use diltiazem in pregnant women only if the potential benefit justifies the potential risk to the fetus. F. DO NOT FREEZE. May be stored at room temperature for up to 1 month. Destroy after 1 month at room temperature. Do not stop taking this medication without first talking to your doctor. If you stop taking diltiazem suddenly, your condition may become worse. CCBs are used to treat hypertension, angina and arrhythmias. In vitro binding studies show diltiazem is 70% to 80% bound to plasma proteins. Competitive in vitro ligand binding studies have also shown diltiazem hydrochloride binding is not altered by therapeutic concentrations of digoxin, hydrochlorothiazide, phenylbutazone, propranolol, salicylic acid, or warfarin. Grapefruit and grapefruit juice may interact with diltiazem. Your doctor may advise you to follow a while taking diltiazem. buy cheap simvastatin mastercard uk



Diltiazem overdose

Anesthetics: The depression of cardiac contractility, conductivity, and automaticity as well as the vascular dilation associated with anesthetics may be potentiated by calcium channel blockers. When used concomitantly, anesthetics and calcium blockers should be titrated carefully. In renal and cardiac transplant recipients, a reduction of cyclosporine dose ranging from 15% to 48% was necessary to maintain cyclosporine trough concentrations similar to those seen prior to the addition of diltiazem. If these agents are to be administered concurrently, cyclosporine concentrations should be monitored, especially when diltiazem therapy is initiated, adjusted, or discontinued. Urogenital System: Cystitis, kidney calculus, impotence, dysmenorrhea, vaginitis, prostate disease. Intravenous diltiazem hydrochloride 20 mg prolongs AH conduction time and AV node functional and effective refractory periods by approximately 20%. In a study involving single oral doses of diltiazem hydrochloride 300 mg in six normal volunteers, the average maximum PR prolongation was 14% with no instances of greater than first-degree AV block. It may take up to two weeks for you to experience the full benefit of this medicine. Pharmacologic studies indicate that there may be additive effects in prolonging AV conduction when using beta-blockers or digitalis concomitantly with diltiazem hydrochloride extended-release capsules, USP see . As with all drugs, care should be exercised when treating patients with multiple medications. Diltiazem is both a substrate and an inhibitor of the cytochrome P450 3A4 enzyme system. Other drugs that are specific substrates, inhibitors, or inducers of the enzyme system may have a significant impact on the efficacy and side effect profile of diltiazem. Events such as myocardial infarction have been observed which are not readily distinguishable from the natural history of the disease for the patient. There are no well-controlled studies in pregnant women; therefore, use diltiazem hydrochloride tablets in pregnant women only if the potential benefit justifies the potential risk to the fetus. Several literature reports have identified cases of diltiazem hydrochloride overdose, some with multiple drug ingestion, with both fatal and non-fatal outcomes. The reported events affected multiple body systems including the cardiovascular system bradycardia, complete heart block, asystole, cardiac failure, arrhythmia, atrial fibrillation, palpitations, hypotension, ischemia, ECG changes respiratory system respiratory failure, hypoxia, dyspnea, pulmonary edema central nervous system loss of consciousness, convulsions, dizziness, confusion, agitation gastrointestinal system nausea, vomiting skin and appendages increased sweating and other systems hypotonia, iliac artery thrombosis, metabolic acidosis, increased blood glucose. The administration of ipecac to induce vomiting and activated charcoal to reduce drug absorption have been advocated as initial means of intervention. It may take up to 2 weeks before you get the full benefit of this drug. Tell your doctor if your condition persists or worsens for example, your routine remain high or increase. Diltiazem can pass into breast milk and may harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby. order eskazole royal



Important information

Gastrointestinal: Constipation, elevated SGOT or alkaline phosphatase, nausea, vomiting. Diltiazem hydrochloride extended-release capsules contain a degradable controlled-release tablet formulation designed to release diltiazem over a 24-hour period. Controlled absorption of diltiazem begins within 1 hour, with maximum plasma concentrations being achieved 4 to 6 hours after administration. The apparent steady-state half-life of diltiazem following once-daily administration of diltiazem hydrochloride extended-release capsules ranges from 5 to 10 hours. This prolongation of half-life is attributed to continued absorption of diltiazem rather than to alterations in its elimination. Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose. Sublingual Nitroglycerin may be taken as required to abort acute anginal attacks during diltiazem hydrochloride therapy. In domestic controlled trials in patients with atrial fibrillation or atrial flutter, bolus administration of diltiazem hydrochloride injection was effective in reducing heart rate by at least 20% in 95% of patients. Diltiazem hydrochloride injection rarely converts atrial fibrillation or atrial flutter to normal sinus rhythm. Following administration of one or two intravenous bolus doses of diltiazem hydrochloride injection, response usually occurs within 3 minutes and maximal heart rate reduction generally occurs in 2 to 7 minutes. Heart rate reduction may last from 1 to 3 hours. If hypotension occurs, it is generally short-lived, but may last from 1 to 3 hours. Diltiazem hydrochloride is extensively metabolized by the liver and excreted by the kidneys and in bile. The risk of toxic reactions to this drug may be greater in patients with impaired renal or hepatic function. Because elderly patients are more likely to have decreased renal function, care should be taken in dose selection, and it may be useful to monitor renal function. As with all drugs, care should be exercised when treating patients with multiple medications. Bradycardia frequently responded favorably to atropine as did heart block, although cardiac pacing was also frequently utilized to treat heart block. Fluids and vasopressors were used to maintain blood pressure, and in cases of cardiac failure, inotropic agents were administered. Diltiazem is excreted in human milk. One report suggests that concentrations in breast milk may approximate serum levels. If use of diltiazem hydrochloride tablets is deemed essential, an alternative method of infant feeding should be instituted. Diltiazem is called a channel blocker. It works by relaxing vessels in the body and so can flow more easily. For either indication and particularly when employing continuous intravenous infusion, the setting should include continuous monitoring of the ECG and frequent measurement of blood pressure. A defibrillator and emergency equipment should be readily available. Because of potential physical incompatibilities, it is recommended that diltiazem hydrochloride not be mixed with any other drugs in the same container.



How to use diltiazem

Beta-Blockers: Controlled and uncontrolled domestic studies suggest that concomitant use of diltiazem hydrochloride and beta-blockers is usually well-tolerated, but available data are not sufficient to predict the effects of concomitant treatment in patients with left ventricular dysfunction or cardiac conduction abnormalities. Administration of diltiazem hydrochloride concomitantly with propranolol in five normal volunteers resulted in increased propranolol levels in all subjects and bioavailability of propranolol was increased approximately 50%. In addition, the following postmarketing events have been reported infrequently in patients receiving diltiazem hydrochloride: acute generalized exanthematous pustulosis, alopecia, erythema multiforme, exfoliative dermatitis, Stevens-Johnson syndrome, toxic epidermal necrolysis, extrapyramidal symptoms, gingival hyperplasia, hemolytic anemia, increased bleeding time, photosensitivity including lichenoid keratosis and hyperpigmentation at sun-exposed skin areas leukopenia, purpura, retinopathy, and thrombocytopenia. In addition, events such as myocardial infarction have been observed which are not readily distinguishable from the natural history of the disease in these patients. A number of well-documented cases of generalized rash, characterized as leukocytoclastic vasculitis, have been reported. However, a definitive cause and effect relationship between these events and diltiazem hydrochloride therapy is yet to be established. There was also no mutagenic response in in vitro bacterial tests. No intrinsic effect on fertility was observed in rats. As with all drugs, care should be exercised when treating patients with multiple medications. Diltiazem is both a substrate and an inhibitor of the cytochrome P-450 3A4 enzyme system. Other drugs that are specific substrates, inhibitors, or inducers of this enzyme system may have a significant impact on the efficacy of and side effect profile of diltiazem. If there is no response to vagal blockage, administer isoproterenol cautiously. Overdosage experience is limited. In the event of overdosage or an exaggerated response, appropriate supportive measures should be employed. The usual dosage range studied in clinical trials was 120 to 540 mg once daily. health shop antivert



Diltiazem adult dosage

In animal models, diltiazem interferes with the slow inward depolarizing current in excitable tissue. Diltiazem causes excitationcontraction uncoupling in various myocardial. Diltiazem produces relaxation of coronary vascular smooth muscle and dilation of both large and small coronary arteries at drug levels which cause little or no negative inotropic effect. The resultant increases in coronary blood flow epicardial and subendocardial occur in ischemic and nonischemic models and are accompanied by dose-dependent decreases in systemic blood pressure and decreases in peripheral resistance. At trough, 24 hours after dosing, exercise tolerance times using a Bruce exercise protocol, increased by 14, 26, 41, 33 and 32 seconds over baseline for placebo and the 120 mg, 240 mg, 360 mg, and 540 mg treated patient groups, respectively. At peak, 8 hours after dosing, exercise tolerance times relative to baseline were statistically significantly increased by 13, 38, 64, 55 and 42 seconds for placebo and 120 mg, 240 mg, 360 mg, and 540 mg diltiazem hydrochloride extended-release capsules, USP treated patients, respectively. Compared to baseline, diltiazem hydrochloride extended-release capsules, USP treated patients experienced statistically significant reductions in anginal attacks and decreased nitroglycerin requirements when compared to placebo treated patients. This value was shown to be similar to the 40% systemic availability reported following administration of an immediate release diltiazem hydrochloride formulation. Diltiazem hydrochloride decreases vascular resistance, increases cardiac output by increasing stroke volume and produces a slight decrease or no change in heart rate. During dynamic exercise, increases in diastolic pressure are inhibited while maximum achievable systolic pressure is usually reduced. Chronic therapy with diltiazem hydrochloride produces no change or an increase in plasma catecholamines. No increased activity of the renin-angiotensin-aldosterone axis has been observed. Have your pressure checked regularly while taking this medication. Learn how to monitor your own pressure at home, and share the results with your doctor. Nervous System: Dizziness, paresthesia. In animal models, diltiazem interferes with the slow inward depolarizing current in excitable tissue. It causes excitation-contraction uncoupling in various myocardial tissues without changes in the configuration of the action potential. Diltiazem produces relaxation of coronary vascular smooth muscle and dilation of both large and small coronary arteries at drug levels which cause little or no negative inotropic effect. The resultant increases in coronary blood flow epicardial and subendocardial occur in ischemic and nonischemic models and are accompanied by dose-dependent decreases in systemic blood pressure and decreases in peripheral resistance. The prolongation of PR interval correlated significantly with plasma diltiazem concentration in normal volunteers using the Sigmoidal Emax model. Changes in heart rate, systolic blood pressure, and diastolic blood pressure did not correlate with diltiazem plasma concentrations in normal volunteers. Reduction in mean arterial pressure correlated linearly with diltiazem plasma concentration in a group of hypertensive patients. TO BE BOUND BY THE TERMS AND CONDITIONS SET FORTH IN THE DISCLAIMER. The following post-marketing reactions have been reported infrequently in patients receiving diltiazem: acute generalized exanthematous pustulosis, allergic reactions, alopecia, angioedema including facial or periorbital edema erythema multiforme, extrapyramidal symptoms, gingival hyperplasia, hemolytic anemia, increased bleeding time, leukopenia, photosensitivity including lichenoid keratosis and hyperpigmentation at sun-exposed skin areas purpura, retinopathy, myopathy, and thrombocytopenia. Diltiazem hydrochloride, USP is a white to off-white crystalline powder with a bitter taste. It is soluble in water, methanol, and chloroform. It has a molecular weight of 450. Swallow diltiazem hydrochloride tablets whole; do not split, crush, or chew the tablets. Take this medication by mouth before meals and at bedtime as directed by your doctor, usually 3 to 4 times a day. Swallow the tablets whole. Do not split, crush, or chew the tablets. Doing so can release all of the drug at once, increasing the risk of side effects. Follow your doctor's directions on how to take this medication. brand clopidogrel generic



General information about diltiazem

LA diltiazem hydrochloride is a nondihydropyridine calcium channel blocker slow channel blocker or calcium antagonist. Other: Amblyopia, asthenia, dry mouth, dyspnea, edema, headache, hyperuricemia. AUC and Cmax versus lovastatin alone. Therefore, the potential for these dermatologic reactions exists following exposure to intravenous diltiazem. Should a dermatologic reaction persist, the drug should be discontinued. These studies revealed, in one species or another, a propensity to cause abnormalities of the skeleton, heart, retina, and tongue. Also observed were reductions in early individual pup weights and pup survival, prolonged delivery and increased incidence of stillbirths. There are no well-controlled studies in pregnant women; therefore, use diltiazem hydrochloride in pregnant women only if the potential benefit justifies the potential risk to the fetus. There is a departure from linearity when dose strengths are increased. A study that compared patients with normal hepatic function to patients with cirrhosis found an increase in half-life and a 69% increase in AUC area-under-the-plasma concentration vs. time curve in the hepatically impaired patients. A single study in nine patients with severely impaired renal functions showed no difference in the pharmacokinetic profile of diltiazem as compared to patients with normal renal function. Decreases in blood pressure associated with diltiazem hydrochloride therapy may occasionally result in symptomatic hypotension. Like other calcium channel antagonists, because of its effect on vascular smooth muscle, diltiazem decreases total peripheral resistance resulting in a decrease in both systolic and diastolic blood pressure. In vivo release of diltiazem occurs throughout the gastrointestinal tract, with controlled release still occurring for up to 24 hours after administration, as determined by radio-labeled methods. As the once daily dose of Dilacor XR was increased, departures from linearity were noted. PSVT under double-blind or open-label conditions. Enhanced effects and increased toxicity of buspirone may be possible during concomitant administration with diltiazem. Subsequent dose adjustments may be necessary during coadministration, and should be based on clinical assessment. alavert



How to take diltiazem

Consult your doctor before -feeding. Safety and effectiveness in children have not been established. Category C: Reproduction studies have been conducted in mice, rats, and rabbits. Administration of doses ranging from 4 to 6 times depending on species the upper limit of the optimum dosage range in clinical trials 480 mg once daily. Hg with placebo, and by -10. Actual treatment and dosage should depend on the severity of the clinical situation as well as the judgment and experience of the treating physician. BID diltiazem SR resulted in a 5-fold increase in mean simvastatin AUC versus simvastatin alone. Subjects with increased average steady-state exposures of diltiazem showed a greater fold increase in simvastatin exposure. Computer-based simulations showed that at a daily dose of 480 mg of diltiazem, an 8- to 9-fold mean increase in simvastatin AUC can be expected. propranolol



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Diltiazem uses


What should I avoid while taking diltiazem?

Statins: Diltiazem has been shown to increase significantly the AUC of some statins. The risk of myopathy and rhabdomyolysis with statins metabolized by CYP3A4 may be increased with concomitant use of diltiazem. When possible, use a non-CYP3A4-metabolized statin together with diltiazem; otherwise, dose adjustments for both diltiazem and the statin should be considered along with close monitoring for signs and symptoms of any statin-related adverse events. As with all drugs, care should be exercised when treating patients with multiple medications. Diltiazem is both a substrate and an inhibitor of the cytochrome P450 3A4 enzyme system. Other drugs that are specific substrates, inhibitors, or inducers of this enzyme system may have a significant impact on the efficacy and side effect profile of diltiazem.

No dose adjustment is necessary

Some doctors have also prescribed diltiazem to prevent migraines, though the evidence supporting its use among people with migraines is not universally accepted. An adjustment in the diltiazem dose may be warranted. Digitalis: Administration of diltiazem hydrochloride with digoxin in 24 healthy male subjects increased plasma digoxin concentrations approximately 20%. Another investigator found no increase in digoxin levels in 12 patients with coronary artery disease. In domestic placebo-controlled angina trials, the incidence of adverse reactions reported during diltiazem therapy was not greater than that reported during placebo therapy.

What are the possible side effects of diltiazem

Events observed following diltiazem overdose included bradycardia, hypotension, heart block, and cardiac failure. RxList is part of the WebMD Health Network. The opinions expressed in the WebMD User Reviews are solely those of the User, who may or may not have medical or scientific training, and do not represent the opinions of WebMD. These member reviews have not been reviewed by a WebMD physician or any member of the WebMD editorial staff for accuracy, balance, objectivity, or any other purpose except for compliance with our Terms and Conditions. Nervous system: Abnormal dreams, amnesia, depression, extrapyramidal symptoms, gait abnormality, hallucinations, insomnia, nervousness, personality change, somnolence, tremor.

AUC compared with simvastatin alone

Diltiazem-associated prolongation of the AH interval is not more pronounced in patients with first-degree heart block. In patients with sick sinus syndrome, diltiazem significantly prolongs sinus cycle length up to 50% in some cases. Intravenous diltiazem in doses of 20 mg prolongs AH conduction time and AV node functional and effective refractory periods by approximately 20%. Drugs which induce or inhibit hepatic microsomal enzymes may alter diltiazem disposition. This characteristic also makes them more suitable for angina than short-acting dihydropyridines.

Like other calcium channel antagonists, diltiazem decreases sinoatrial and atrioventricular conduction in isolated tissues and has a negative inotropic effect in isolated preparations. In the intact animal, prolongation of the AH interval can be seen at higher doses. Similar findings were observed for standing systolic and diastolic blood pressures. The trough 24 hours after a dose antihypertensive effect of Dilacor XR retained more than one-half of the response seen at peak 3-6 hours after administration. It should not be used to treat angina when it occurs. Use other medications such as placed under the to relieve an angina attack as directed by your doctor. Consult your doctor or pharmacist for details. shop spirotone compendium

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