Adult: Doses are individualised, beginning with low doses, and increasing gradually up to the optimum level. Usual dose (outpatient): 1.5-3 mg up to 3 times daily. Severe (hospitalised): 6-12 mg 2-3 times daily; up to 60 mg daily may be given. Treatment duration: Should be as short as possible; not more than 8-12 weeks, including a tapering off process. Elderly: Max: 3 mg daily in divided doses.
Nhóm bệnh nhân đặc biệt
Debilitated patients: Max: 3 mg daily in divided doses.
Dose reduction may be required.
Mild to moderate: Initiate at the lower end of the dosing range. Severe: Contraindicated.
May be taken with or without food.
Chống chỉ định
Myasthenia gravis, severe respiratory insufficiency; sleep apnoea syndrome, narrow-angle glaucoma. Severe hepatic impairment.
Patients with depressive disorders or psychosis, pre-existing or chronic respiratory disease, history of alcohol or drug abuse, psychiatric or personality disorders; or those at risk of falls. Debilitated patients. Avoid abrupt withdrawal. Renal and mild to moderate hepatic impairment. Elderly. Pregnancy and lactation. Concomitant use with opioids.
Tác dụng không mong muốn
Significant: Anterograde amnesia, psychiatric and paradoxical reactions (e.g. agitation, hallucinations, restlessness), sleep-related activities (e.g. sleep-driving, making phone calls, cooking, and eating food while asleep), respiratory depression; physical and psychological dependence. Cardiac disorders: Cardiac failure, cardiac arrest, palpitation, tachycardia. Eye disorders: Blurred vision, diplopia, visual disturbance. Gastrointestinal disorders: Nausea, vomiting, xerostomia, salivation changes. General disorders and administration site conditions: Fatigue. Injury, poisoning and procedural complications: Falls, fractures. Injury, poisoning and procedural complications: Increased serum ALT, AST, alkaline phosphatase, and bilirubin; decreased Hg, increased WBC; changes in EEG patterns. Musculoskeletal and connective tissue disorders: Muscle weakness and spasm Nervous system disorders: Headache, drowsiness, dizziness, vertigo, ataxia, decreased alertness, seizures. Psychiatric disorders: Disorientation, confusional state, depression, emotional and mood disorder, nervousness. Renal and urinary disorders: Urinary incontinence or retention. Reproductive system and breast disorders: Rarely, changes in libido. Skin and subcutaneous tissue disorders: Pruritus, rash. Vascular disorders: Rarely, hypotension.
Thông tin tư vấn bệnh nhân
This drug may cause sedation, amnesia, and impaired muscular function; if affected, do not drive or operate machinery.
Symptoms: Drowsiness, confusion, lethargy, ataxia, dysarthria, nystagmus, areflexia, apnoea, hypotension, hypotonia, cardiorespiratory depression, and coma. Management: Symptomatic and supportive treatment. Monitor vital signs. May administer activated charcoal within 1-2 hours of ingestion, provided that the airway is protected. May administer flumazenil cautiously for severe CNS depression.
Prolonged elimination half-life with propranolol and cimetidine. Increased exposure and elimination half-life with fluvoxamine. Additive CNS depressant effects with centrally acting depressants (e.g. barbiturates, sedatives, anaesthetics, anxiolytics, hypnotics, phenothiazines, other antipsychotics, skeletal muscle relaxants, antihistamines). May potentiate the anticholinergic effects of atropine, antihistamines, and antidepressants. Potentially Fatal: Concomitant use of opioids may result in profound sedation, respiratory depression, and coma.
Tương tác với thức ăn
Food may decrease serum concentration. May enhance the CNS depressant effect of alcohol.; avoid concomitant use.
Description: Bromazepam binds to stereospecific benzodiazepine receptors on the postsynaptic GABA neuron within the CNS (including the limbic system, reticular formation) to which it increases neuronal membrane permeability to chloride ions resulting in hyperpolarisation (a less excitable state) and stabilisation. Pharmacokinetics: Absorption: Rapidly absorbed from the gastrointestinal tract. Food may decrease absorption. Bioavailability: 60%. Time to peak plasma concentration: Within 2 hours. Distribution: Enters breast milk. Volume of distribution: Approx 50 L. Plasma protein binding: 70%, to albumin and α1-acid glycoprotein. Metabolism: Extensively metabolised in the liver via hydroxylation and glucuronidation into 3-hydroxy-bromazepam, and 2-(2-amino-5-bromo-3-hydroxybenzoyl) pyridine metabolites. Excretion: Via urine (69% as metabolites). Elimination half-life: Approx 20 hours.