Triazolam for Sleep Disorders

INDICATIONS AND USAGE Triazolam is indicated for the short-term treatment of insomnia (generally 7–10 days). Use for more than 2–3 weeks requires complete reevaluation of the patient (see WARNINGS ). Prescriptions for triazolam should be written for short-term use (7–10 days) and it should not be prescribed in quantities exceeding a 1-month supply.

DOSAGE AND ADMINISTRATION Adults: Recommended dosage is 0.25 mg once daily before bedtime. Maximum recommended dosage is 0.5 mg once daily ( 2.1 ) Geriatric patients: Reduce starting dosage to 0.125 mg once daily. May increase to 0.25 mg if no response. Geriatric patients should not exceed 0.25 mg once daily ( 2.2 , 8.5 ) Triazolam tablets should not be prescribed in quantities exceeding a 1-month supply ( 2.1 ) 2.1 Dosing Information The recommended dosage is 0.25 mg once daily before bedtime. A dosage of 0.125 mg once daily may be sufficient for some patients (e.g., patients with low body weight). A dosage of 0.5 mg should be used only for patients who do not respond adequately to a trial of a lower dose. The maximum recommended dosage is 0.5 mg once daily. Use the lowest effective dose for the patient as there are significant dose related adverse reactions. Use of triazolam tablets for more than 3 weeks requires evaluation of the patient for a primary psychiatric or medical condition [ see Warnings and Precautions ( 5.4 , 5.6 ) ] . Prescriptions for triazolam tablets should be written for short-term use (7 to 10 days) and it should not be prescribed in quantities exceeding a 1-month supply. 2.2 Use in Geriatric Patients In geriatric patients, the recommended dosage is 0.125 mg to 0.25 mg once daily. Initiate therapy at 0.125 mg once daily. The 0.25 mg dose should be used only for patients who do not respond to a trial of the lower dose. The maximum recommended dosage is 0.25 mg once daily. Elderly patients have an increased risk of dose related adverse reactions [ see Use in Specific Populations ( 8.5 )] . 2.3 Discontinuation or Dosage Reduction of Triazolam Tablets To reduce the risk of withdrawal reactions, use a gradual taper to discontinue triazolam or reduce the dosage. If a patient develops withdrawal reactions, consider pausing the taper or increasing the dosage to the previous tapered dosage level. Subsequently decrease the dosage more slowly [see Warnings and Precautions ( 5.3 ), Drug Abuse and Dependence ( 9.3 )] .

WARNINGS AND PRECAUTIONS Persistent or Worsening Insomnia : Since sleep disturbances may be the presenting manifestation of a physical and/or psychiatric disorder, symptomatic treatment of insomnia should be initiated only after a careful evaluation of the patient. The failure of insomnia to remit after 7 to 10 days of treatment may indicate the presence of a primary psychiatric and/or medical illness that should be evaluated. ( 5.4 ) "Sleep-driving" and Other Complex Behaviors : Complex behaviors such as "sleep-driving" have been reported. The use of alcohol and other central nervous system (CNS) depressants with sedative-hypnotics appears to increase the risk, as well as doses exceeding the maximum recommended dose. ( 5.5 ) CNS Manifestations: An increase in daytime anxiety, abnormal thinking, and behavioral changes have been reported. Emergence of any new behavioral changes require careful and immediate evaluation. ( 5.6 ) Effects on Driving and Operating Heavy Machinery: Patients receiving triazolam should be cautioned against driving or operating heavy machinery, as well as avoiding concomitant use with alcohol and other CNS depressant drugs. ( 5.7 ) Patients with Depression: Caution should be exercised in patients with signs or symptoms of depression that could be intensified by hypnotic drugs. Prescribe the least number of tablets feasible to avoid intentional overdose. ( 5.9 ) Neonatal Sedation and Withdrawal Syndrome : Triazolam use during pregnancy can result in neonatal sedation and/or neonatal withdrawal. ( 5.10 , 8.1 ) 5.1 Risks From Concomitant Use With Opioids Concomitant use of benzodiazepines, including triazolam, and opioids may result in profound sedation, respiratory depression, coma, and death. Because of these risks, reserve concomitant prescribing of these drugs in patients for whom alternative treatment options are inadequate. Observational studies have demonstrated that concomitant use of opioid analgesics and benzodiazepines increases the risk of drug-related mortality compared to use of opioids alone. If a decision is made to prescribe triazolam concomitantly with opioids, prescribe the lowest effective dosages and minimum durations of concomitant use, and follow patients closely for signs and symptoms of respiratory depression and sedation. In patients already receiving an opioid analgesic, prescribe a lower initial dose of triazolam than indicated in the absence of an opioid and titrate based on clinical response. If an opioid is initiated in a patient already taking triazolam, prescribe a lower initial dose of the opioid and titrate based upon clinical response. Advise both patients and caregivers about the risks of respiratory depression and sedation when triazolam is used with opioids. Advise patients not to drive or operate heavy machinery until the effects of concomitant use with the opioid have been determined [see Drug Interactions ( 7.1 )] . 5.2 Abuse, Misuse and Addiction The use of benzodiazepines, including triazolam, exposes users to the risks of abuse, misuse and addiction, which can lead to overdose or death. Abuse and misuse of benzodiazepines often (but not always) involve the use of doses greater than the maximum recommended dosage and commonly involve concomitant use of other medications, alcohol and/or illicit substances, which is associated with an increased frequency of serious adverse outcomes, including respiratory depression, overdose or death [see Drug Abuse and Dependence ( 9.2 )] . Before prescribing triazolam and throughout treatment, assess each patient's risk for abuse, misuse and addiction (e.g., using a standardized screening tool). Use of triazolam, particularly in patients at elevated risk, necessitates counseling about the risks and proper use of triazolam along with monitoring for signs and symptoms of abuse, misuse and addiction. Prescribe the lowest effective dosage; avoid or minimize concomitant use of CNS depressants and other substances associated with abuse, misuse and addiction (e.g., opioid analgesics, stimulants); and advise patients on the proper disposal of unused drug. If a substance use disorder is suspected, evaluate the patient and institute (or refer them for) early treatment, as appropriate. 5.3 Dependence and Withdrawal Reactions To reduce the risk of withdrawal reactions, use a gradual taper to discontinue triazolam or reduce the dosage (a patient-specific plan should be used to taper the dose) [see Dosage and Administration ( 2.3 )] . Patients at an increased risk of withdrawal adverse reactions after benzodiazepine discontinuation or rapid dosage reduction include those who take higher dosages and those who have had longer durations of use. Acute Withdrawal Reactions The continued use of benzodiazepines, including triazolam, may lead to clinically significant physical dependence. Abrupt discontinuation or rapid dosage reduction of triazolam after continued use or administration of flumazenil (a benzodiazepine antagonist) may precipitate acute withdrawal reactions, which can be life-threatening (e.g., seizures) [see Drug Abuse and Dependence ( 9.3 )] . Protracted Withdrawal Syndrome In some cases, benzodiazepine users have developed a protracted withdrawal syndrome with withdrawal symptoms lasting weeks to more than 12 months [see Drug Abuse and Dependence ( 9.3 )] . 5.4 Persistent or Worsening Insomnia Since sleep disturbances may be the presenting manifestation of a physical and/or psychiatric disorder, symptomatic treatment of insomnia should be initiated only after a careful evaluation of the patient. The failure of insomnia to remit after 7 to 10 days of treatment may indicate the presence of a primary psychiatric and/or medical illness that should be evaluated. Worsening of insomnia or the emergence of new thinking or behavior abnormalities may be the consequence of an unrecognized psychiatric or physical disorder. Such findings have emerged during the course of treatment with sedative-hypnotic drugs. 5.5 "Sleep-driving" and Other Complex Behaviors Complex behaviors such as "sleep-driving" (i.e., driving while not fully awake after ingestion of a sedative-hypnotic, with amnesia for the event) have been reported with triazolam use. These events can occur in sedative-hypnotic-naïve as well as in sedative-hypnotic-experienced persons. Although behaviors such as sleep-driving may occur with sedative-hypnotics alone at recommended dosages, the use of alcohol and other central nervous system (CNS) depressants with sedative-hypnotics appears to increase the risk of such behaviors, as does the use of sedative-hypnotics at doses exceeding the maximum recommended dose. Due to the risk to the patient and the community, discontinuation of sedative-hypnotics should be strongly considered for patients who report a "sleep-driving" episode. Other complex behaviors (e.g., preparing and eating food, making phone calls, or having sex) have been reported in patients who are not fully awake after taking a sedative-hypnotic, including triazolam. As with sleep-driving, patients usually do not remember these events. 5.6 Central Nervous System Manifestations An increase in daytime anxiety has been reported for triazolam after as few as 10 days of continuous use. In some patients this may be a manifestation of interdose withdrawal. If increased daytime anxiety is observed during treatment, discontinuation of treatment may be advisable. A variety of abnormal thinking and behavior changes have been reported to occur in association with the use of benzodiazepine hypnotics including triazolam. Some of these changes may be characterized by decreased inhibition, e.g., aggressiveness and extroversion that seem excessive, similar to that seen with alcohol and other CNS depressants (e.g., sedative/hypnotics). Other kinds of behavioral changes have also been reported, for example, bizarre behavior, agitation, hallucinations, depersonalization. In primarily depressed patients, the worsening of d

Drug interactions The concomitant use of benzodiazepines and opioids increases the risk of respiratory depression because of actions at different receptor sites in the CNS that control respiration. Benzodiazepines interact at GABA A sites and opioids interact primarily at mu receptors. When benzodiazepines and opioids are combined, the potential for benzodiazepines to significantly worsen opioid-related respiratory depression exists. Limit dosage and duration of concomitant use of benzodiazepines and opioids, and monitor patients closely for respiratory depression and sedation. Both pharmacodynamic and pharmacokinetic interactions have been reported with benzodiazepines. In particular, triazolam produces additive CNS depressant effects when coadministered with other psychotropic medications, anticonvulsants, antihistamines, ethanol, and other drugs which themselves produce CNS depression. Drugs that inhibit triazolam metabolism via cytochrome P450 3A The initial step in triazolam metabolism is hydroxylation catalyzed by cytochrome P450 3A (CYP 3A). Drugs which inhibit this metabolic pathway may have a profound effect on the clearance of triazolam (see CONTRAINDICATIONS and WARNINGS for additional drugs of this type). Triazolam is contraindicated with ketoconzaole, itraconazole, nefazodone, and several HIV protease inhibitors. Drugs and other substances demonstrated to be CYP 3A inhibitors of possible clinical significance on the basis of clinical studies involving triazolam (caution is recommended during coadministration with triazolam) Isoniazid Coadministration of isoniazid increased the maximum plasma concentration of triazolam by 20%, decreased clearance by 42%, and increased half-life by 31%. Oral contraceptives Coadministration of oral contraceptives increased maximum plasma concentration by 6%, decreased clearance by 32%, and increased half-life by 16%. Grapefruit juice Coadministration of grapefruit juice increased the maximum plasma concentration of triazolam by 25%, increased the area under the concentration curve by 48%, and increased half-life by 18%. Drugs demonstrated to be CYP 3A inhibitors on the basis of clinical studies involving benzodiazepines metabolized similarly to triazolam or on the basis of in vitro studies with triazolam or other benzodiazepines (caution is recommended during coadministration with triazolam) Available data from clinical studies of benzodiazepines other than triazolam suggest a possible drug interaction with triazolam for the following: fluvoxamine, diltiazem, and verapamil. Data from in vitro studies of triazolam suggest a possible drug interaction with triazolam for the following: sertraline and paroxetine. Data from in vitro studies of benzodiazepines other than triazolam suggest a possible drug interaction with triazolam for the following: ergotamine, cyclosporine, amiodarone, nicardipine, and nifedipine. Caution is recommended during coadministration of any of these drugs with triazolam (see WARNINGS ). Drugs that affect triazolam pharmacokinetics by other mechanisms Ranitidine Coadministration of ranitidine increased the maximum plasma concentration of triazolam by 30%, increased the area under the concentration curve by 27%, and increased half-life by 3.3%. Caution is recommended during coadministration with triazolam.

ADVERSE REACTIONS During placebo-controlled clinical studies in which 1,003 patients received triazolam tablets, the most troublesome side effects were extensions of the pharmacologic activity of triazolam, eg, drowsiness, dizziness, or light-headedness. The figures cited below are estimates of untoward clinical event incidence among subjects who participated in the relatively short duration (i.e., 1 to 42 days) placebo-controlled clinical trials of triazolam. The figures cannot be used to predict precisely the incidence of untoward events in the course of usual medical practice where patient characteristics and other factors often differ from those in clinical trials. These figures cannot be compared with those obtained from other clinical studies involving related drug products and placebo, as each group of drug trials is conducted under a different set of conditions. Comparison of the cited figures, however, can provide the prescriber with some basis for estimating the relative contributions of drug and nondrug factors to the untoward event incidence rate in the population studied. Even this use must be approached cautiously, as a drug may relieve a symptom in one patient while inducing it in others. (For example, an anticholinergic, anxiolytic drug may relieve dry mouth [a sign of anxiety] in some subjects but induce it [an untoward event] in others.) Triazolam PLACEBO Number of Patients 1003 997 % Patients Reporting: Central Nervous System Drowsiness 14.0 6.4 Headache 9.7 8.4 Dizziness 7.8 3.1 Nervousness 5.2 4.5 Light-headedness 4.9 0.9 Coordination disorders/ataxia 4.6 0.8 Gastrointestinal Nausea/vomiting 4.6 3.7 In addition to the relatively common (i.e., 1% or greater) untoward events enumerated above, the following adverse events have been reported less frequently (i.e., 0.9% to0.5%): euphoria, tachycardia, tiredness, confusional states/memory impairment, cramps/pain, depression, visual disturbances. Rare (i.e., less than 0.5%) adverse reactions included constipation, taste alterations, diarrhea, dry mouth, dermatitis/allergy, dreaming/nightmares, insomnia, paresthesia, tinnitus, dysesthesia, weakness, congestion, death from hepatic failure in a patient also receiving diuretic drugs. In addition to these untoward events for which estimates of incidence are available, the following adverse events have been reported in association with the use of triazolam and other benzodiazepines: amnestic symptoms (anterograde amnesia with appropriate or inappropriate behavior), confusional states (disorientation, derealization, depersonalization, and/or clouding of consciousness), dystonia, anorexia, fatigue, sedation, slurred speech, jaundice, pruritus, dysarthria, changes in libido, menstrual irregularities, incontinence, and urinary retention. Other factors may contribute to some of these reactions, eg, concomitant intake of alcohol or other drugs, sleep deprivation, an abnormal premorbid state, etc. Other events reported include: paradoxical reactions such as stimulation, mania, an agitational state (restlessness, irritability, and excitation), increased muscle spasticity, sleep disturbances, hallucinations, delusions, aggressiveness, falling, somnambulism, syncope, inappropriate behavior and other adverse behavioral effects. Should these occur, use of the drug should be discontinued. The following events have also been reported: chest pain, burning tongue/glossitis/stomatitis. Laboratory analyses were performed on all patients participating in the clinical program for triazolam. The following incidences of abnormalities were observed in patients receiving triazolam and the corresponding placebo group. None of these changes were considered to be of physiological significance. Triazolam PLACEBO Number of Patients 380 361 % of Patients Reporting: Low High Low High Hematology Hematocrit Less than 1% Hemoglobin Total WBC count 1.7 2.1 1.3 Neutrophil count 1.5 1.5 3.3 1.0 Lymphocyte count 2.3 4.0 3.1 3.8 Monocyte count 3.6 4.4 1.5 Eosinophil count 10.2 3.2 9.8 3.4 Basophil count 1.7 2.1 1.8 Urinalysis Albumin — 1.1 — Sugar — — RBC/HPF — 2.9 — 2.9 WBC/HPF — 11.7 — 7.9 Blood chemistry Creatinine 2.4 1.9 3.6 1.5 Bilirubin 1.5 1.0 SGOT 5.3 4.5 Alkaline phosphatase 2.2 2.6 When treatment with triazolam is protracted, periodic blood counts, urinalysis, and blood chemistry analyses are advisable. Minor changes in EEG patterns, usually low-voltage fast activity, have been observed in patients during therapy with triazolam and are of no known significance.