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Kava Kava
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Melatonin
Look Up > Drugs > Triazolam
Triazolam
Pronunciation
U.S. Brand Names
Generic Available
Canadian Brand Names
Pharmacological Index
Use
Restrictions
Pregnancy Risk Factor
Contraindications
Warnings/Precautions
Adverse Reactions
Overdosage/Toxicology
Drug Interactions
Mechanism of Action
Pharmacodynamics/Kinetics
Usual Dosage
Dietary Considerations
Monitoring Parameters
Dental Health: Local Anesthetic/Vasoconstrictor Precautions
Dental Health: Effects on Dental Treatment
Patient Information
Nursing Implications
Dosage Forms
References

Pronunciation
(trye AY zoe lam)

U.S. Brand Names
Halcion®

Generic Available

No


Canadian Brand Names
Apo®-Triazo; Gen-Triazolam; Novo-Triolam; Nu-Triazo

Pharmacological Index

Benzodiazepine


Use

Short-term treatment of insomnia


Restrictions

C-IV


Pregnancy Risk Factor

X


Contraindications

Hypersensitivity to this drug or any component of its formulation (cross-sensitivity with other benzodiazepines may exist); concurrent therapy with CYP3A4 inhibitors (such as ketoconazole, itraconazole, protease inhibitors and nefazodone); pregnancy


Warnings/Precautions

Should be used only after evaluation of potential causes of sleep disturbance. Failure of sleep disturbance to resolve after 7-10 days may indicate psychiatric or medical illness. A worsening of insomnia or the emergence of new abnormalities of thought or behavior may represent unrecognized psychiatric or medical illness and requires immediate and careful evaluation.

Causes CNS depression (dose-related) resulting in sedation, dizziness, confusion, or ataxia which may impair physical and mental capabilities. Patients must be cautioned about performing tasks which require mental alertness (ie, operating machinery or driving). Use with caution in patients receiving other CNS depressants or psychoactive agents. Effects with other sedative drugs or ethanol may be potentiated. Benzodiazepines have been associated with falls and traumatic injury and should be used with extreme caution in patients who are at risk of these events (especially the elderly).

Use caution in patients with depression, particularly if suicidal risk may be present. Use with caution in patients with a history of drug dependence. Benzodiazepines have been associated with dependence and acute withdrawal symptoms on discontinuation or reduction in dose. Acute withdrawal, including seizures, may be precipitated after administration of flumazenil to patients receiving long-term benzodiazepine therapy.

Paradoxical reactions, including hyperactive or aggressive behavior have been reported with benzodiazepines, particularly in adolescent/pediatric or psychiatric patients. Does not have analgesic, antidepressant, or antipsychotic properties.


Adverse Reactions

>10%: Central nervous system: Drowsiness

1% to 10%:

Central nervous system: Headache, dizziness, nervousness, lightheadedness, ataxia

Gastrointestinal: Nausea, vomiting

<1%: Tachycardia, euphoria, fatigue, confusion, depression, memory impairment, visual disturbance, pain, cramps


Overdosage/Toxicology

Symptoms of overdose include somnolence, confusion, coma, diminished reflexes, dyspnea, and hypotension

Treatment for benzodiazepine overdose is supportive. Rarely is mechanical ventilation required. Flumazenil has been shown to selectively block the binding of benzodiazepines to CNS receptors, resulting in a reversal of benzodiazepine-induced CNS depression but not always respiratory depression.


Drug Interactions

CYP3A3/4 and 3A5-7 enzyme substrate

Cimetidine, ciprofloxacin, clarithromycin, clozapine, CNS depressants, diltiazem, disulfiram, digoxin, erythromycin, ethanol, fluconazole, fluoxetine, fluvoxamine, grapefruit juice, isoniazid, itraconazole, ketoconazole, labetalol, levodopa, loxapine, metoprolol, metronidazole, miconazole, nefazodone, omeprazole, phenytoin, rifabutin, rifampin, troleandomycin, valproic acid, protease inhibitors like amprenavir and ritonavir, verapamil may increase the serum level and/or toxicity of triazolam; monitor for altered benzodiazepine response


Mechanism of Action

Binds to stereospecific benzodiazepine receptors on the postsynaptic GABA neuron at several sites within the central nervous system, including the limbic system, reticular formation. Enhancement of the inhibitory effect of GABA on neuronal excitability results by increased neuronal membrane permeability to chloride ions. This shift in chloride ions results in hyperpolarization (a less excitable state) and stabilization.


Pharmacodynamics/Kinetics

Onset of hypnotic effect: Within 15-30 minutes

Duration: 6-7 hours

Distribution: Vd: 0.8-1.8 L/kg

Protein binding: 89%

Metabolism: Extensively in the liver

Half-life: 1.7-5 hours

Elimination: In urine as unchanged drug and metabolites


Usual Dosage

Onset of action is rapid, patient should be in bed when taking medication

Children <18 years: Dosage not established

Adults: 0.125-0.25 mg at bedtime

Dosing adjustment/comments in hepatic impairment: Reduce dose or avoid use in cirrhosis


Dietary Considerations

Alcohol: Additive CNS effect, avoid use


Monitoring Parameters

Respiratory and cardiovascular status


Dental Health: Local Anesthetic/Vasoconstrictor Precautions

No information available to require special precautions


Dental Health: Effects on Dental Treatment

No effects or complications reported


Patient Information

Take exactly as directed (do not increase dose or frequency); may take 2-3 weeks to achieve desired results; may cause physical and/or psychological dependence. Do not use excessive alcohol or other prescription or OTC medications (especially pain medications, sedatives, antihistamines, or hypnotics) without consulting prescriber. Maintain adequate hydration (2-3 L/day of fluids unless instructed to restrict fluid intake). You may experience drowsiness, lightheadedness, impaired coordination, dizziness, or blurred vision (use caution when driving or engaging in tasks requiring alertness until response to drug is known); nausea, vomiting, or dry mouth (small frequent meals, frequent mouth care, chewing gum, or sucking lozenges may help); constipation (increased exercise, fluids, or dietary fruit and fiber may help); altered sexual drive or ability (reversible); or photosensitivity (use sunscreen, wear protective clothing and eyewear, and avoid direct sunlight). Report persistent CNS effects (eg, memory impairment, confusion, depression, increased sedation, excitation, headache, agitation, insomnia or nightmares, dizziness, fatigue, impaired coordination, changes in personality, or changes in cognition); changes in urinary pattern; muscle cramping, weakness, tremors, or rigidity; ringing in ears or visual disturbances; chest pain, palpitations, or rapid heartbeat; excessive perspiration; excessive GI symptoms (cramping, constipation, vomiting, anorexia); or worsening of condition. Pregnancy/breast-feeding precautions: Inform prescriber if you are pregnant. Do not get pregnant during or for 1 month following therapy. Consult prescriber for instruction on appropriate contraceptive measures. This drug may cause severe fetal defects. Breast-feeding is not recommended.


Nursing Implications

Patients may require assistance with ambulation; lower doses in the elderly are usually effective; institute safety measures


Dosage Forms

Tablet: 0.125 mg, 0.25 mg


References

Berthold CW, Dionne RA, and Corey SE, "Comparison of Sublingually and Orally Administered Triazolam for Premedication Before Oral Surgery," Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 1997, 84(2):119-24.

Berthold CW, Schneider A, and Dionne RA, "Using Triazolam to Reduce Dental Anxiety," J Am Dent Assoc, 1993, 124(11):58-64.

Chan TH, Ho SS, and Li PK, "Noncardiogenic Pulmonary Edema Associated With Triazolam," J Toxicol Clin Toxicol, 1995, 33(2):185-7.

Gillin JC and Byerley WF, "Drug Therapy: The Diagnosis and Management of Insomnia," N Engl J Med, 1990, 322(4):239-48.

Greenblatt DJ, Harmatz JS, Shapiro L, et al, "Sensitivity to Triazolam in the Elderly," N Engl J Med, 1991, 324(24):1691-8.

Greenblatt DJ, von Moltke LL, Harmatz JS, et al, "Interaction of Triazolam and Ketoconazole," Lancet, 1995, 345(8943):191.

Hukkinen SK, Varhe A, Olkkola KT, et al, "Plasma Concentrations of Triazolam Are Increased by Concomitant Ingestion of Grapefruit Juice," Clin Pharmacol Ther, 1995, 58(2):127-31.

Kaufman E, Hargreaves KM, and Dionne RA, "Comparison of Oral Triazolam and Nitrous Oxide With Placebo and Intravenous Diazepam for Outpatient Premedication," Oral Surg Oral Med Oral Pathol, 1993, 75(2):156-64.

Kurzrock M, "Triazolam and Dental Anxiety," J Am Dent Assoc, 1994, 125(4):358, 360.

Lieblich SE and Horswell B, "Attenuation of Anxiety in Ambulatory Oral Surgery Patients With Oral Triazolam," J Oral Maxillofac Surg, 1991, 49(8):792-7.

McKinnon NE, "Triazolam Intoxication," Can Med Assoc J, 1982, 126(8):893-4.

Meyer ML, Mourino AP, and Farrington FH, "Comparison of Triazolam to a Chloral Hydrate/Hydroxyzine Combination in the Sedation of Pediatric Dental Patients," Pediatr Dent, 1990, 12(5):283-7.

Milgrom P, Quarnstrom FC, Longley A, et al, "The Efficacy and Memory Effects of Oral Triazolam Premedication in Highly Anxious Dental Patients," Anesth Prog, 1994, 41(3):70-6.

Olson KR, Yin L, Osterloh J, et al, "Coma Caused by Trivial Triazolam Overdose," Am J Emerg Med, 1985, 3(3):210-1.

Sullivan RJ Jr, "Respiratory Depression Requiring Ventilatory Support Following 0.5 mg of Triazolam," J Am Geriatr Soc, 1989, 37(5):450-2.

Sunter JP, Bal TS, and Cowan WK, "Three Cases of Fatal Triazolam Poisoning," Br Med J (Clin Res Ed), 1988, 297(6650):719.

Varhe A, Olkkola KT, and Neuvonen PJ, "Oral Triazolam is Potentially Hazardous to Patients Receiving Systemic Antimycotics Ketoconazole or Itraconazole," Clin Pharmacol Ther, 1994, 56(6 Pt 1):601-7.

Votey SR, Bosse GM, Bayer MJ, et al, "Flumazenil: A New Benzodiazepine Antagonist," Ann Emerg Med, 1991, 20(2):181-8.


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