Triazolam

7 DRUG INTERACTIONS • Use with Opioids : Increase the risk of respiratory depression ( 7.1 ) • Use with Other CNS Depressants : Produces additive CNS depressant effects ( 7.1 ) • Use with CYP 3A4 Inhibitors : Increased risk of adverse reactions ( 4 , 5.8 , 7.1 )

7.1 Drugs Having Clinically Important Interactions With Triazolam Table 2 includes clinically significant drug interactions with triazolam [see Clinical Pharmacology (12.3) ] . Table 2: Clinically Important Drug Interactions with Triazolam Opioids Clinical implication 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.

Prevention or management Limit dosage and duration of concomitant use of triazolam and opioids, and monitor patients closely for respiratory depression and sedation [see Warnings and Precautions (5.1) ] . CNS Depressants Clinical implication Triazolam produces additive CNS depressant effects when co-administered with other CNS depressants. Prevention or management Limit dosage and duration of triazolam during concomitant use with CNS depressants.

Strong Inhibitors of CYP 3A Clinical implication Concomitant use of triazolam with strong CYP3A inhibitors has a profound effect on the clearance of triazolam, resulting in increased concentrations of triazolam and increased risk of adverse reactions [see Clinical Pharmacology (12.3) ]. Prevention or management Do not administer triazolam with a strong CYP3A4 inhibitor [see Contraindications (4) , Warnings and Precautions (5.8) ].

Moderate and Weak Inhibitors of CYP 3A Clinical implication Concomitant use of triazolam with moderate or weak inhibitors of CYP3A inhibitors may increase the concentrations of triazolam, resulting in increased risk of adverse reactions [see Clinical Pharmacology (12.3) ]. Prevention or management Use with caution and consider appropriate dose reduction of triazolam when coadministered with moderate and weak CYP3A inhibitors [see Warnings and Precautions (5.8) ]. Strong Inducers of CYP 3A Clinical implication Coadministration of triazolam with strong inducers of CYP3A4 can significantly decrease the plasma concentration of triazolam and may decrease effectiveness of triazolam.

Prevention or management Caution is recommended during coadministration of triazolam with strong inducers of CYP3A4. Interactions Based on Experience with Other Benzodiazepines or in vitro Studies with Triazolam Clinical implication Available data from clinical studies of benzodiazepines other than triazolam, from in vitro studies with triazolam, or from in vitro studies with benzodiazepines other than triazolam suggest a possible drug interaction with triazolam [see Clinical Pharmacology (12.3) ]. Prevention or management Caution is recommended during coadministration of triazolam with any of these drugs. [see Warnings and Precautions (5.8) ].

8.1 Pregnancy Pregnancy Exposure Registry There is a pregnancy exposure registry that monitors pregnancy outcomes in women exposed to psychiatric medications, including triazolam, during pregnancy. Healthcare providers are encouraged to register patients by calling the National Pregnancy Registry for Psychiatric Medications at 1-866-961-2388 or visiting online at https://womensmentalhealth.org/pregnancyregistry/ . Risk Summary Neonates born to mothers using benzodiazepines late in pregnancy have been reported to experience symptoms of sedation and/or neonatal withdrawal [see Warnings and Precautions (5.10) and Clinical Considerations ] .

Available data from published observational studies of pregnant women exposed to benzodiazepines do not report a clear association with benzodiazepines and major birth defects ( see Data ). The background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2 to 4% and 15 to 20%, respectively.

Clinical Considerations Fetal/Neonatal Adverse Reactions Benzodiazepines cross the placenta and may produce respiratory depression, hypotonia, and sedation in neonates. Monitor neonates exposed to triazolam during pregnancy or labor for signs of sedation, respiratory depression, hypotonia, and feeding problems. Monitor neonates exposed to triazolam during pregnancy for signs of withdrawal. Manage these neonates accordingly [see Warnings and Precautions (5.10) ]. Data Human Data Published data from observational studies on the use of benzodiazepines during pregnancy do not report a clear association with benzodiazepines and major birth defects.

Although early studies reported an increased risk of congenital malformations with diazepam and chlordiazepoxide, there was no consistent pattern noted. In addition, the majority of more recent case-control and cohort studies of benzodiazepine use during pregnancy, which were adjusted for confounding exposures to alcohol, tobacco and other medications, have not confirmed these findings.

Animal Data Oral administration of triazolam to pregnant rats and rabbits during the period of organogenesis caused skeletal developmental changes (variations and malformations) at maternally toxic doses in rats and at doses in rats and rabbits which are approximately equal to or greater than 200 times the maximum recommended human dose (MRHD) of 0.5…