QUAZEPAM

brands

Class

• Neuroscience-based Nomenclature: GABA positive allosteric modulator (GABA-PAM)
• Benzodiazepine (hypnotic)

QUAZEPAM commonly prescribed for

(Bold for FDA approved)

How QUAZEPAM works

• Binds to benzodiazepine receptors at the GABA-A ligand-gated chloride channel complex

• Enhances the inhibitory effects of GABA

• Boosts chloride conductance through GABA-regulated channels

• Inhibitory actions in sleep centers may provide sedative hypnotic effects

How long until QUAZEPAM works

• Generally takes effect in less than an hour

Notable Side Effects

• Sedation, fatigue, depression

• Dizziness, ataxia, slurred speech, weakness

• Forgetfulness, confusion

• Hyperexcitability, nervousness

• Rare hallucinations, mania

• Rare hypotension

• Hypersalivation, dry mouth

• Rebound insomnia when withdrawing from long-term treatment

Life Threatening Side Effects

• Respiratory depression, especially when taken with CNS depressants in overdose

• Rare hepatic dysfunction, renal dysfunction, blood dyscrasias

weight gain

unusual

sedation

common

What to do about QUAZEPAM side effects

• Wait

• To avoid problems with memory, only take quazepam if planning to have a full night’s sleep

• Lower the dose

• Switch to a shorter-acting sedative hypnotic

• Switch to a non-benzodiazepine hypnotic

• Administer flumazenil if side effects are severe or life-threatening

usual dosage range

• 15 mg/day at bedtime

Dosage Forms

• Tablet 15 mg

long term use

• Not generally intended for use beyond 4 weeks

• Because of its relatively longer half-life, quazepam may cause some daytime sedation and/or impaired motor/cognitive function, and may do so progressively over time

habit forming

• Quazepam is a Schedule IV drug

• Some patients may develop dependence and/or tolerance; risk may be greater with higher doses

• History of drug addiction may increase risk of dependence

Renal Impairment

• Recommended dose: 7.5 mg/day

Hepatic Impairment

• Recommended dose: 7.5 mg/day

Cardiac Impairment

• Benzodiazepines have been used to treat insomnia associated with acute myocardial infarction

Elderly

• Recommended dose: 7.5 mg/day

• If 15 mg/day is given initially, try to reduce the dose to 7.5 mg/day after the first 1–2 nights

Children and Adolescents

• Safety and efficacy have not been established

• Long-term effects of quazepam in children/ adolescents are unknown

• Should generally receive lower doses and be more closely monitored

Pregnancy

• Contraindicated for use in pregnancy

• Effective June 30, 2015, the FDA requires changes to the content and format of pregnancy and lactation information in prescription drug labels, including the elimination of the pregnancy letter categories; the Pregnancy and Lactation Labeling Rule (PLLR or final rule) applies only to prescription drugs and will be phased in gradually for drugs approved on or after June 30, 2001

• Infants whose mothers received a benzodiazepine late in pregnancy may experience withdrawal effects

• Neonatal flaccidity has been reported in infants whose mothers took a benzodiazepine during pregnancy

Breast Feeding

• Some drug is found in mother’s breast milk

• Recommended either to discontinue drug or bottle feed

• Effects on infant have been observed and include feeding difficulties, sedation, and weight loss