Flurazepam (Dalmane)

Class

Long-acting benzodiazepine hypnotic

Mechanism

Potentiates GABA-A receptor activity, enhancing inhibitory neurotransmission to induce sedation.

FDA-Approved Use

Insomnia characterized by difficulty with sleep onset and/or frequent nighttime awakenings.

Off-Label Use

None well established; generally reserved for short-term hypnotic use only.

Formulation

Oral capsules.

Titration

15 mg p.o. at bedtime.

Dose Range

15–30 mg nightly.

Kinetics

Metabolized primarily by CYP3A4 to long-acting active metabolites with half-lives extending up to several days, causing prolonged sedation. Parent drug half-life is 2–3 hours. Metabolites accumulate with repeated dosing, especially in elderly or those with impaired metabolism.

Common AEs

Next-day sedation, dizziness, confusion, impaired coordination, risk of falls.

Serious/Rare AEs

Excessive sedation, respiratory depression, paradoxical reactions (rare).

Monitoring

Assess sedation level, cognition, and fall risk regularly; avoid use beyond short-term.

Black Box Warning

Risks of concomitant use with opioids leading to respiratory depression and death; use caution

Considerations

Use caution in older adults, dementia, traumatic brain injury (TBI), or cognitive disorders due to risk of prolonged sedation, confusion, and falls. Flurazepam is not recommended for chronic use in geriatric populations.