About this trial

The purpose of this study is to assess the relative effectiveness, safety, and durability of the most commonly used prescription (zolpidem, trazodone) and over-the-counter (OTC) (melatonin, diphenhydramine) medications for insomnia, as well as a less commonly used prescription that may have a better risk/benefit profile (doxepin).

Eligibility criteria

Qualifiers

Adults aged 18-80 years.

Meet DSM-5 criteria for Insomnia Disorder.

Score ≥15 on the Insomnia Severity Index (ISI).

Sleep initiation and/or maintenance complaints: ≥30 minutes in duration, occurring ≥3 nights/week, with a duration of ≥3 months.

Disqualifiers

Age < 18 or > 80 years old

Inadequate English language comprehension

Minimal facility with smartphones, computers, i-Pads, or the internet.

Acute or unstable psychiatric conditions

Trial design

Treatments tested in this trial

  • Sleep Hygiene Education
  • Melatonin IR, 3 mg
  • Melatonin IR, 5 mg
  • Diphenhydramine, 25 mg
  • Diphenhydramine, 50 mg
  • Doxepin, 3 mg
  • Doxepin, 6 mg
  • Trazodone, 50 mg
  • Trazodone, 100 mg
  • Placebo
  • Zolpidem, 5 mg
  • Zolpidem, 10 mg

Treatment groups

1,200 Participants
are divided into 6 treatment groups

6

Treatment groups

See each treatment group below.

Locations

1
University of Pennsylvania19104, PhiladelphiaPennsylvania, United States

Sponsors and collaborators

University of Pennsylvania

Lead sponsor

Patient-Centered Outcomes Research Institute

Collaborator