Trazodone

Trazodone is a triazolopyridine-class antidepressant with a pharmacological profile distinctly suited to sleep applications at low doses. It functions as a serotonin antagonist and reuptake inhibitor (SARI) -- blocking 5-HT2A and 5-HT2C receptors, inhibiting the serotonin transporter at higher doses, and antagonizing histamine H1 and alpha-1 adrenergic receptors. The combination of 5-HT2A antagonism and H1 antihistaminergic activity produces sedation, while the absence of activity at GABA-A receptors (unlike benzodiazepines or Z-drugs) means trazodone carries no risk of physiological dependence or tolerance with continued use.

For insomnia, trazodone is typically prescribed at doses of 25-100 mg taken 30-60 minutes before bedtime. The 50 mg tablet available through FormBlends is the most commonly prescribed dose for primary insomnia management. Trazodone's sleep-promoting effects are apparent at doses well below those used for antidepressant treatment (typically 150-600 mg/day), which is why it has become one of the most commonly prescribed medications for sleep disturbance in the United States. Your provider will determine the starting dose and any titration instructions appropriate for your situation.

Polysomnographic studies of trazodone's effects on sleep architecture have shown increases in slow-wave sleep (SWS, stages N2 and N3), reduced sleep latency, improved sleep continuity, and reduced nighttime awakenings. Unlike benzodiazepines, trazodone has not been shown to suppress REM sleep at doses used for insomnia, which is considered an important quality-of-sleep consideration. These effects on sleep architecture distinguish trazodone from sedating antihistamines (diphenhydramine, doxylamine) that often lose efficacy rapidly and suppress sleep quality.

Trazodone may be appropriate for adults with insomnia characterized by difficulty falling asleep, staying asleep, or non-restorative sleep who have not achieved satisfactory results with sleep hygiene improvements alone, or for those who prefer to avoid agents with dependence potential. It is particularly relevant for individuals who have tried over-the-counter sleep aids without sustained benefit. A licensed provider will review your health history, current medications, and sleep concerns to confirm appropriateness.

Common side effects at sleep doses include next-day sedation (typically diminishing as the body adjusts), dry mouth, dizziness, and orthostatic hypotension, particularly in older adults. Trazodone can interact with MAOIs, other serotonergic drugs, and certain antifungals or antiretrovirals that affect CYP3A4 metabolism. Rare but notable adverse effects include priapism in men (prolonged erection), which should be treated as a medical emergency. Your provider will discuss these considerations and any medication interactions during the online clinical review.