Trazodone vs. Silenor

See how Trazodone and Silenor compare on approved uses, dosing, side effects, and cost.

Key Takeaways

  • Trazodone is FDA-approved for depression and used off-label for sleep, while Silenor is FDA-approved specifically for sleep-maintenance insomnia.

  • Both drugs list drowsiness as their most common side effect, but trazodone's approved dose range is much higher than Silenor's fixed 3 mg or 6 mg dose.

  • Generic trazodone is typically far cheaper than brand-name Silenor, though a doctor should weigh cost against each drug's approved use before choosing.

Trazodone vs. Silenor Drug Summary

Trazodone

Trazodone is a serotonin antagonist and reuptake inhibitor (SARI) antidepressant approved by the FDA to treat major depressive disorder in adults. At much lower doses, it is widely prescribed off-label as a sleep aid because it causes drowsiness. For depression it is taken in divided daily doses; for off-label sleep use it is typically taken once, at bedtime.

Silenor

Silenor is a tricyclic antidepressant (doxepin) that, at very low doses, acts mainly as a selective antihistamine rather than a standard antidepressant. It is FDA-approved specifically to treat insomnia in adults who have trouble staying asleep. It comes as a 3 mg or 6 mg tablet taken once daily, close to bedtime.

Trazodone vs. Silenor Side Effects

Trazodone

Most common
drowsiness (up to 41%)
dizziness (up to 28%)
headache (up to 20%)
nasal congestion (up to 14%)

Silenor

Most common
somnolence/sedation (up to 9%)
upper respiratory tract infection/nasopharyngitis (up to 4%)
hypertension (up to 3%)
nausea (up to 2%)

Trazodone vs. Silenor Dosage

Trazodone

Dosage
Dosage Table
STAGE DOSE WHEN
Starting dose 25-50 mg at bedtime At the start
Maximum dose 50-100 mg at bedtime If needed
Dose changes 1 increase As tolerated

Silenor

Dosage
Dosage Table
STAGE DOSE WHEN
Starting dose 3 mg once daily At the start
Maximum dose 6 mg once daily If needed
Dose changes 1 increase As tolerated

Trazodone vs. Silenor Indications

Trazodone

Trazodone is FDA-approved to treat major depressive disorder in adults. It is also widely prescribed off-label, at much lower doses, to help with sleep problems, especially trouble staying asleep. This off-label sleep use is common in practice but has not been specifically studied or approved by the FDA.

  • FDA-approved for major depressive disorder (MDD) in adults

  • Off-label use for insomnia, especially sleep maintenance issues

  • Off-label use for anxiety, often when it occurs with depression

  • Not approved for use in children or teens

Silenor

Silenor is FDA-approved to treat insomnia marked by trouble staying asleep through the night. At its low 3 mg and 6 mg doses, it works mainly as an antihistamine rather than a typical antidepressant. Off-label, doxepin at much higher doses is also used to treat depression and anxiety.

  • FDA-approved for sleep-maintenance insomnia in adults

  • Off-label use for depression and anxiety at much higher doxepin doses

  • Not approved for pediatric insomnia

  • Not approved for obstructive sleep apnea

Trazodone vs. Silenor Pros and Cons

Trazodone

Trazodone's sedating effect makes it a popular off-label choice for sleep, backed by decades of clinical use in depression and sleep patients alike. Because it was studied and approved for depression rather than insomnia, its use as a sleep aid relies on clinical experience rather than an insomnia-specific label indication.

Pros

  • Generic and inexpensive, often just a few dollars per month with a discount coupon

  • Also FDA-approved for depression, useful if sleep problems overlap with low mood

  • Available in several tablet strengths, allowing dosing to be fine-tuned

Cons

  • Not FDA-approved for insomnia, so nightly dosing is based on experience, not a studied label dose

  • Carries a boxed warning for increased suicidal thoughts in children and young adults

  • Can cause priapism, a rare but medically urgent side effect in men

  • Higher rates of dizziness and lightheadedness, which can raise fall risk

Silenor

Silenor is the only low-dose doxepin product built and studied specifically for sleep-maintenance insomnia, so its label reflects that exact use. As a narrower, brand-name product, it has less flexibility and a much higher price than a multi-purpose generic like trazodone.

Pros

  • FDA-approved specifically for sleep-maintenance insomnia, backed by insomnia-focused trials

  • Very low doxepin dose limits the anticholinergic and cardiac effects seen at antidepressant doses

  • Simple fixed dosing, 3 mg or 6 mg, with no titration schedule to manage

Cons

  • Costs far more than generic trazodone, roughly $500 to $650 a month before savings programs, versus about $15 to $30 for trazodone

  • Only approved for staying asleep, not for trouble falling asleep

  • Not approved for depression or anxiety, despite being a low-dose antidepressant

  • Newer brand-name option, so there is less long-term real-world use than with trazodone

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