Quviviq vs. Silenor

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

Key Takeaways

  • Quviviq is a controlled substance approved for trouble falling asleep and staying asleep, while Silenor is not controlled and is approved only for staying asleep.

  • Quviviq blocks orexin signaling to quiet wakefulness, while Silenor works through a low-dose antihistamine effect borrowed from an antidepressant.

  • Both drugs cause similar rates of somnolence and nasopharyngitis, but Silenor carries added contraindications around glaucoma, urinary retention, and MAOI use.

Quviviq vs. Silenor Drug Summary

Quviviq

Quviviq (daridorexant) is a dual orexin receptor antagonist that treats insomnia by blocking the brain chemicals that keep you awake. It's FDA-approved for adults who have trouble falling asleep, staying asleep, or both. It comes as a single 25 mg or 50 mg tablet taken once nightly.

Silenor

Silenor (doxepin) is a tricyclic antidepressant used at very low doses to work as a sleep aid rather than an antidepressant. It's FDA-approved specifically for insomnia involving trouble staying asleep through the night. It comes as a single 3 mg or 6 mg tablet taken once daily before bed.

Quviviq vs. Silenor Side Effects

Quviviq

Most common
nasopharyngitis (up to 9.0%)
headache (up to 6.5%)
somnolence (5% to 7%)
nausea (1% to <5%)

Silenor

Most common
Somnolence/sedation (up to 9%)
URI/nasopharyngitis (up to 4%)
hypertension (up to 3%)
nausea (up to 2%)

Quviviq vs. Silenor Dosage

Quviviq

Dosage
Dosage Table
STAGE DOSE WHEN
Starting dose 25 mg once nightly At the start
Maximum dose 50 mg once nightly 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

Quviviq vs. Silenor Indications

Quviviq

Quviviq is approved for adults with insomnia, covering both difficulty falling asleep and difficulty staying asleep. It is not approved for narcolepsy and is a Schedule IV controlled substance, so prescribers monitor for misuse potential.

  • Difficulty falling asleep

  • Difficulty staying asleep

  • Adults only

  • Not approved for narcolepsy

  • Schedule IV controlled substance

Silenor

Silenor is approved specifically for insomnia involving trouble staying asleep through the night, not for trouble falling asleep. It is sometimes used off-label at much higher doses to treat depression or anxiety, though that use is unrelated to its Silenor indication.

  • Difficulty staying asleep

  • Not approved for falling asleep

  • Not approved for pediatric insomnia

  • Not approved for sleep apnea

  • Off-label at higher doses for depression/anxiety

Quviviq vs. Silenor Pros and Cons

Quviviq

Quviviq's orexin-blocking mechanism is newer and shows no evidence of physical dependence or withdrawal in trials. It covers both sleep onset and sleep maintenance problems, but as a Schedule IV drug it requires added prescribing oversight.

Pros

  • Targets both falling asleep and staying asleep

  • No evidence of dependence or withdrawal in trials

  • No dose adjustment needed for kidney problems

  • Newer mechanism with a distinct safety profile

Cons

  • Schedule IV controlled substance

  • Less long-term real-world data since its 2022 approval

  • Dose reduction needed with moderate liver impairment

  • Not recommended in severe liver impairment

Silenor

Silenor has been on the market since 2010 and is not a controlled substance, with no abuse potential shown in studies. It only treats sleep maintenance, not trouble falling asleep, and carries contraindications tied to its antidepressant origins.

Pros

  • Not a controlled substance

  • No abuse potential shown in studies

  • Long track record since 2010 approval

  • Very low dose limits antidepressant-level effects

Cons

  • Only approved for staying asleep, not falling asleep

  • Contraindicated with narrow-angle glaucoma

  • Contraindicated with severe urinary retention

  • Not recommended for severe sleep apnea

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