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
Silenor
Quviviq vs. Silenor Dosage
Quviviq
Silenor
| 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 |
| 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
| 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
| 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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