Trazodone vs. Hydroxyzine

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

Key Takeaways

  • Trazodone is FDA-approved only for depression but is one of the most common off-label sleep aids, while hydroxyzine is FDA-approved for anxiety and itching but also used off-label for occasional sleeplessness.

  • Both drugs cause noticeable next-day drowsiness, so both carry warnings about driving or operating machinery until you know how you react.

  • Trazodone is usually taken once or in divided daily doses, while hydroxyzine's FDA-approved anxiety dosing calls for up to four doses a day.

Trazodone vs. Hydroxyzine Drug Summary

Trazodone

Trazodone is an atypical antidepressant called a serotonin antagonist and reuptake inhibitor, or SARI. It is FDA-approved for major depressive disorder in adults and is usually taken as a tablet in divided daily doses. Many doctors also prescribe a single, lower dose at bedtime off-label to help with sleep.

Hydroxyzine

Hydroxyzine is a first-generation antihistamine with sedating and anti-anxiety effects. It is FDA-approved for short-term anxiety and tension, for itching from allergic skin conditions, and as a sedative around surgery, taken as a tablet or capsule up to four times a day. Some clinicians also use it off-label for occasional trouble sleeping.

Trazodone vs. Hydroxyzine Side Effects

Trazodone

Most common
Drowsiness (up to 41%)
Dry mouth (up to 30%)
Dizziness (up to 28%)
Headache (up to 20%)

Hydroxyzine

Most common
Drowsiness (up to 28%)
Dry mouth (up to 14%)
Weight gain (up to 12%)
Trouble concentrating (up to 9%)

Trazodone vs. Hydroxyzine Dosage

Trazodone

Dosage
Dosage Table
STAGE DOSE WHEN
Starting dose 150 mg/day divided doses At the start
Maximum dose Up to 400 mg/day max If needed
Dose changes 3 increases As tolerated

Hydroxyzine

Dosage
Dosage Table
STAGE DOSE WHEN
Starting dose 50-100 mg At the start
Maximum dose 50-100 mg Same as starting
Dose changes None Fixed dose

Trazodone vs. Hydroxyzine Indications

Trazodone

Trazodone's only FDA-approved use is treating major depressive disorder in adults. Despite that narrow approval, it's one of the most frequently prescribed medications for insomnia, used off-label at doses far lower than what treats depression. Because it isn't approved for sleep, there's no FDA-reviewed dosing standard for that use.

  • Major depressive disorder (FDA-approved)

  • Off-label for insomnia at lower doses

  • Off-label for antidepressant-related sleep issues

  • Off-label for anxiety in some cases

Hydroxyzine

Hydroxyzine is FDA-approved for short-term anxiety and tension, for itching linked to allergic skin conditions, and as a sedative before or after anesthesia. It is sometimes used off-label for occasional sleeplessness because of its antihistamine sedating effect. Its anxiety approval doesn't extend beyond four months of continuous use, per the label.

  • Anxiety and tension (FDA-approved)

  • Itching from allergic skin conditions (FDA-approved)

  • Sedation before or after anesthesia (FDA-approved)

  • Off-label for occasional insomnia

Trazodone vs. Hydroxyzine Pros and Cons

Trazodone

Trazodone belongs to an older, well-established antidepressant class and is available as a low-cost generic. It is not a controlled substance, so it carries no risk of physical dependence the way benzodiazepine sleep aids can. Insurance almost always covers it for depression, and many plans also cover it for sleep despite the off-label status.

Pros

  • Not a controlled substance, minimal abuse potential

  • Inexpensive generic available in several tablet strengths

  • Can treat both depression and insomnia at once if both are present

  • Decades of real-world use as an off-label sleep aid

Cons

  • Carries a boxed warning about suicidal thoughts in young people, like all antidepressants

  • Rare risk of priapism, a serious side effect specific to trazodone

  • Can cause orthostatic hypotension, especially in older adults

  • No FDA-reviewed dosing guidance exists for its off-label sleep use

Hydroxyzine

Hydroxyzine is an older-generation antihistamine that has been used for decades for anxiety and itching. It is not a controlled substance either, and generic versions are widely available. Coverage for its FDA-approved uses is generally straightforward, though insurers may push back if it is prescribed specifically for sleep.

Pros

  • FDA-approved specifically for anxiety, not just an off-label sedative

  • Fast onset, effects usually felt within 15 to 30 minutes

  • No boxed warning and no known risk of priapism

  • Also treats itching from allergic skin reactions if that overlaps with sleep trouble

Cons

  • Strong anticholinergic effects like dry mouth and constipation, especially in older adults

  • Label states long-term use beyond four months for anxiety hasn't been studied

  • FDA-approved anxiety dosing requires up to four doses a day, less convenient than a single nightly dose

  • Can raise QT prolongation risk when combined with certain other medications

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