Ambien vs. Hydroxyzine

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

Key Takeaways

  • Ambien is FDA-approved specifically for short-term insomnia, while hydroxyzine is approved for anxiety, itching, and sedation, with sleep use considered off-label.

  • Ambien is a Schedule IV controlled substance with a boxed warning for complex sleep behaviors, while hydroxyzine carries no abuse or dependence risk.

  • Ambien is taken once at bedtime, while hydroxyzine's FDA-approved anxiety dosing calls for up to four doses spread across the day.

Ambien vs. Hydroxyzine Drug Summary

Ambien

Ambien (zolpidem) is a non-benzodiazepine sedative-hypnotic that acts on GABA-A receptors in the brain. It is FDA-approved only for short-term insomnia involving trouble falling asleep, and it is taken as a single tablet once nightly on an empty stomach.

Hydroxyzine

Hydroxyzine is a first-generation antihistamine with sedating and anti-anxiety properties. It is FDA-approved for short-term anxiety, itching from allergic skin conditions, and sedation before or after procedures, and it is typically taken several times a day rather than once at night.

Ambien vs. Hydroxyzine Side Effects

Ambien

Most common
Drowsiness (up to 15%)
Dry mouth (up to 10%)
Dizziness (up to 23.5%)
Headache (up to 19%)

Hydroxyzine

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

Ambien vs. Hydroxyzine Dosage

Ambien

Dosage
Dosage Table
STAGE DOSE WHEN
Starting dose 5 mg once nightly At the start
Maximum dose 10 mg once nightly If needed
Dose changes 1 increase 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

Ambien vs. Hydroxyzine Indications

Ambien

Ambien is FDA-approved only for short-term treatment of insomnia involving difficulty falling asleep. It is meant to be used for a limited stretch of time, not as an ongoing nightly medication, and it is not approved for children.

  • Short-term insomnia (trouble falling asleep)

  • Immediate-release tablet taken once nightly

  • Not approved for long-term, chronic use

  • Not approved for pediatric patients

Hydroxyzine

Hydroxyzine is FDA-approved for short-term anxiety linked to psychoneurosis, itching from allergic skin conditions, and sedation before or after anesthesia. Doctors sometimes prescribe it for sleep because of its sedating effect, but that use is off-label and not on the FDA label.

  • Anxiety linked to psychoneurosis (short-term)

  • Itching from allergic skin conditions

  • Sedation before or after anesthesia

  • Off-label: sometimes used for sleep

Ambien vs. Hydroxyzine Pros and Cons

Ambien

Ambien is a controlled substance built specifically for sleep onset, with FDA approval only for short-term insomnia. It carries a boxed warning for rare but serious complex sleep behaviors and can become habit-forming with continued use.

Pros

  • FDA-approved specifically to treat insomnia

  • Only one dose needed at bedtime, works fast

  • Not linked to weight gain

  • Lower dry mouth risk than hydroxyzine

Cons

  • Schedule IV controlled substance, abuse potential

  • Boxed warning for sleepwalking, sleep-driving

  • Not approved for long-term nightly use

  • Dangerous with alcohol or other sedatives

Hydroxyzine

Hydroxyzine is not a controlled substance and carries no abuse potential, but it was never studied or approved specifically for insomnia. Its sedating effect is a side benefit of a drug built for anxiety and itching, and it is dosed several times a day rather than once.

Pros

  • Not a controlled substance, no withdrawal risk

  • Also relieves itching from allergic skin conditions

  • No boxed warning for sleep-related behaviors

  • Can be used longer for anxiety under supervision

Cons

  • Not FDA-approved for insomnia; sleep use is off-label

  • Needs multiple doses spread across the day

  • Higher rate of weight gain than Ambien

  • More trouble concentrating and dry mouth

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