Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Hydroxyzine (Vistaril) and clonazepam (Klonopin) are both medications that treat anxiety. Hydroxyzine is an antihistamine that can also treat allergy-related symptoms. It's typically only used for short-term anxiety treatment and isn't usually a first-choice treatment option. Clonazepam is a benzodiazepine that's also used to treat seizures. It works by increasing the levels of a chemical called GABA, which helps calm the mind and body. Clonazepam is a controlled substance due to its risk of dependence and misuse. Both medications can cause drowsiness and should not be mixed with alcohol.
Hydroxyzine pamoate (Vistaril)
Clonazepam (Klonopin)
Hydroxyzine pamoate (Vistaril)
Clonazepam (Klonopin)
Summary of Vistaril vs. Klonopin
Summary for Antihistamine
Prescription only
Hydroxyzine pamoate (Vistaril) is a prescription antihistamine. It's taken by adults and children to treat anxiety and to ease itching from allergies. It's also used as a sleep aid (sedative) before and after general anesthesia. Hydroxyzine pamoate (Vistaril) comes as a capsule that's taken by mouth up to 4 times daily. Some common side effects of this medication include sleepiness, dry mouth, and headache. It's best to avoid drinking alcohol while taking hydroxyzine pamoate (Vistaril) because doing so can worsen drowsiness.
Summary for Benzodiazepine
Prescription only
Clonazepam (Klonopin) is a benzodiazepine. It's approved to treat seizures in adults and children, and panic disorder in adults only. Clonazepam (Klonopin) is taken by mouth, typically two or three times a day. It's also available as orally disintegrating tablets (ODTs) for people who have trouble swallowing. Some common side effects of this medication include drowsiness, dizziness, and poor movement control. Before stopping clonazepam (Klonopin), speak with your prescriber to come up with a plan to lower your dose slowly over time to avoid withdrawal symptoms.