Hydroxyzine is not available over the counter. It is a prescription-only medication in the United States, classified under the FDA’s Prescription Drug Product List in both of its forms: hydroxyzine hydrochloride (tablets) and hydroxyzine pamoate (capsules). You cannot buy it at a pharmacy without a prescription from a licensed provider.
What Hydroxyzine Is Used For
Hydroxyzine is a first-generation antihistamine, meaning it belongs to the older class of allergy medications that also cause significant drowsiness. It blocks histamine in the body, which helps relieve itching from allergic reactions like hives and contact rashes. But unlike most antihistamines you’d find on a drugstore shelf, hydroxyzine also has a calming effect on the central nervous system, so it’s frequently prescribed for anxiety as well.
These two uses come with different dosing. For itching from allergic conditions, the typical adult dose is 25 mg taken three or four times a day. For anxiety, the dose is higher, ranging from 50 to 100 mg four times daily. Children receive lower amounts based on age. Because the dosing varies so much depending on the condition being treated, a provider needs to determine the right amount for each person.
Why It Requires a Prescription
Several safety concerns keep hydroxyzine behind the pharmacy counter. The most serious is its effect on heart rhythm. Hydroxyzine can cause a condition called QT prolongation, where the heart’s electrical cycle takes longer than normal to reset between beats. This raises the risk of irregular heartbeat, fainting, and in rare cases, sudden cardiac events. People with existing heart disease, heart failure, a slow or irregular heartbeat, or a family history of heart rhythm problems face higher risk and may need to avoid the drug entirely.
Hydroxyzine also causes heavy sedation compared to newer antihistamines. Drowsiness, confusion, dizziness, and dry mouth are common. In older adults, these effects are more pronounced and potentially dangerous, which is why geriatric guidelines generally recommend against using it when safer alternatives exist. The sedation can also be severe enough in overdose to cause seizures and loss of consciousness.
Pregnancy is another concern. Hydroxyzine should not be taken during pregnancy due to potential harm to the developing fetus. Its safety during breastfeeding also hasn’t been established. These risks, taken together, are the reason the FDA keeps hydroxyzine prescription-only: it requires medical screening to use safely.
Common Side Effects
Most people who take hydroxyzine notice drowsiness first. It can be pronounced enough to interfere with driving or operating machinery, especially in the first few days. Dry mouth and headache are also frequently reported. Some people experience dizziness or, less commonly, trembling in the hands or feet.
More serious reactions are uncommon but worth knowing about. Chest tightness, difficulty swallowing, swelling around the face or throat, and a fast or irregular heartbeat all warrant immediate medical attention. Hallucinations (seeing or hearing things that aren’t there) have also been reported, though rarely.
OTC Antihistamines That Work Similarly
If you’re looking for over-the-counter relief from itching, hives, or allergy symptoms, several antihistamines are available without a prescription. They fall into two categories based on how much drowsiness they cause.
For a sedating option closest to hydroxyzine, diphenhydramine (the active ingredient in Benadryl) and chlorpheniramine are both available OTC. These are first-generation antihistamines that cause noticeable drowsiness, similar to hydroxyzine, and work well for itching and hives. They won’t address anxiety the way hydroxyzine does, but for allergic symptoms, they’re a reasonable substitute.
If you’d rather avoid sedation, newer antihistamines are a better choice:
- Cetirizine (Zyrtec) and levocetirizine (Xyzal) are effective for hives and allergy symptoms, though about 10% of people still experience some drowsiness with cetirizine.
- Loratadine (Claritin) and fexofenadine (Allegra) are the least sedating options, making them practical for daytime use.
None of these OTC options are prescribed for anxiety. If you’re specifically looking for hydroxyzine’s anti-anxiety effects, there’s no over-the-counter equivalent. That use requires a prescription and medical oversight to manage dosing and monitor for heart-related side effects.
How to Get a Prescription
Getting hydroxyzine typically involves a visit with a primary care provider, a dermatologist (for skin-related itching), or a psychiatrist (for anxiety). Many telehealth platforms also prescribe it after an online consultation, which can be faster if you already know this is the medication you need. Your provider will ask about your medical history, particularly any heart conditions, current medications, and whether you’re pregnant or breastfeeding, before writing a prescription. Generic hydroxyzine is widely available and generally inexpensive, even without insurance.