Hydroxyzine is used to treat itching caused by allergies. It is an antihistamine and works by blocking a certain natural substance (histamine) that your body makes during an allergic reaction. Hydroxyzine may also be used short-term to treat anxiety or to help you feel sleepy/relaxed before and after surgery.

Does hydroxyzine help with seasonal allergies?

Thus, hydroxyzine appeared to be well tolerated on a continuous daily basis and was effective in suppressing most of the symptoms of seasonal allergic rhinitis. Comparison of hydroxyzine with antihistamines more traditionally used for allergic rhinitis appears warranted.

How long does hydroxyzine take to work for allergies?

Hydroxyzine starts working very quickly. Most people will start to feel it kick in within 30 minutes and will feel its maximum effect at around 2 hours.