Astemizole is an antihistamine and anti-allergy medication used to treat hay fever and other allergy symptoms such as hives, runny nose, sneezing, and itchy eyes. It works by blocking histamine, a chemical released in the body during an allergic reaction. Astemizole is generally well tolerated, however side effects may include dry mouth, headache, drowsiness, nausea, and vomiting.
Astemizole was a second-generation antihistamine medication that was withdrawn from the market in 1999 due to the risk of serious side effects. It was once used to treat allergic rhinitis (hay fever) and allergic skin conditions, such as hives.
Astemizole worked by blocking the action of histamine, a substance released by the body during an allergic reaction. Histamine causes symptoms such as sneezing, runny nose, itchy eyes, and hives.
Astemizole was available in tablet form and was typically taken once a day. However, it was withdrawn from the market because it was found to increase the risk of a serious heart rhythm problem called QT prolongation. This condition can lead to sudden death.
If you are currently taking astemizole, you should talk to your doctor about switching to a different medication. There are many other safe and effective medications available to treat allergies.