Antihistamine: A medication that blocks the action of histamine in the body. Typical uses of Histamine subtype 1 blockers (H1 Blockers) include stopping or decreasing allergic reactions such as hives, allergic rhinitis, and/or eczema, decreasing nausea and dizziness associated with motion sickness or chemotherapy drugs, and helping with sleep problems. Non-sedating antihistamines are relatively new and are used for daytime allergy sufferers. Typical uses for histamine subtype 2 blockers (H2 Blockers) which block acid effects include stomach ulcers, heartburn and GERD.


   •   •   •


  1. Source: RDCRN (NCATS/NIH): cms/ cegir/ Learn-More/ Glossary

   •   •   •

Note: This site is for informational purposes only and is not medical advice. See your doctor or other qualified medical professional for all your medical needs.