Antihistamines are a class of drugs that block the effects of histamine, a chemical released in the body during an allergic reaction or immune response. Histamine causes blood vessels to become leaky and dilate, resulting in symptoms such as sneezing, itching, rashes, and sinus pressure or congestion. By blocking histamine receptors, antihistamines can provide relief from these uncomf... https://prachicmi.livepositively.com/antihistamine-drugs-industry-global-antihistamine-drugs-market-and-its-future-prospects/new=1