|Antidiuretic hormone or vasopressin is a hormone secreted by posterior pituitary gland to retain water in the body and to constrict blood vessels. It increases water reabsorption in the kidneys to help promote water retention and thereby regulates blood pressure.The top open access journals are peer reviewed scholarly journals of Journal of Autacoids & Hormones. The top open access journals are freely available on the public internet domain, allowing any end users to read, download, copy, distribute, prink, search or link to the full texts of the articles. These provide high quality, meticulously reviewed and rapid publication, to cater the insistent need of scientific community. These journals are indexed with all their citations noted. The top open access journals are indexed in MEDLINE, PUBMED, SCOPUS, COPERNICUS, CAS, EBSCO and ISI.