|Pharmacology which is the branch of medicine and biology deals with the study of drug action in which neuropharmacology is a sub branch which deals with study of how drugs affect cellular function in the nervous system, and the neural mechanisms through which they influence behavior. The open access journals are peer reviewed scholarly journals. The 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.