It refers to the scientific discipline that  compares the value of one pharmaceutical drug or drug therapy to  another. The study evaluates the cost and effects of pharmaceutical  products. Main forms of economic evaluation are cost-effectiveness  analysis, cost-consequences analysis and cost-utility analysis.  
List of Related Journals
Pharmacoeconomics: Open Access Open Access,PharmacoEconomics   Expert Review of Pharmacoeconomics and Outcomes Research,   PharmacoEconomics - Italian Research Articles,  Pharmacoeconomics -  Spanish Research Articles,  PharmacoEconomics - German Research  Articles,  Open Pharmacoeconomics and Health Economics Journal.
Journal of Health & Medical Economics received 210 citations as per Google Scholar report