<prompt> The aim of post-marketing study is:Efficacy of the drugDosage of the drugDeals with alteration of the drug includes absoion, distribution, binding storagerare adverse effects identification  <response>: post-marketing trial means phase IV trial Phase IV clinical trials are conducted to identify and evaluate the long-term effects of new drugs and treatments over a lengthy period for a greater number of patients Phase IV research takes place after the FDA approves the marketing of a new drug Pg.no.80 KD Tripathi Seventh edition 