Plant origin drugs play very important role in the prevention and treatment of diseases and it becomes popular day by day due to its low cost and less side effect. Unani medicine is an oldest system of traditional medicines, in which 80% plant origin drugs are used. Gulnar (flower of Punica granatum Linn) is very important drug which has been used in Unani medicine since centuries for its great medicinal values. In the last few decades, many works have been done on the phytochemistry and biological activities of the drug. This review describes about the Unani literature of the drug, like temperament, action, uses, formulations and dose of the drug followed by modern description like taxonomic classification, macroscopic and microscopic features, phytochemical studies, chemical constituent and pharmacological action of the drug and its medicinal uses.