en نانوتکنولوژی Nanotechnology Letter to Editor Letter to Editor With the progress of various sciences, the attention to the nano approach has increased in all fields. Traditional drug delivery methods, despite their use, cannot deliver the drug to the target tissue in a targeted manner. For this reason, the use of a larger amount of the drug causes more side effects [1]. The approach of nanotechnology in targeted drug delivery has received a lot of attention recently and the production of drugs based on nanotechnology worldwide shows its importance [2]. Pharmaceutical Nanotechnology, nanopharmaceutical 275 278 http://pbr.mazums.ac.ir/browse.php?a_code=A-10-369-3&slc_lang=en&sid=1 Fereshteh Ziaei Amiri fereshteh_ziaei@yahoo.com 100319475328460010708 0009-0009-9260-340X No Department of Pharmaceutics, School of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran. Mohammad Ali Ebrahimzadeh zadeh20@gmail.com 100319475328460010709 100319475328460010709 Yes Department of Medicinal Chemistry, Pharmaceutical Sciences Research Center, School of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran.