Nanotubes (NTs), nanometer-scale hollow cylinders, are emerging as promising drug vehicles offering many
advantages over spherical particles. This paper briefly highlights the recent performance of NTs in drug delivery. This
discussion is by no means intended to be complete, an attempt is made to provide some illustrative examples on the basis
and application of the NT delivery systems. The NT systems discussed includes silica NTs, self-assembling lipid NTs and
polymer NTs as well as natural halloysite NT. Though it is still too early to establish NTs for clinical use, these novel carriers
are undoubtedly interesting and deserve further investigation.