Recent Advances in Nanocapsule: Types, Preparation Methods and Characterizatio

Nanocapsules are submicroscopic colloidal drug carrier systems consist of a liquid/solid core in which the drug, gene, protein, and other substances are incorporated into the interior cavity that is surrounded by a distinctive polymeric membrane. Polymers like collagen, albumin, and gelatin are mainly using polymers in nanocapsule formulations. Nanocapsules can serve as nano-sized drug carriers to achieve controlled release as well as efficient drug targeting. The process is used to improve the poor aqueous drug solubility, taste, stabilizing drugs by protecting the molecule from the environment, providing the desired pharmacokinetic profile, allowing controlled release, as well as facilitating oral administration. Capsules are generally prepared between the range of 100 and 1000 nm. Their release and degradation properties largely depend on the composition and the structure of the capsule walls. The dispersion stability of nanocapsules determined by the surfactant, nature of the outer coating. This review describes various facts of nanocapsule drug delivery systems in relation to the method of formulation, characterization, potential benefits and risks, and pharmaceutical applications in drug delivery.