A drug delivery system is a system that delivers drugs to drug targets, which can regulate the pharmacokinetics, efficacy, toxicity, immunogenicity, and other aspects of drugs Drug delivery systems can usually improve the stability of drugs; Reduce drug degradation; Reduce the toxic side effects of drugs; Improve the bioavailability of drugs; Maintain stable and effective blood drug concentrations; Avoiding fluctuations in blood drug concentration can also increase the drug concentration in the target area.
An ideal drug delivery system should have characteristics such as high drug loading, low drug leakage during transportation, effective targeting of the lesion site, and controllable drug release Drug delivery systems have become a research hotspot in the pharmaceutical field in recent years, and are expected to provide new ideas for precise treatment of various major diseases. Common drug delivery systems are classified as follows: peptide technology, liposome technology, microsphere technology, lipid nanoparticle technology, dendritic nanoparticle technology, microneedle technology, albumin nanoparticle technology, nanocrystalline technology, ferritin technology, fat emulsion technology, oral film technology, and micelle technology. Liposomes (mainly composed of phospholipids) have received more attention than other systems due to their significant properties of delivering drugs to the target site
