Novel Drug Delivery System Using Microemulsion

A layer of surfactant molecules at the boundary stabilises microemulsions, which are homogeneous, transparent, and thermodynamically stable mixtures of two immiscible liquids, such as water and oil. Because of their potential uses in a variety of industries, such as fuel, cosmetics, and pharmaceuticals, they have been the subject of much research in recent decades. Depending on the temperature, oil-to-water ratio, and surfactant concentration, microemulsions are categorised as water-in-oil (W/O), oil-in-water (O/W), or bicontinuous. They have a number of benefits, including long shelf life, enhanced treatment efficacy, and natural stability. stability. However, they also have some disadvantages, including the requirement of a large amount of surfactant and co-surfactant, limited solubilizing capacity for high melting point substances, and potential phase separation. Microemulsions have been successfully applied in parenteral, oral, and ophthalmic drug delivery, as well as in cosmetics and fuel. Light scattering, electron microscopy, NMR spectroscopy, and cytotoxicity tests are some of the methods used to characterise them. They are made by phase titration or phase inversion techniques. A greater range of therapeutic applications can be achieved by using microemulsions, which are extremely adaptable pharmaceutical delivery systems that can overcome the majority of the drawbacks of traditional routes of administration. To fully realise their potential as multipurpose delivery carriers, more research is necessary.