Self-Nanoemulsifying Drug Delivery System: Liquid, Supersaturable, and Solid Dosage Forms

A third of recently created drugs have poor water solubility and absorption. Innovative methods, such as self-nanoemulsifying drug delivery systems (SNEDDS), are being developed to address issues with pharmaceutical delivery and bioavailability. These systems, which are referred to as isotropic mixtures, are made up of the drug, a suitable oil, a surfactant, and either a co-surfactant or co-solvent. These elements combine to create a "oil in water (O/W)" nanoemulsion after being lightly stirred. Colloidal systems, including microemulsions and nanoemulsions, are being used more commonly in food, cosmetics, and pharmaceutical preparations to encapsulate, protect, and transport lipophilic components. The nanoscale particles used in these kinds of delivery systems have a number of potential benefits, including enhanced long-term stability, enhanced solubility, enhanced optical transparency, and enhanced bioavailability. To create SNEDDS, one can utilize a phase diagram technique or a statistical design of trials. For SNEDDS, switching from a liquid to a solid dose form may have improved stability as well as increased patient compliance. The design and production of SNEDDS and their effects on the bioavailability of several medications are the subject of numerous studies that are included in this review.