Expert Opinion on Drug Delivery From nanoemulsions to self-nanoemulsions, with recent advances in self-nanoemulsifying drug delivery systems (SNEDDS (original) (raw)
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ABSTRACT Introduction: Lipid-based drug delivery systems (LBDDS) are the most promising technique to formulate the poorly water soluble drugs. Nanotechnology strongly influences the therapeutic performance of hydrophobic drugs and has become an essential approach in drug delivery research. Self-nanoemulsifying drug delivery systems (SNEDDS) are a vital strategy that combines benefits of LBDDS and nanotechnology. SNEDDS are now preferred to improve the formulation of drugs with poor aqueous solubility. Areas covered: The review in its first part shortly describes the LBDDS, nanoemulsions and clarifies the ambiguity between nanoemulsions and microemulsions. In the second part, the review discusses SNEDDS and elaborates on the current developments and modifications in this area without discussing their associated preparation techniques and excipient properties. Expert opinion: SNEDDS have exhibit the potential to increase the bioavailability of poorly water soluble drugs. The stability of SNEDDS is further increased by solidification. Controlled release and supersaturation can be achieved, and are associated with increased patient compliance and improved drug loads, respectively. Presence of biodegradable ingredients and ease of large-scale manufacturing combined with a lot of 'drug-targeting opportunities' give SNEDDS a clear distinction and prominence over other solubility enhancement techniques.
Self Nano-Emulsifying Drug Delivery System: A Review
Journal of Advanced Scientific Research
Developments in recent drug discovery programs, yields a large proportion of novel pharmacologically active molecules that are lipophilic and poorly soluble, which is a major challenge for pharmaceutical researchers to enhance the oral bioavailability of such drug molecules. The self-nanoemulsifying drug delivery system (SNEDDS) is a promising Drug Delivery System which is well known for its prospective to improve the aqueous solubility and oral absorption of poorly water soluble drugs. SNEDDS is an isotropic mixture comprising oil, surfactant, co-surfactant and drug that form oil in water emulsion in aqueous environment under placid agitation. It can readily disperse in the aqueous environment of the gastrointestinal tract to form a fine oil-in-water emulsion with a droplet size not exceeding 100 nm under mild agitation for improving the oral bioavailability of poorly water-soluble drugs. The self nano-emulsifying Drug Delivery System (SNEDDS) is applicable on BCS Class II and Clas...
FORMULATION AND EVALUATION OF SELF-NANOEMULSIFYING DRUG DELIVERY SYSTEMS
It has become clear that self-nanoemulsifying drug delivery systems (SNEDDS) are a potential method for improving the solubility and bioavailability of medicines that are not highly watersoluble. Using Capmul MCM, Tween 80, Transcutol P, and olmesartan medoxomil as the oil, surfactant, co-surfactant, and medication, respectively, an optimal SNEDDS formulation was created in this work. The improved formulation's physicochemical characteristics, in vitro drug release profile, pharmacokinetic parameters, and acute and sub chronic toxicity were assessed. The findings revealed that the SNEDDS formulation had a high drug content of 95%, a zeta potential of-20 mV, and a particle size of 50 nm. The medication released consistently throughout a 12-hour period, according to the in vitro drug release profile. The pharmacokinetic analysis demonstrated that, in comparison to the pure medication, the SNEDDS formulation had a larger Cmax, AUC, and longer elimination half-life. According to tests on acute and subchronic toxicity, the formulation was well tolerated at low dosages while harmful effects were dose-dependent at higher concentrations. Overall, the findings showed that SNEDDS might be used as a drug delivery system to enhance the solubility, bioavailability, and pharmacokinetic characteristics of medicines that are poorly water-soluble.
Novel Approach Self-nanoemulsifying Drug Delivery System: A Review
Advances in Pharmacology and Pharmacy, 2023
The self-nanoemulsifying drug delivery system is solitarily the most frequent dosage form for administering drug molecules towards the target region in the pharmaceutical industry. It has gotten a lot of interest in the current scenario because of its budding applications in various industries. In the pharmaceutical business, self-nanoemulsifying drug delivery systems have been used to distribute medications via oral, topical, and parenteral routes. SNEDDS are submicron-sized emulsions being researched as drug carriers to improve therapeutic agent delivery. Due to their tiny droplets, elevated solubility ability, broad interfacial region, reduced consistency, transparent or semi-transparent emergence, & remarkable kinetic constancy, self-nanoemulsifying medicines are meant for an extensive choice of application. Through a combination of a water-insoluble lipid phase with a high-stress aqueous phase, these emulsions may be manufactured in huge quantities quickly. These are created using surfactants, co-surfactants, and co-solvents. In BCS class II and IV drugs, the self nano emu1sifying drug delivery system is useful in favor of increasing the water solubility of water-soluble pharmaceuticals. In this review, various aspects of the self-nanoemulsifying drug delivery system are highlighted, including method of preparation, characterization techniques such as particle size, zeta potential, polydispersity, drug content, advantages, disadvantages, and a particular importance on various applications of SNEDDS in different areas, such as cancer treatment, drug targeting, and as a vehicle for transdermal drug delivery.
Self-nano Emulsifying Drug Delivery System (SNEDDS): Future Aspects
International Journal of Technology, 2013
Oral route is the easiest and most convenient route for drug administration. more than 40% of new chemical entities exhibit poor aqueous solubility, resulting in unsatisfactory oral drug delivery. The major problem in oral drug formulation is low erratic bioavailability. This may lead to high inter and intra variability lack of dose proportionality and therapeutic failure. For improvement of bioavailability of drug is one of the greatest challenges in drug formulation. Various technological strategies are reported in literature including solid dispersions, cyclodextrines complex formation or micronization and different technologies of drug delivery system. SNEDDS may be a promising strategy to improve the rate and extent of oral absorption. SNEDDS are mixture of oil, surfactant, solvents and cosolvents / surfactants. The principle characteristic of these systems in their ability to form oil-in-water (o/w) emulsion or micro emulsion upon mild agitation following dilution by an aqueou...
International Journal of Applied Pharmaceutics
The most fundamental important extensive constitutive of drug molecules to be available for systemic absorption is aqueous solubility; subsequently, that is the nature of GIT fluid. When the drug molecules become solubilized, it has to reach the systemic circulation via the biological membrane. The solubility problem of many effective pharmaceutical molecules is still one of the major challenges in the formulation of this molecule. Drug molecules that belong to class II have a problem in bioavailability mainly due to low aqueous solubility and the rate-limiting step is the dissolution process and so electing of suitable drug delivery and proper additives are decisive to overcome this major obstruction and promote the fraction that will reach the systemic circulation. Among the different lipid-based systems, the su-SNEDDSs have gained attention because the inclusion of precipitation inhibitors within su-SNEDDSs helps maintain drug supersaturation after dispersion and digestion in the...
2017
Developments in recent drug discovery programs, yields a large proportion of novel pharmacologically active molecules that are lipophilic and poorly soluble ,which is a major challenge for pharmaceutical researchers to enhance the oral bioavailability of such drug molecules. Compared to conventional oral dosage forms, Self nanoemulsifying drug delivery systems (SNEDDS) possesses potential advantages like ease of manufacture and scale up, quick onset of action, reduction in drug dose, reduction in inter and intra subject variability and food effects and minimize problems associated with filling of liquid SNEDDS in capsules. Several recent works on Self nanoemulsifying drug delivery systems suggests the commercial suitability of the system in improving the solubility and bioavailability of such drugs. The physicochemical properties, drug solubilization capacity and physiological fate considerably helps in the selection of the SNEDD components. The composition of the SNEDDS can be optimized mainly with the help of phase diagrams, whereas statistical experimental design can be used for further optimization. The transition of liquid SNEDDS to solid SNEDDS has also been accomplished by researchers. Solidself nanoemulsifying drug delivery system focus on the incorporation of liquid/semisolid self nano emulsifying ingredient into solids by different solidification techniques like adsorption to solid carrier, spray drying, melt extrusion, nanoparticle technology and melt granulation. The present article gives more specification on spontaneous/rapid forming nanoemulsions or self nanoemulsifying systems for oral drug delivery by adsorption technique and gives complete information about formulation, method of preparation, characterization and application in solid dosage form of self nanoemulsifying drug delivery system.
International Journal of Applied Pharmaceutics, 2022
The most fundamental important extensive constitutive of drug molecules to be available for systemic absorption is aqueous solubility; subsequently, that is the nature of GIT fluid. When the drug molecules become solubilized, it has to reach the systemic circulation via the biological membrane. The solubility problem of many effective pharmaceutical molecules is still one of the major challenges in the formulation of this molecule. Drug molecules that belong to class II have a problem in bioavailability mainly due to low aqueous solubility and the rate-limiting step is the dissolution process and so electing of suitable drug delivery and proper additives are decisive to overcome this major obstruction and promote the fraction that will reach the systemic circulation. Among the different lipid-based systems, the su-SNEDDSs have gained attention because the inclusion of precipitation inhibitors within su-SNEDDSs helps maintain drug supersaturation after dispersion and digestion in the gastrointestinal tract. This enhances the bioavailability of drugs and minimizes the variability of exposure. Nowadays, supersaturable self-nano emulsifying and nano lipid-based drug delivery systems have constrained a substantial concern from pharmaceutical scientists for managing the oral delivery of poorly water-soluble compounds. By following oral administration, self-nano emulsifying drug delivery systems show complex aqueous dispersion and digestion in the GIT and enduring intestinal lymphatic transport, exorbitant pre-absorptive metabolism by gut membrane-bound cytochrome enzymes and preventing P-gp mediated drug efflux. Mostly these processes result in drug supersaturation, which leads to increased absorption or the high drug concentrations may cause precipitation with capricious and variable oral bioavailability. This procession review briefly summarized drug supersaturation obtained from self-nano emulsifying and other lipid-based formulations and this review also delineate the effects of numerous physiological factors and the probable interactions between PIs and lipid, lipase or lipid digested products on the in vivo performance of su-SNEDDS and focuses on reviewing the application of su-SNEDDS in enhancing the solubility and bioavailability of anti-cancer drugs in cancer therapy.
Pharmaceutical Sciences Asia, 2020
Nanotechnology is strongly accepted as the crucial approach in drug delivery that can influence the therapeutic performance of hydrophobic drugs. Self-nanoemulsifying drug delivery systems (SNEDDS) are one of the proven methods that can increase solubility and bioavailability of poorly water soluble drugs. SNEDDS are anhydrous homogenous liquid mixtures consisting of oil, surfactant, co-surfactant, and drugs, which spontaneously form o/w nanoemulsions when diluted with water under gentle agitation. SNEDDS provide several potential effects on oral drug delivery. This article presents an overview of SNEDDS along with their basics; such as, composition, preparation, characterization, potential effects associated with oral delivery, applications, commercially available products, advanced technology associated with SNEDDS, and trending.
Dosage Forms [Working Title]
Currently lipid-based formulations are playing a vital and promising role in improving the oral bioavailability of poorly water-soluble drugs. Lipid based formulations mainly consist of a drug dissolved in lipids such as triglycerides, glycerides, oils and surface active agent. Self nanoemulsifying formulations (SNEF) are isotropic mixtures of lipids/oils, surfactants and co-surfactants. On mild agitation followed by dilution in aqueous media, such as GI fluids, SNEF can form fine oil-in-water (o/w) nanoemulsions. Present chapter summarizes different types of lipid formulations with special emphasis on SNEF, availability of dosage forms, different components with natural surfactants from medicinal plants, mechanism of SNEF, recent advancements in oral drug delivery, solid SNEDDS, patents on SNEF and future prospects. SNEF emerging as powerful technique to improve solubility and commercialization of solid SNEF is the future novel drug delivery to improve bioavailability of poorly wat...