ITEMS

modern scholarly publishers in the finest tradition

Journals

	Search

Critical Reviews™ in Therapeutic Drug Carrier Systems

ISSN for PRINT: 0743-4863

Institutional price:	$1014.00
Issues per year:	6

Best Paper Award Selection - Editorial Board Site

2008, Volume25

123 pages

Issue price - $203.00

Solid Self-Nanoemulsifying Delivery Systems as a Platform Technology for Formulation of Poorly Soluble Drugs

Tripta Bansal
Department of Pharmaceutics, Faculty of Pharmacy, Jamia Hamdard (Hamdard University), Hamdard Nagar, New Delhi 110062, India

Gulam Mustafa
Department of Pharmaceutics, Faculty of Pharmacy, Jamia Hamdard (Hamdard University), Hamdard Nagar, New Delhi 110062, India

Zeenat I. Khan
Department of Pharmaceutics, Faculty of Pharmacy, Jamia Hamdard (Hamdard University), Hamdard Nagar, New Delhi 110062, India

Farhaan J. Ahmad
Department of Pharmaceutics, Faculty of Pharmacy, Jamia Hamdard (Hamdard University), Hamdard Nagar, New Delhi 110062, India

Roop K. Khar
Department of Pharmaceutics, Faculty of Pharmacy, Jamia Hamdard (Hamdard University), Hamdard Nagar, New Delhi 110062, India

Sushama Talegaonkar
Department of Pharmaceutics, Faculty of Pharmacy, Jamia Hamdard (Hamdard University), Hamdard Nagar, New Delhi 110062, India

ABSTRACT

New drug discovery programs produce molecules with poor physico-chemical properties, making delivery of these molecules at the right proportion into the body a big challenge to the formulation scientist. The various options available to overcome the hurdle include solvent precipitation, micronisation/nanonization using high-pressure homogenization or jet milling, salt formation, use of microspheres, solid dispersions, cogrinding, complexation, and many others. Self-nanoemulsifying systems (SNES) form one of the most popular and commercially viable approaches for delivery of poorly soluble drugs exhibiting dissolution rate limited absorption, especially those belonging to the Biopharmaceutics Classification System II/IV. SNES are essentially an isotropic blend of oils, surfactants, and/or cosolvents that emulsify spontaneously to produce oil in water nanoemulsion when introduced into aqueous phase under gentle agitation. Conventional SNES consist of liquid forms filled in hard or soft gelatin capsules, which are least preferred due to leaching and leakage phenomenon, interaction with capsule shell components, handling difficulties, machinability, and stability problems. Solidification of these liquid systems to yield solid self-nanoemulsifying systems (SSNES) offer a possible solution to the mentioned complications, and that is why these systems have attracted wide attention. Other than the advantages and wide application of SSNEDS, the present paper focuses on formulation considerations, selection, and function of solidifying excipients; techniques of preparation; and case studies of drugs selected from different therapeutic categories. Developments in the techniques for in vitro evaluation of SSNEDS have also been discussed.