Surface Solid Dispersion – A Review
DOI:
https://doi.org/10.37285/ijpsn.2013.6.1.1Abstract
Preparation of an effective formulation of poorly water-soluble drugs is a key challenge in pharmaceutical technology. Dissolution rate and solubility are the rate- limiting steps for increasing the bioavailability of poorly water‐soluble drugs. Solid dispersion is an efficient technique for improving dissolution rate and subsequently, the bioavailability of poorly water‐soluble drugs. Surface sSolid dDispersion is a novel technique of solid dispersion for dispersing one or more active ingredients on a water insoluble carrier of high surface area in order to achieve increased dissolution rates and bioavailability of insoluble drugs. The Vvarious polymers used in this technique are Avicel, Crosspovidone, sSodium starch glycolate, pPregelatinized starch, Cab-o-sil, Ac-di-sol, KyronT-314, Primojel and pPotato sStarch. This article reviews the various methods of preparation and characterization of surface solid dispersion and compiles some of the drugs formulated as surface solid dispersions. Some of the practical aspects to be considered for preparing surface solid dispersion are selection of a suitable carrier and method of preparation of surface solid dispersion.
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Keywords:
Bioavailabilty, Dissolution rate, Carrier, Solid Dispersion, Wettability
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References
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