Pharma Excipients
Cellulose
A platform direct compression formulation for low dose sustained-release tablets enabled by a dual…
Content uniformity (CU) is a well-recognized challenge for low-dose direct compression (DC) tablet formulations. Using a dual particle engineering approach that involves a) forming a segregation-resistant drug-carrier composite to improve CU and b) nanocoating HPMC to enhance flowability, we have…
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Water-soluble and -insoluble polymers as binders for pellet preparation by extrusion/spheronization
The objective of this study was to investigate the effect of binder (water-soluble vs. -insoluble) and granulation fluid (aqueous vs. organic) on the physical properties of pellet prepared by extrusion/spheronization and on drug release. Size distribution, sphericity, bulk density, crushing force…
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Rheology of Cellulose Ether Excipients Designed for Hot Melt Extrusion
new family of cellulosic ether polymeric excipients has been recently engineered for fabrication of amorphous solid dispersions (ASDs) of active pharmaceutical ingredients (API) via hot-melt extrusion (HME). These hydroxypropyl methyl cellulose (HPMC) excipients enable plasticizer-free melt…
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Physical and rheological properties of xanthan gum agglomerated in fluidized bed: Effect of HPMC as…
Physical and rheological properties of agglomerated xanthan gum (XG), commonly used as a food thickener for the management of the patients with dysphagia (swallowing difficulty), were investigated at different concentrations (0, 2, 4, and 6% w/w) of hydroxypropyl methylcellulose (HPMC) as a binder…
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Impact of polymers on the aggregation of wet-milled itraconazole particles and their dissolution…
We explore the impact of various polymers and their molecular weight on the stabilization of wet-milled suspensions of itraconazole (ITZ), a poorly soluble drug, and its dissolution from spray-dried suspensions. To this end, ITZ suspensions with SSL, SL, and L grades of hydroxypropyl cellulose (HPC)…
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Use of Mannitol as a Filler in Wet Granulation
A study was conducted to evaluate mannitol as a filler along with microcrystalline cellulose (MCC) in wet granulated tablet formulation, in situations in which lactose cannot be included in the formulation because of chemical incompatibility with the active drug. A two-level full factorial design…
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Cellulose-Based Composite Hydrogels: Preparation, Structures, and Applications
In this chapter, cellulose-based composite hydrogels were summarized in three categories according to the components. Synthetic polymer/cellulose composite hydrogels combine the advantages of synthetic polymers and cellulose. Soluble cellulose derivatives are feasible to construct the composite…
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Effect of Binder Attributes on Granule Growth and Densification
The rate and extent of granule growth and densification during high-shear wet granulation (HSWG) depends on a variety of formulation and process variables, including material attributes of critical formulation excipients, such as binders. The effects of known binder attributes to the rate and extent…
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Orally disintegrating dosage forms
What is an orally disintegrating dosage form?
An orally disintegrating tablet is a novel formulation that dissolves in the saliva within a few seconds and without requiring of drinking additional water. This dosage form is a powerful way to deliver active drugs ingredients because it has many…
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Wet-granulation process: phenomenological analysis and process parameters optimization
Wet granulation is a size-enlargement process applied in many industrial fields, such as pharmaceutical, nutraceutical, zootecnichal, to improve flowability and compressibility properties of powders. In this work analysis of the particle size distribution (PSD) of granules was performed to…
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