Magnesium aluminium silicates

Disintegrating and wetting agents agar, alginic acid, bentonite, microcrystalline cellulose, gelatin, magnesium aluminium silicate, methylcellulose, sodium lauryl sulphate, starch, and starch derivatives. 

Magnesium aluminium silicate Up to 10 Veegum often slightly colored... 

Vermiculite consists of a hydrated magnesium aluminium silicate that under the application of heat (in the temperature range 450 - 1200°C), can expand up to 15 times its original volume by the loss of the water of hydration as steam. Rapid incorporation of the aditive into a deposit weakens the deposit by the expansion of the vermiculite thereby facilitating deposit removal by soot blowing (see Chapters 15 and 16). 

Bismuth subsalicylate reduces the absorption of tetracycline by 34% and reduces the maximum serum levels of doxycycline by 50%. ° It has been suggested the excipient Veegum (magnesium aluminium silicate) in some bismuth subsalicylate formulations enhances this effect." Bismuth carbonate similarly interacts with the tetracyclines in vitro... 

RTP, based in Winona, MN, USA, was probably the first independent compounder to go into commercial production with nanocompounds. Most nanocomposites currently use nanoclay, although carbon nanotubes are becoming much more widespread. In the US, Southern Clay Products of Texas is a leading producer of nanoclays with products like Cloisite w hich are high aspect ratio additives based on montmorillonite, consisting of layered magnesium aluminium silicate platelets that have been surface treated to improve their compatibility with the polymer. 

Inorganic (e.g., colloidal magnesium aluminium silicate, sodium magnesium silicate, and bentonite)... 

T. Pongjanyakul, Alginate-magnesium aluminium silicate films Importance of alginate block structures, Int J Pharm, 365 100-108, 2009. 

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