18.Which of the following lubricant is not used in oral tablets
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Answer:Fluid Lubrication:
In fluid lubrication, a layer of fluid is located between and separates the moving surfaces of the solids from each other and thus reduces the friction. Fluid lubricants are seldom used in tablet formulations. However, liquid paraffin has been use Tablet lubricants are essential components of all tablet formulations, since they prevent sticking of the tablets in the dies. ... Lubricants are added to tablet formulations primarily to reduce friction between the die wall and granules as the tablet is formed and ejected (Sprowl, 1974; Lachman et al., 1970).d, such as in formulation for effervescent tablets.
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