Pharmaceutical Glaze is an
alcohol-based solution of various types of food-grade shellac. When used in
food and confections, it is also known as confectioner's glaze, resinous glaze,
pure food glaze, natural glaze, or confectioner's resin.
It’s a common ingredient in children's
medicines and even some children's frozen foods.
Pharmaceutical glaze is used by the
drug and nutritional supplement industry as a coating material for tablets and
capsules.
It serves to improve the product's
appearance, extend shelf life and protect it from moisture, as well as provide
a solid finishing film for pre-print coatings. It also serves to mask
unpleasant odors and aid in the swallowing of the tablet.
The shellac coating is insoluble in
stomach acid and may make the tablet difficult for the body to break down or
assimilate. For this reason, it can also be used as an ingredient in
time-released, sustained or delayed-action pills.
The product is listed on the U.S. Food
and Drug Administration's (FDA) inactive ingredient list.
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