Abstract: Stable aqueous thixotropic compositions containing from about 16 to 24% by wt./vol. of magnesium hydroxide are obtained by using an anionic polymer, a stabilizing or thixotropy producing agent and a thinning or fluidizing agent in a specific order of addition.

Abstract: Provided is a method and lozenge composition which permits antacid and simethicone to be in intimate contact while still maintaining unimpaired defoaming activity of simethicone.

Abstract: A controlled antacid delivery form having an acid neutralizing component in a matrix including a gel-forming, swelling agent and a water insoluble lipid material. These materials are mixed with the antacid component, together with a large amount of sweet excipient, and compressed at high pressure to provide an antacid lozenge which dissolves very slowly in the mouth.A method for controlled antacid delivery wherein the controlled antacid delivery form is slowly dissolved in the mouth and neutralizes the stomach acid over a long period of time with surprising little antacid, while bathing the esophageal lining with antacid. When the controlled antacid delivery form includes a mixture of antacids having different reactivities towards acid, said method provides for substantially complete utilization of each component.