Woman’s hand puts am alka seltzer tablet in a cup. A hand puts a tablet into a small clear glass and the tablet dissolves and fizzles. A hand puts a tablet into a paper cup. Two tablets are dropped into a clear glass cup. They dissolve and fizzle. A hand puts two tablets into a wine class. The camera zooms in on the glass and its fizzling contents and then fade cuts to an alka seltzer tablet.