Equation for the reaction antacid tablet?

I was wondering how to write a Word equation of the reactions that occurred between the acid and the respective active ingredients of each of the different antacid powders.

i used t he following acntacids;

Gastrogel-Magnesium Hydroxide, Aluminium Hydroxide

Sandocal-Calcium Carbonate, Calcium Lactate, Gluconate

Rennie-Calcium Carbonate, Magnesium Carbonate

Mylanta Double-Magnesium Hydroxide, Aluminium Hydroxide

Mylanta-Magnesium Hydroxide, Aluminium Hydroxide

Dewitt's-Calcium Carbonate, Magnesium Carbonate Sodium Bicarbonate Magnesium Hydroxide