Common mistakes in medicating babies with yeast tablets for indigestion Yeast tablets are dried bodies of alewine fermentation bacteria, containing a variety of B vitamins, whose pharmacological effects are basically similar to those of vitamin B complex, and are often used as an adjunctive treatment for B vitamin deficiency, but have little effect on indigestion. But why do some parents determine that yeast tablets can help digestion? It may have to do with yeast whipped dough. In fact, the yeast used in yeast flour is live enzyme bacteria, while the yeast in yeast tablets is dead and has no fermentation effect. Even if there is a weak fermentation effect, it can only make the starch in the stomach produce gas and acid, which causes belching and does not help digestion, so it is not advisable to take yeast tablets to treat indigestion in babies.