Drawback of excess of hydrogen carbonate taking as antacid is

Antacids

Sodium Hydrogen Carbonate

Antacids are

Why are metal hydroxides better alternative than sodium hydrogen carbonate in antacids ?

Why are metall hydroxides better alternative than sodium hydrogen carbonate in antacid ?

Antacids are commonly used for neuralizatlization of excess of acids. Why is sodium hydrogencarbonate, not good antacid ?

The source of hydrogen for carbon assimilation is

The source of hydrogen for carbon assimilation is