Digestion is basically brought about by Enzymes, HCl, acid helps in killing bacteria :)
Most are lead/acid but there are other types.
Bee venom is acidic -- it contains formic acid -- but it is quite a complex substance (see the link below) The body's reaction to the sting is not caused so much by the acid, rather by two other substances, melitten and apamine.
er... vinegar i think
Hydrochloric acid
Indigestion tablets contain an alkali which neutralizes the acid in your stomach. In digestion in primarily caused by too much acidic in the stomach.
hydrochloric acid
The acid is so strong, it pretty much melts the food down.
Amino Acid! ;D
Digestion occurs with the aid of stomach acid. The remedy is thus alkali.
Acid is found in the stomach, because the acid helps in digestion.
Stomach acid
Indigestion can be CAUSED by poor digestion