I am looking for medicine sold in your typical drugstores that deals with stomach acid related problem (gastritis), such as excessive gastric acid, bloating, stomach cramp, heartburn, nausea. Since such problems are quite common anywhere, I think it shouldn't be too difficult to get one in a Japanese drugstore and there must be one brand or a few of them that natives trust the most over the other. If there is any, the liquid type is preferable to me