Two-way Temperature Converter. To use this Converter type your value in a box and then click your mouse anywhere on the page (or press tab key).
The extra gas in carbonated water creates more pressure in your stomach, increasing the chances that your stomach will regurgitate contents upward. Some carbonated waters also include natural flavorings, such as lemon or lime, which can increase acidic content, making the heartburn worse.
Common side effects of Alka-Seltzer: 1  Conditions of Excess Stomach Acid SecretionLess Severe. 2  Feel Like Throwing UpLess Severe. 3  HeartburnLess Severe.  Irritation of the Stomach or IntestinesLess 1  Severe. Stomach CrampsLess Severe.  Throwing UpLess Severe.