Edit: I was mistaken and corrected below. While some medicines work as I described, Gas-X does not.
The reason you get extra gassy after eating certain foods, such as beans, is because the carbohydrates are complex and din’t get fully broken down. Once those remaining carbs make it to your intestines, the microbes there feast on them and produce methane as one of several byproducts. Gas-X and other products help break down the complex carbohydrates so that the microbes in your intestines have less to feast on, and therefore produce less methane.
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