Is the rumor true that there are derivatives from pig intestines in "Pepsi" and what is the ruling on drinking it and similar carbonated drinks?

The fundamental principle regarding foods and drinks is permissibility. Carbonated beverages like Pepsi and Coca-Cola are permissible, even if they contain alcohol or "pepsin" derived from pork, as long as these substances have undergone transformation (chemical change) or consumption (integrated into the original substance such that their properties are eliminated) and no longer cause intoxication or definite harm. This is because the ruling is based on the predominant element, and the change of a prohibited substance into a new substance alters its legal ruling.