When deciding which antacid works best, it is important to note that everyone has different likes and dislikes. Some may prefer liquid, some prefer chewable tablets, still others like the tiny pills you swallow with water or the soft chews. One science fair project put these antacids to the test, using ph testing strips to see which one neutralized the most acids. The winners were Mylanta and Rolaids (both in Extra Strength form). For more details on this project check out this website.