I wouldn't worry about Tylenol, Aspirin, and such, since there is so little Carbs. TUMS [which can be used as a source of Calcium] OTOH should be limited. Regular Strength TUMS = 0.75g each, and EXTRA STRENGTH have about 1.5g each, mainly because the first ingredient is Sucrose [WHITE SUGAR.] I used to pop TUMS like Pez, because they tasted so good. It's basically: Sugar, Calcium Based Baking Soda Substitute, Cornstarch, Talc, Mineral Oil, Flavors, Dyes, etc...