Could a teenager type 1 diabetic have tums (calcium carbonate)?

Contain sucrose: While the active ingredient is calcium carbonate, the primary inactive ingredient is sucrose (table sugar). One probably wouldn't throw your blood sugar totally out of whack, but if you ate a couple of them it certainly could have an effect. Would probably advise against them in your instance.

Tums (calcium carbonate): Yes there is no problem taking Tums (calcium carbonate)