alka-seltzer extra strength heartburn reliefchews - relief of heartburn, acid indigestion and sour stomach - assorted lemon, orange strawberry flavors - 60 count (pack of 2) alka-seltzer fast, fruit-flavored heartburn relief with no chalky taste. this is your go-to on the go-go kind of fast relief of heartburn, indigestion and upset stomach. reliefchews are easy to take with you and come in great-tasting (not chalky or gritty) assorted fruit flavor.