Amazon has the 24-count TUMS Extra Strength Assorted Fruit Antacid Chewable Tablets (3 packs of 8 each) on sale for $2.68 - 35% off coupon (check "Save an extra" box, eligible on first S&S order for this product)  - 5% off with Subscribe & Save (can cancel anytime) = $1.61 with free shipping on $35+ or with Prime.  Good size to carry around.