There is a new coupon for $1/1 Alka Seltzer Antacid. There are no size restrictions on the coupon so you should be able to get a good deal on the smaller packs. I've seen the 12 count packs go on sale for $1.50 every so often so you can get them for $0.50 after coupon with the next sale! Print now to save later :)
The link above should take you directly to the coupon, but use zip code "60438" if you can't find it!
You can usually print 2 copies when you hit "back" and "refresh" or reload the link.