Free Allegra: Find your $7 Allegra coupon in the April 1st Smartsource circular to get the Allegra 5 ct. free at practically every store–my Kroger had it for less than $7, Walmart, Walgreens, Rite Aid, CVS have it at $7 or less too.
Free Advil Congestion: The March 25th RedPlum circular has a $2 coupon for Advil Congestion Relief, Cold & Sinus or Allergy Sinus product. It does not specify a size, so look for the 2 ct. package in the travel or trial size section of your store to get it free. My Kroger had it for $1.79 in the travel section.