Zyrtec: FREE 5-Day Sample ($7 Value) This post may contain affiliate links. Please see the full disclosure policy here. Posted on May 20, 2011 Written by Mary Leave a Comment The FREE Zyrtec offer is STILL AVAILABLE! Head over and grab your FREE Zyrtec Sample now! They will mail you a coupon for a FREE 5day sample ($7 value) . to get the FREE offer i chose “yes” and “Allegra” on the 2 questions on the landing page.