Jamba Juice: New Buy 1 Get 1 FREE Coupon!April 12, 2010 by Mitchell Wischmann This post may contain a link to an affiliate. See my disclosure policy for more information. Jamba Juice just released another new coupon! Go here to print a coupon valid for a FREE drink when you purchase one (of equal or lesser value). This coupon is valid through 4/25.**Check Jamba Juice locations here.Thanks, Hip2Save!