Walgreens: FREE Biotene Gum January 16, 2011 This post may contain a link to an affiliate. See my disclosure policy for more information. Walgreens has Biotene gum on sale buy one at $1.99, get one 50% off. Combine that with a coupon and you have 2 packs of FREE Biotene gum! Buy 2 Packs of Biotene Gum (16 piece), $1.99 each: $3.98 Minus buy one get one 50% off sale: $2.98 for both Use 2 $1.50/1 coupons from the winter issue of the Diabetes and You magazine Final cost: 2 for FREE! Thanks, Wild for Wags!