Amazon has the 3-Count 4.1-oz Crest Gum & Enamel Repair Advanced Whitening Toothpaste for $14.89 - $5 off (check “Save an extra” box, eligible on first S&S order for this product) - 5% off with Subscribe & Save (can cancel anytime) = $9.15 with free shipping on $25+ or with Prime.

Treats issues at the gum line to help reverse gum problems. Excellent Amazon reviews.