I saw this deal on Hip2Save, tried it today and it worked!
This Bengay is on megasaver all month at Walgreens for $4.99. You can get a $5 coupon here by filling out their form. If your Wags doesn't adjust coupons down, you can always see if they'll ring the product up at $5.00 (that's what my store mgr decided to do). You can also get a $3 coupon from coupons.com on my right sidebar.