Amazon.com offers Mucinex DM Expectorant/Cough Suppressant Extended-Release Bi-Layer Tablet 40-Count Box
for $9.49. Add it to your cart via Subscribe & Save to see it fall to $8.07
with free shipping
. That's $1 under our mention from two weeks ago and the lowest total price we could find. (For comparison, most local drug stores charge close to $20.) This box contains 40 bi-layer, gluten-free tablets that claim to relieve congestion and coughing.