Print this Robitussin Product $2/1 coupon quickly, before it disappears.  My local Walmart has the Robitussin To Go Trial Size for $1.00, so FREE after coupon! Walmart’s coupon policy states if the coupon value is larger than the price of the item, you will either receive cash back or the difference will be applied to your  purchase!   Remember, you can print each coupon twice.