Sudafed

Sudafed (pseudoephedrine) is an alpha agonist used to treat nasal congestion and sinus pressure. It works by restricting the blood vessels in the nose and sinuses. Sudafed doesn't require a prescription, but there are restrictions on its purchase and it is only available at the pharmacy counter. Generic pseudoephedrine is available, and Sudafed PE is another over-the-counter alternative with a different active ingredient (phenylephrine) that has no restrictions.

Get Sudafed for as low as $26.59, which is 56% off the average retail price of $61.12 for the most common version, by using a GoodRx coupon.