Pseudoephedrine? Pseudofed is a common misspelling of pseudoephedrine.
Sudafed® (pseudoephedrine hydrochloride) is a medication used to relieve nasal congestion due to allergies or the common cold. It can also be used for relieving sinus congestion and pressure. Different versions of the drug (which come in the form of extended-release tablets, immediate-release tablets, and a liquid) can be purchased without a prescription, but they are kept behind the pharmacy counter, and you must show identification to buy them.
(Click Pseudoephedrine for information on how pseudoephedrine works, to learn more about the effects of this medication, and to find out what side effects may occur. You can also click on the various links in the box to the right to access specific topics on pseudoephedrine.)