These are two common ingredients in nonprescription cold and allergy medicines, such as Sudafed and Sudafed ... between the two common OTC nasal decongestants phenylephrine and pseudoephedrine.

Decongestants come in oral tablets — like Sudafed or Mucinex — or nasal sprays like Afrin. A swollen, congested nose often accompanies a cold or allergies, which can make it hard to breathe or ...