allergic rhinitis
"Although an off-label use, I find this drug to be an excellent sleep aid. It is relatively short acting and may be appropriate for middle of the night awakenings. It is very important, however, to get your doctor's clearance before such use. There are some drugs that interact with chlorpheniramine. It is especially important not to combine chlorpheniramine or any similar drug, including drugs for motion sickness, such as Dramamine or Meclizine. Patients with eye pressure issues (glaucoma) should also either avoid and/or discuss with a doctor before using it."