What are the possible adverse effects of oral decongestants?

Updated: Sep 11, 2020
  • Author: Anne Meneghetti, MD; Chief Editor: Zab Mosenifar, MD, FACP, FCCP  more...
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Answer

Adverse effects of oral decongestants include the following:

  • Anxiousness

  • Insomnia

  • Tachycardia and dysrhythmias

  • Elevated blood pressure

  • Palpitations

  • Tremor

  • Urinary retention

Exercise caution in patients with heart disease, hypertension, prostate enlargement, glaucoma, anxiety, hyperthyroidism, or other medical conditions and in pregnant or lactating women. Unlike topical nasal decongestants, oral decongestants do not appear to cause rebound phenomena after cessation of use.


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