Oral and topical decongestants improve the nasal congestion associated with allergic rhinitis by acting on adrenergic receptors, which causes vasoconstriction in the nasal mucosa, resulting in decreased inflammation (congestion). The most commonly available decongestants contain phenylephrine, oxymetazoline (Afrin), and/or pseudoephedrine. Pseudoephedrine is an ingredient used in making methamphetamine (Illegal methamphetamine is a powerful, highly addictive street drug. Some state and local cities and towns restrict over the counter access to drugs that contain pseudoephedrine (Claritin, Sudafed).
Articles in this section
- What are the symptoms of allergic rhinitis?
- What is the cause of allergic rhinitis?
- What is allergic rhinitis?
- What are the two types of rhinitis?
- What are some of the common side effects observed with antihistamines?
- Can I drink alcohol when I take antihistamines?
- What are the treatments for allergic rhinitis?
- What are nasal corticosteroid sprays?
- How does nasal corticosteroid spray work?
- What are antihistamines?