Abstract
Nasal congestion leading to obstruction is one of the main symptoms in acute rhinosinusitis (common cold), other upper respiratory infections and allergic rhinitis. The EPOS 2020 guidelines place oral decongestants as an efficient therapy for the relief of nasal obstruction. In Romania, there are more than 50 available nasal decongestants, so it is very important for practitioners from all medical domains to be aware of recent data regarding their effectiveness and safety profile. Recent concerns raised by both the Food and Drug Administration (FDA) and the European Medicines Agency (EMA) regarding the efficacy and safety of pseudoephedrine (PSE) and phenylephrine (PHE) emphasize the need for informed decision-making in prescribing. Notably, there were concerns raised about the association between PSE, reversible cerebral vasoconstriction syndrome (RCVS) and posterior reversible encephalopathy syndrome (PRES). EMA’s safety committee, Pharmacovigilance Risk Assessment Committee (PRAC), recently recommended measures to minimize risks of serious side effects when using medicines containing PSE. PRAC recommends that medicines containing PSE should not be used in patients with severe or uncontrolled hypertension and severe acute or chronic kidney disease or failure. Additionally, PRAC recommends healthcare professionals to counsel patients to discontinue the use of such medicines promptly and seek medical assistance if they experience symptoms suggesting PRES or RCVS, such as sudden onset of severe headache, confusion, vomiting, visual disturbances or seizures. While effectiveness of oral PSE is confirmed by clinical studies, expert consensus is unfavorable to PHE. Both in vitro and in vivo clinical pharmacology data indicate that neither the recommended doses nor higher doses of oral PHE demonstrate efficacy in alleviating symptoms of nasal congestion.
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