Decongestant: Nasal: Two inhalations in each nostril, not more frequently than every 2 hours.
(For additional information see "Propylhexedrine: Pediatric drug information")
Nasal congestion associated with allergic rhinitis, hay fever, or the common cold: Children ≥6 years and Adolescents: Intranasal: 2 inhalations in each nostril not more frequently than every 2 hours; duration of therapy: ≤3 days.
Refer to adult dosing.
Excipient information presented when available (limited, particularly for generics); consult specific product labeling.
Inhaler, nasal: 0.4-0.5 mg/inhalation (1s) [total content 250 mg]
No
For nasal inhalation only.
Intranasal: Spray into 1 nostril while gently occluding the other.
Topical nasal decongestant
The following adverse drug reactions and incidences are derived from product labeling unless otherwise specified. Frequency not defined.
Dermatologic: Burning sensation of the nose
Nervous system: Drug abuse (FDA Safety Alert 2021), stimulant misuse (FDA Safety Alert 2021)
Respiratory: Rhinorrhea, sneezing, stinging sensation of the nose
Hypersensitivity to propylhexedrine or any component of the formulation
Dosage form specific issues:
• Nasal: For nasal use only. Do not exceed recommended dosage; do not use for more than 3 days.
• Single-patient use: Inhaler should only be used by a single individual to prevent spread of infection.
Other warnings/precautions:
• Abuse potential: Misuse and abuse of propylhexedrine inhalers can lead to serious cardiac and psychiatric adverse events, including arrhythmias, tachycardia, myocardial infarction, hallucinations/delusions, and paranoia, which can lead to hospitalization, disability, or death (FDA 2021).
None known.
Note: Interacting drugs may not be individually listed below if they are part of a group interaction (eg, individual drugs within “CYP3A4 Inducers [Strong]” are NOT listed). For a complete list of drug interactions by individual drug name and detailed management recommendations, use the Lexicomp drug interactions program by clicking on the “Launch drug interactions program” link above.
Alpha1-Blockers: May diminish the vasoconstricting effect of Alpha1-Agonists. Similarly, Alpha1-Agonists may antagonize Alpha1-Blocker vasodilation. Risk C: Monitor therapy
Atomoxetine: May enhance the hypertensive effect of Sympathomimetics. Atomoxetine may enhance the tachycardic effect of Sympathomimetics. Risk C: Monitor therapy
Bromocriptine: May enhance the hypertensive effect of Alpha1-Agonists. Management: Consider alternatives to this combination when possible. If combined, monitor for hypertension and tachycardia, and do not coadminister these agents for more than 10 days. Risk D: Consider therapy modification
Cannabinoid-Containing Products: May enhance the tachycardic effect of Sympathomimetics. Risk C: Monitor therapy
Cocaine (Topical): May enhance the hypertensive effect of Sympathomimetics. Management: Consider alternatives to use of this combination when possible. Monitor closely for substantially increased blood pressure or heart rate and for any evidence of myocardial ischemia with concurrent use. Risk D: Consider therapy modification
Doxofylline: Sympathomimetics may enhance the adverse/toxic effect of Doxofylline. Risk C: Monitor therapy
Ergot Derivatives (Vasoconstrictive CYP3A4 Substrates): May enhance the vasoconstricting effect of Alpha1-Agonists. Risk X: Avoid combination
Esketamine: Decongestants (Nasally Administered) may diminish the therapeutic effect of Esketamine. Management: Patients who require a nasal decongestant on an esketamine dosing day should administer the nasal decongestant at least 1 hour before esketamine. Risk D: Consider therapy modification
FentaNYL: Decongestants may decrease the serum concentration of FentaNYL. Risk C: Monitor therapy
Guanethidine: May enhance the arrhythmogenic effect of Sympathomimetics. Guanethidine may enhance the hypertensive effect of Sympathomimetics. Risk C: Monitor therapy
Iobenguane Radiopharmaceutical Products: Alpha1-Agonists may diminish the therapeutic effect of Iobenguane Radiopharmaceutical Products. Management: Discontinue all drugs that may inhibit or interfere with catecholamine transport or uptake for at least 5 biological half-lives before iobenguane administration. Do not administer these drugs until at least 7 days after each iobenguane dose. Risk X: Avoid combination
Kratom: May enhance the adverse/toxic effect of Sympathomimetics. Risk X: Avoid combination
Linezolid: May enhance the hypertensive effect of Sympathomimetics. Management: Reduce initial doses of sympathomimetic agents, and closely monitor for enhanced pressor response, in patients receiving linezolid. Specific dose adjustment recommendations are not presently available. Risk D: Consider therapy modification
Lisuride: May enhance the hypertensive effect of Alpha1-Agonists. Risk X: Avoid combination
Monoamine Oxidase Inhibitors: May enhance the hypertensive effect of Alpha1-Agonists. While linezolid is expected to interact via this mechanism, management recommendations differ from other monoamine oxidase inhibitors. Refer to linezolid specific monographs for details. Risk X: Avoid combination
Ozanimod: May enhance the hypertensive effect of Sympathomimetics. Risk C: Monitor therapy
Pergolide: May enhance the hypertensive effect of Alpha1-Agonists. Risk C: Monitor therapy
Solriamfetol: Sympathomimetics may enhance the hypertensive effect of Solriamfetol. Sympathomimetics may enhance the tachycardic effect of Solriamfetol. Risk C: Monitor therapy
Sympathomimetics: May enhance the adverse/toxic effect of other Sympathomimetics. Risk C: Monitor therapy
Tedizolid: May enhance the hypertensive effect of Sympathomimetics. Tedizolid may enhance the tachycardic effect of Sympathomimetics. Risk C: Monitor therapy
Tricyclic Antidepressants: May enhance the therapeutic effect of Alpha1-Agonists. Tricyclic Antidepressants may diminish the therapeutic effect of Alpha1-Agonists. Risk C: Monitor therapy
