Always ask a doctor before giving a cough or cold medicine to a child. elevated blood pressure, False-positives can occur far below the published threshold indicating that cross-reactivity in human specimens is sometimes greater than the limits reported.1. Dilated blood vessels can cause nasal congestion (stuffy nose). O 04. If you are taking the over-the-counter product to self-treat, read all directions on the product package before taking this medication. If you have any questions, ask your doctor or pharmacist. Select one or more newsletters to continue. A dangerous drug interaction could occur, leading to serious side effects. Skip the missed dose if it is almost time for your next scheduled dose. Although not all of these side effects may occur, if they do occur they may need medical attention.Check with your doctor as soon as possible if any of the following side effects occur while taking pseudoephedrine: The mixture of pseudoephedrine and MAO inhibitors can cause blood pressure to drop dangerously low. Adverse effects Common adverse drug reactions (ADRs) associated with pseudoephedrine therapy include central nervous system stimulation, insomnia, nervousness, excitability, dizziness and anxiety. If you do not have a dose measuring device, ask your pharmacist for one.Do not take pseudoephedrine for longer than 7 days in a row. Cerner Multum, Inc. "UK Summary of Product Characteristics." Breaking or opening the pill may cause too much of the drug to be released at one time. Do not use in larger or smaller amounts or for longer than recommended. MAO inhibitors, typically taken as anti-depressants, cause serious reactions in people who take pseudoephedrine. Available for Android and iOS devices.We comply with the HONcode standard for trustworthy health information - Pseudoephedrine has been used for self-medication in adults to prevent symptoms of otitic barotrauma (aerotitis [barotitis] media)† (e.g., otic discomfort, otic blockage, hearing loss, otalgia) associated with air travel or underwater diving.119 120 121 Efficacy not established in children.124 Pseudoephedrine may … Tell your doctor if you are pregnant or plan to become pregnant while using this medication. Pharmacotherapy (2012):Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.Some side effects may not be reported. Do not start a new medication without telling your doctor.Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use pseudoephedrine only for the indication prescribed.Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.Copyright 1996-2020 Cerner Multum, Inc. Cerner Multum, Inc. "Australian Product Information." If you have phenylketonuria (PKU), check the medication label to see if the product contains phenylalanine.Use pseudoephedrine exactly as directed on the label, or as prescribed by your doctor. If you are taking the medication regularly, take the missed dose as soon as you remember. These drugs are used extensively as nasal decongestants and are available in a variety of over-the-counter cold preparations; phenylpropanolamine is also available in over-the-counter diet aids. You may need to shake the oral suspension (liquid) well just before you measure a dose. Check the label to see if a medicine contains pseudoephedrine or a decongestant.Get emergency medical help if you have any of these signs of an allergic reaction to pseudoephedrine: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. 2. Pseudoephedrine effectively relieves nasal and sinus congestion and is found in several behind-the-counter combination cold and flu remedies.