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Do not use any other dosing device. Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center right away.

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Your use of this information means that you agree to the Terms of Use. Learn how we develop our content. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated. Updated visitor guidelines. You are here Home » guaifenesin and pseudoephedrine. Top of the page. Congestac slide 2 of 8, Congestac,. What is the most important information I should know about guaifenesin and pseudoephedrine?

What is guaifenesin and pseudoephedrine? What should I discuss with my healthcare provider before taking guaifenesin and pseudoephedrine? You should not use guaifenesin and pseudoephedrine if you are allergic to it. How should I take guaifenesin and pseudoephedrine? Do not crush, chew, break, or open an extended-release tablet or capsule. Swallow it whole. What happens if I miss a dose? What happens if I overdose? Seek emergency medical attention or call the Poison Help line at What should I avoid while taking guaifenesin and pseudoephedrine?

Drinking alcohol with this medicine can cause side effects. What are the possible side effects of guaifenesin and pseudoephedrine? Stop using guaifenesin and pseudoephedrine and call your doctor at once if you have:.

What other drugs will affect guaifenesin and pseudoephedrine? Where can I get more information? Your pharmacist can provide more information about guaifenesin and pseudoephedrine.

Copyright Cerner Multum, Inc. Version: Guaifenesin and pseudoephedrine may also be used for purposes not listed in this medication guide. You should not use guaifenesin and pseudoephedrine if you are allergic to it. Do not use guaifenesin and pseudoephedrine if you have taken an MAO inhibitor in the past 14 days. A dangerous drug interaction could occur. MAO inhibitors include isocarboxazid, linezolid, phenelzine, rasagiline, selegiline, and tranylcypromine.

Ask a doctor or pharmacist if it is safe for you to take this medication if you have:. It is not known if this medication may be harmful to an unborn baby. Do not use this medicine without medical advice if you are pregnant.

Guaifenesin and pseudoephedrine may pass into breast milk and may harm a nursing baby. Decongestants may also slow breast milk production. Do not use this medicine without medical advice if you are breast-feeding a baby. Artificially sweetened liquid medicine may contain phenylalanine. Check the medication label if you have phenylketonuria PKU. Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. This medication may impair your thinking or reactions.

Be careful if you drive or do anything that requires you to be alert. Ask a doctor or pharmacist before using any other cough, cold, or allergy medicine. Guaifenesin and pseudoephedrine are contained in many combination medicines. Taking certain products together can cause you to get too much of a certain drug.