Vicks Nyquil Cough Side Effects

Generic Name: dextromethorphan / doxylamine

Note: This page contains side effects data for the generic drug dextromethorphan / doxylamine. It is possible that some of the dosage forms included below may not apply to the brand name Vicks Nyquil Cough.

It is possible that some side effects of Vicks Nyquil Cough may not have been reported. These can be reported to the FDA here. Always consult a healthcare professional for medical advice.

Applies to dextromethorphan / doxylamine: oral liquid

Get emergency medical help if you have any of these signs of an allergic reaction while taking dextromethorphan / doxylamine: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Stop using dextromethorphan and doxylamine and call your doctor at once if you have:

  • severe dizziness or anxiety, feeling like you might pass out;

  • little or no urinating; or

  • liver problems--nausea, upper stomach pain, itching, tired feeling, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes).

Common side effects may include:

  • drowsiness, dizziness;

  • nervousness;

  • sleep problems (insomnia); or

  • feeling restless or excited (especially in children).

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

Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate safety, effectiveness, or appropriateness for any given patient. Drugs.com does not assume any responsibility for any aspect of healthcare administered with the aid of materials provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the substances you are taking, check with your doctor, nurse, or pharmacist.

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