Medication Guide App

Contac Cough Side Effects

Generic Name: dextromethorphan

Note: This document contains side effect information about dextromethorphan. Some of the dosage forms listed on this page may not apply to the brand name Contac Cough.

Some side effects of Contac Cough may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.

For the Consumer

Applies to dextromethorphan: oral capsule, oral capsule liquid filled, oral elixir, oral liquid, oral lozenge/troche, oral solution, oral suspension, oral suspension extended release, oral syrup, oral tablet

Along with its needed effects, dextromethorphan (the active ingredient contained in Contac Cough) may cause some unwanted effects. 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 dextromethorphan:

Symptoms of overdose
  • Blurred vision
  • confusion
  • difficulty in urination
  • drowsiness or dizziness
  • nausea or vomiting (severe)
  • shakiness and unsteady walk
  • slowed breathing
  • unusual excitement, nervousness, restlessness, or irritability (severe)

Some side effects of dextromethorphan may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Less common or rare
  • Confusion
  • constipation
  • dizziness (mild)
  • drowsiness (mild)
  • headache
  • nausea or vomiting
  • stomach pain

For Healthcare Professionals

Applies to dextromethorphan: compounding powder, oral capsule, oral disintegrating strip, oral drops, oral liquid, oral lozenge, oral solution, oral suspension extended release, oral syrup, oral tablet chewable

Nervous system

Nervous system side effects have included drowsiness and dizziness. Other side effects such as excitation, mental confusion, and opioid like respiratory depression have been rare and occurred at higher dosages. In some cases of abuse, patients experienced euphoria, hyperactivity, mania, and auditory and visual hallucinations.

Gastrointestinal

Gastrointestinal side effects have included stomach upset.

Hypersensitivity

Hypersensitivity side effects have included rare reports of fixed-drug eruptions.

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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