Nuedexta Side Effects

Generic name: dextromethorphan / quinidine

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

Some side effects of Nuedexta 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 / quinidine: oral capsule

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

Stop using dextromethorphan and quinidine and call your doctor at once if you have a serious side effect such as:

• severe dizziness, fainting, fast or pounding heartbeat;

• easy bruising, unusual bleeding (nose, mouth, vagina, or rectum), purple or red pinpoint spots under your skin;

• pain or burning when you urinate;

• fever, chills, flu symptoms, nausea, vomiting, feeling light-headed;

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

• agitation, hallucinations, fever, fast heart rate, overactive reflexes, nausea, vomiting, diarrhea, loss of coordination, fainting; or

• joint pain or swelling with fever, swollen glands, muscle aches, nausea, vomiting, chest pain, unusual thoughts or behavior, and/or seizure (convulsions).

Less serious side effects of dextromethorphan / quinidine may include:

• diarrhea, gas, mild stomach pain;

• muscle spasm;

• dizziness, weakness;

• cough; or

• swelling in your hands or feet.

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

For Healthcare Professionals

Applies to dextromethorphan / quinidine: oral capsule

Nervous system

Nervous system side effects have included drowsiness, dizziness, asthenia, nervousness, and restlessness.

Gastrointestinal

Gastrointestinal side effects have included diarrhea, vomiting, flatulence, and abdominal pain.

Musculoskeletal

Musculoskeletal side effects have included muscle spasticity and muscle spasms.

Respiratory

Respiratory side effects have included cough and respiratory failure.

Genitourinary

Genitourinary side effects have included urinary tract infection.

General

General side effects have included influenza and increased gamma-glutamyltransferase.

Cardiovascular

Cardiovascular side effects have included peripheral edema.

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