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Nuedexta (dextromethorphan / quinidine) Disease Interactions

There are 4 disease interactions with Nuedexta (dextromethorphan / quinidine):

Major

Antiarrhythmics (Includes Nuedexta) ↔ Cardiovascular Dysfunction

Severe Potential Hazard, Moderate plausibility

Applies to: Hypotension, Congestive Heart Failure

Antiarrhythmic agents can induce severe hypotension (particularly with IV administration) or induce or worsen congestive heart failure (CHF). Patients with primary cardiomyopathy or inadequately compensated CHF are at increased risk. Antiarrhythmic agents should be administered cautiously and dosage and/or frequency of administration modified in patients with hypotension or adequately compensated CHF. Alternative therapy should be considered unless these conditions are secondary to cardiac arrhythmia.

References

  1. Halkin H, Meffin P, Melmon KL, Rowland M "Influence of congestive heart failure on blood levels of lidocaine and its active monodeethylated metabolite." Clin Pharmacol Ther 17 (1975): 669-76
  2. Crouthamel WG "The effect of congestive heart failure on quinidine pharmacokinetics." Am Heart J 90 (1975): 335-9
  3. "Product Information. Cordarone (amiodarone)." Wyeth-Ayerst Laboratories, Philadelphia, PA.
View all 17 references
Major

Antiarrhythmics (Includes Nuedexta) ↔ Proarrhythmic Effects

Severe Potential Hazard, High plausibility

Applies to: Arrhythmias, Abnormal Electrocardiogram

Antiarrhythmic agents can induce or worsen ventricular arrhythmias. Ventricular tachycardia, ventricular fibrillation, and torsades de pointes have occurred in some patients. Patients with underlying cardiac dysfunction, bradycardia, hypokalemia, hypomagnesemia, or high antiarrhythmic serum concentrations are at increased risk for drug-induced arrhythmias. Therapy with antiarrhythmics should be used with extreme caution in patients with or predisposed to arrhythmias. Evidence of improved survival is lacking for use of antiarrhythmic therapy in asymptomatic, non-life-threatening arrhythmias. Therapy with antiarrhythmic agents should be reserved for patients with life-threatening arrhythmias.

References

  1. "Product Information. Tambocor (flecainide)." 3M Pharmaceuticals, St. Paul, MN.
  2. "Product Information. Adenocard (adenosine)." Fujisawa, Deerfield, IL.
  3. Andrivet P, Beaslay V, Canh VD "Torsades de pointe with flecainide-amiodarone therapy." Intensive Care Med 16 (1990): 342-3
View all 62 references
Moderate

Antiarrhythmics (Includes Nuedexta) ↔ Electrolyte Imbalance

Moderate Potential Hazard, High plausibility

Applies to: Hyperkalemia, Hypokalemia, Magnesium Imbalance

Electrolyte imbalance can alter the therapeutic effectiveness of antiarrhythmic agents. Hypokalemia and hypomagnesemia can reduce the effectiveness of antiarrhythmic agents. In some cases, these disorders can exaggerate the degree of QTc prolongation and increase the potential for torsades de pointes. Hyperkalemia can potentiate the toxic effects of antiarrhythmic agents. Electrolyte imbalance should be corrected prior to initiating antiarrhythmic therapy. Clinical monitoring of cardiac function and electrolyte concentrations is recommended.

References

  1. "Product Information. Tonocard (tocainide)." Merck & Co, Inc, West Point, PA.
  2. "Product Information. Norpace (disopyramide)." Searle, Skokie, IL.
  3. "Product Information. Quinidex (quinidine)." Wyeth-Ayerst Laboratories, Philadelphia, PA.
View all 13 references
Moderate

Antitussives (Includes Nuedexta) ↔ Psychiatric Conditions

Moderate Potential Hazard, Moderate plausibility

Applies to: Depression, Psychosis, Parkinsonism

Caution should be used when prescribing antitussives such as dextromethorphan and benzonatate in patients with psychiatric or emotional conditions. Isolated instances of bizarre behavior, including mental confusion and visual hallucinations have been reported in patients taking antitussives, specially when combined with other prescribed drugs such as monoamine oxidase inhibitors.

Nuedexta (dextromethorphan / quinidine) drug Interactions

There are 693 drug interactions with Nuedexta (dextromethorphan / quinidine)

Nuedexta (dextromethorphan / quinidine) alcohol/food Interactions

There are 2 alcohol/food interactions with Nuedexta (dextromethorphan / quinidine)

Drug Interaction Classification

The classifications below are a general guideline only. It is difficult to determine the relevance of a particular drug interaction to any individual given the large number of variables.

Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.

Do not stop taking any medications without consulting your healthcare provider.

Disclaimer: Every effort has been made to ensure that the information provided by Multum 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. Multum's 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 that the drug or combination is safe, effective, or appropriate for any given patient. Multum Information Services, Inc. does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. Copyright 2000-2016 Multum Information Services, Inc. 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 drugs you are taking, check with your doctor, nurse, or pharmacist.

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