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Drug Interactions between Entereg and Marcof Expectorant

This report displays the potential drug interactions for the following 2 drugs:

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Interactions between your drugs

Major

HYDROcodone alvimopan

Applies to: Marcof Expectorant (hydrocodone / potassium guaiacolsulfonate) and Entereg (alvimopan)

CONTRAINDICATED: Recent exposure to opioids can increase the sensitivity to mu opioid receptor antagonists.

MANAGEMENT: The use of alvimopan is contraindicated in patients who have received therapeutic doses of opioids for more than 7 consecutive days immediately prior to alvimopan administration. Caution is advised in patients who have received more than 3 doses of an opioid within the week prior to surgery, as these patients were not studied in the postoperative ileus clinical trials. Patients with recent exposure to opioids should be monitored for increased adverse effects such as abdominal pain, nausea and vomiting, and diarrhea.

References

  1. "Product Information. Entereg (alvimopan)." GlaxoSmithKline (2008):

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Drug and food interactions

Major

HYDROcodone food

Applies to: Marcof Expectorant (hydrocodone / potassium guaiacolsulfonate)

GENERALLY AVOID: Alcohol may potentiate the central nervous system (CNS) depressant effects of opioid analgesics including hydrocodone. Concomitant use may result in additive CNS depression and impairment of judgment, thinking, and psychomotor skills. In more severe cases, hypotension, respiratory depression, profound sedation, coma, or even death may occur.

GENERALLY AVOID: Consumption of alcohol while taking some sustained-release formulations of hydrocodone may cause rapid release of the drug, resulting in high systemic levels of hydrocodone that may be potentially lethal. Alcohol apparently can disrupt the release mechanism of some sustained-release formulations. In study subjects, the rate of absorption of hydrocodone from an extended-release formulation was found to be affected by coadministration with 40% alcohol in the fasted state, as demonstrated by an average 2.4-fold (up to 3.9-fold in one subject) increase in hydrocodone peak plasma concentration and a decrease in the time to peak concentration. Alcohol also increased the extent of absorption by an average of 1.2-fold (up to 1.7-fold in one subject).

GENERALLY AVOID: Grapefruit juice may increase the plasma concentrations of hydrocodone. The proposed mechanism is inhibition of CYP450 3A4-mediated metabolism of hydrocodone by certain compounds present in grapefruit. Increased hydrocodone concentrations could conceivably increase or prolong adverse drug effects and may cause potentially fatal respiratory depression.

MANAGEMENT: Patients taking sustained-release formulations of hydrocodone should not consume alcohol or use medications that contain alcohol. In general, potent narcotics such as hydrocodone should not be combined with alcohol. Patients should also avoid consumption of grapefruit or grapefruit juice during treatment with hydrocodone.

References

  1. "Product Information. Zohydro ER (hydrocodone)." Zogenix, Inc (2013):

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Minor

alvimopan food

Applies to: Entereg (alvimopan)

Coadministration with a high-fat meal may decrease the rate and extent of alvimopan absorption. According to the product labeling, alvimopan peak plasma concentration (Cmax) and systemic exposure (AUC) were decreased by approximately 38% and 21%, respectively, and the time to reach peak plasma concentration (Tmax) was prolonged by approximately 1 hour when taken with a high-fat meal. The clinical significance is unknown. In postoperative ileus clinical trials, the preoperative dose of alvimopan was administered in a fasting state, and subsequent doses were given without regard to meals.

References

  1. "Product Information. Entereg (alvimopan)." GlaxoSmithKline (2008):

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Therapeutic duplication warnings

No warnings were found for your selected drugs.

Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.

See also

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Drug Interaction Classification

These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication.
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.
Unknown No interaction information available.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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