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Drug Interactions between alvimopan and dihydrocodeine / guaifenesin

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

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Interactions between your drugs

Major

dihydrocodeine alvimopan

Applies to: dihydrocodeine / guaifenesin and 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)
  1. (2008) "Product Information. Entereg (alvimopan)." GlaxoSmithKline

Drug and food interactions

Minor

alvimopan food

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

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.

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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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