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Drug Interactions between Romazicon and Versed

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

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Interactions between your drugs

Moderate

midazolam flumazenil

Applies to: Versed (midazolam) and Romazicon (flumazenil)

GENERALLY AVOID: The administration of flumazenil can result in convulsions in patients who have been receiving long-term treatment with benzodiazepines for epilepsy or sedation or who have recently received repeated doses of parenteral benzodiazepines. The mechanism is abrupt reversal of the benzodiazepine's anticonvulsive effects. In addition, withdrawal seizures may occur in patients who are physically dependent on benzodiazepines.

MANAGEMENT: The use of flumazenil is not recommended in patients with epilepsy who have been receiving long-term treatment with benzodiazepines. In addition, flumazenil is contraindicated in patients who have received a benzodiazepine to control potentially life-threatening conditions such as status epilepticus or increased intracranial pressure. Extreme caution, dose individualization, and close monitoring is recommended for other patients. Clinicians should be prepared to manage convulsions. Most seizures have been successfully managed with benzodiazepines, phenytoin, or barbiturates.

References

  1. "Product Information. Romazicon (flumazenil)." Roche Laboratories PROD (2001):

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Drug and food interactions

Moderate

midazolam food

Applies to: Versed (midazolam)

GENERALLY AVOID: The pharmacologic activity of oral midazolam, triazolam, and alprazolam may be increased if taken after drinking grapefruit juice. The proposed mechanism is CYP450 3A4 enzyme inhibition. In addition, acute alcohol ingestion may potentiate CNS depression and other CNS effects of many benzodiazepines. Tolerance may develop with chronic ethanol use. The mechanism may be decreased clearance of the benzodiazepines because of CYP450 hepatic enzyme inhibition. Also, it has been suggested that the cognitive deficits induced by benzodiazepines may be increased in patients who chronically consume large amounts of alcohol.

MANAGEMENT: The manufacturer recommends that grapefruit juice should not be taken with oral midazolam. Patients taking triazolam or alprazolam should be monitored for excessive sedation. Alternatively, the patient could consume orange juice which does not interact with these drugs. Patients should be advised to avoid alcohol during benzodiazepine therapy.

References

  1. "Product Information. Xanax (alprazolam)." Pharmacia and Upjohn PROD (2002):
  2. "Product Information. Valium (diazepam)." Roche Laboratories PROD (2002):
  3. "Product Information. Halcion (triazolam)." Pharmacia and Upjohn PROD (2001):
  4. "Grapefruit juice interactions with drugs." Med Lett Drugs Ther 37 (1995): 73-4
  5. Kupferschmidt HHT, Ha HR, Ziegler WH, Meier PJ, Krahenbuhl S "Interaction between grapefruit juice and midazolam in humans." Clin Pharmacol Ther 58 (1995): 20-8
  6. Hukkinen SK, Varhe A, Olkkola KT, Neuvonen PJ "Plasma concentrations of triazolam are increased by concomitant ingestion of grapefruit juice." Clin Pharmacol Ther 58 (1995): 127-31
  7. Bailey DG, Dresser GR, Kreeft JH, Munoz C, Freeman DJ, Bend JR "Grapefruit-felodipine interaction: Effect of unprocessed fruit and probable active ingredients." Clin Pharmacol Ther 68 (2000): 468-77
View all 7 references

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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.

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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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