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Drug Interactions between Hemangeol and ivabradine

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

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Interactions between your drugs

Moderate

propranolol ivabradine

Applies to: Hemangeol (propranolol) and ivabradine

MONITOR: Coadministration of ivabradine with other drugs that can slow the heart rate such as beta-blockers, calcium channel blockers, and digitalis may increase the risk of excessive bradycardia or other conduction disturbances. Non-cardiac drugs that may also cause bradycardia include atazanavir, fingolimod, lacosamide, lithium, mefloquine, succinylcholine, thalidomide, H2-receptor antagonists, tricyclic antidepressants, and anticholinesterase or cholinergic agents.

MANAGEMENT: Caution is advised when ivabradine is prescribed with other bradycardic drugs. Heart rate should be closely monitored, and the dosage of ivabradine adjusted accordingly. Patients should be advised to report significant decreases in heart rate or symptoms such as dizziness, lightheadedness, fatigue, and hypotension.

References

  1. (2015) "Product Information. Corlanor (ivabradine)." Amgen USA

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Drug and food interactions

Major

ivabradine food

Applies to: ivabradine

GENERALLY AVOID: Grapefruit juice may significantly increase the plasma concentrations of ivabradine. The proposed mechanism is inhibition of CYP450 3A4-mediated first-pass metabolism in the gut wall by certain compounds present in grapefruit. According to the product labeling, administration with grapefruit juice (quantity unknown) resulted in an approximately twofold increase in ivabradine systemic exposure (AUC). Elevated plasma levels of ivabradine may increase the risk of excessive bradycardia and conduction disturbances.

ADJUST DOSING INTERVAL: Food delays the absorption of ivabradine by approximately 1 hour and increases plasma exposure by 20% to 40% compared to fasting conditions.

MANAGEMENT: Patients treated with ivabradine should avoid or limit consumption of grapefruit or grapefruit juice. The manufacturer recommends taking ivabradine with meals to reduce variability in exposure.

References

  1. Cerner Multum, Inc. "UK Summary of Product Characteristics."
  2. Cerner Multum, Inc. "Australian Product Information."
  3. (2015) "Product Information. Corlanor (ivabradine)." Amgen USA

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Moderate

propranolol food

Applies to: Hemangeol (propranolol)

ADJUST DOSING INTERVAL: The bioavailability of propranolol may be enhanced by food.

MANAGEMENT: Patients may be instructed to take propranolol at the same time each day, preferably with or immediately following meals.

References

  1. Olanoff LS, Walle T, Cowart TD, et al. (1986) "Food effects on propranolol systemic and oral clearance: support for a blood flow hypothesis." Clin Pharmacol Ther, 40, p. 408-14
  2. Byrne AJ, McNeil JJ, Harrison PM, Louis W, Tonkin AM, McLean AJ (1984) "Stable oral availability of sustained release propranolol when co-administered with hydralazine or food: evidence implicating substrate delivery rate as a determinant of presystemic drug interactions." Br J Clin Pharmacol, 17, s45-50

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Moderate

propranolol food

Applies to: Hemangeol (propranolol)

ADJUST DOSING INTERVAL: Concurrent administration with calcium salts may decrease the oral bioavailability of atenolol and possibly other beta-blockers. The exact mechanism of interaction is unknown. In six healthy subjects, calcium 500 mg (as lactate, carbonate, and gluconate) reduced the mean peak plasma concentration (Cmax) and area under the concentration-time curve (AUC) of atenolol (100 mg) by 51% and 32%, respectively. The elimination half-life increased by 44%. Twelve hours after the combination, beta-blocking activity (as indicated by inhibition of exercise tachycardia) was reduced compared to that with atenolol alone. However, during a 4-week treatment in six hypertensive patients, there was no difference in blood pressure values between treatments. The investigators suggest that prolongation of the elimination half-life induced by calcium coadministration may have led to atenolol cumulation during long-term dosing, which compensated for the reduced bioavailability.

MANAGEMENT: It may help to separate the administration times of beta-blockers and calcium products by at least 2 hours. Patients should be monitored for potentially diminished beta-blocking effects following the addition of calcium therapy.

References

  1. Kirch W, Schafer-Korting M, Axthelm T, Kohler H, Mutschler E (1981) "Interaction of atenolol with furosemide and calcium and aluminum salts." Clin Pharmacol Ther, 30, p. 429-35

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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

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