Drug Interaction Report

Consumer information for this interaction is not currently available.

MONITOR: Coadministration with inhibitors of CYP450 3A4 and P-glycoprotein may increase the plasma concentrations and pharmacologic effects of aliskiren, which is a substrate of both the isoenzyme and efflux transporter. According to the product labeling, plasma levels of aliskiren were increased approximately 80% by the potent CYP450 3A4 and moderate P-gp inhibitor ketoconazole at a dosage of 200 mg twice daily. A 400 mg once daily dose of ketoconazole was not studied, but would be expected to further increase the magnitude of interaction. Similarly, plasma levels of aliskiren increased by approximately 2-fold when coadministered with the moderate CYP450 3A4 and potent P-gp inhibitor verapamil at a dosage of 240 mg once daily.

MANAGEMENT: Pharmacologic response to aliskiren should be monitored more closely whenever a CYP450 3A4 and/or P-gp inhibitor is added to or withdrawn from therapy, and the aliskiren dosage adjusted if necessary. Patients should be advised to notify their physician if they experience excessive adverse effects of aliskiren such as dizziness, lightheadedness, diarrhea, abdominal pain, and gastroesophageal reflux. The individual product labeling of the coadministered drug should be consulted for further guidance.

Information for this minor interaction is available on the professional version.

Food can affect the absorption of aliskiren from the intestine. Therefore, you should take aliskiren at the same time each day exactly as prescribed by your doctor. You may take aliskiren with or without food, but take it the same way every time. This will help keep blood levels and effects of the medication steady. You should avoid drinking orange, apple, or grapefruit juice as much as possible during treatment with aliskiren. Studies have shown that drinking these juices regularly or within a short period before or after a dose of aliskiren can interfere with the absorption of the medication.

AmLODIPine and ethanol (alcohol) may have additive effects in lowering your blood pressure. You may experience headache, dizziness, lightheadedness, fainting, and/or changes in pulse or heart rate. These side effects are most likely to be seen at the beginning of treatment, following a dose increase, or when treatment is restarted after an interruption. Let your doctor know if you develop these symptoms and they do not go away after a few days or they become troublesome. Avoid driving or operating hazardous machinery until you know how the medications affect you, and use caution when getting up from a sitting or lying position. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Using amLODIPine together with multivitamin with minerals can decrease the effects of amLODIPine. Talk with your doctor before using amLODIPine and multivitamin with minerals together. You may need a dose adjustment or need your blood pressure checked more often if you take both medications. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Information for this minor interaction is available on the professional version.