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Drug Interactions between Aciphex Sprinkle and Crixivan

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

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Interactions between your drugs

Moderate

indinavir RABEprazole

Applies to: Crixivan (indinavir) and Aciphex Sprinkle (rabeprazole)

MONITOR: Inhibitors of the proton pump (PPIs or potassium-competitive acid blockers [PCABs]) may decrease the gastrointestinal absorption of indinavir. The proposed mechanism is a pH-dependent reduction in drug dissolution or absorption. The interaction has been reported specifically with omeprazole but may be expected with other proton pump inhibitors based on their common pharmacologic action.

MANAGEMENT: Caution is advised during the chronic use of these drugs with indinavir due to the risk of treatment failure and emergence of drug resistance associated with subtherapeutic levels of indinavir. Patients should be monitored for altered antiviral effectiveness.

References

  1. Burger DM, Hugen PWH, Kroon FP, Groeneveld P, Brinkman K, Foudraine NA, Sprenger H, Koopmans PP, Hekster YA (1998) "Pharmacokinetic interaction between the proton pump inhibitor omeprazole and the HIV protease inhibitor indinavir." AIDS, 12, p. 2080-2
  2. (2022) "Product Information. Voquezna Dual Pak (amoxicillin-vonoprazan)." Phathom Pharmaceuticals, Inc
  3. (2022) "Product Information. Voquezna Triple Pak (amoxicillin/clarithromycin/vonoprazan)." Phathom Pharmaceuticals, Inc

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Drug and food interactions

Moderate

indinavir food

Applies to: Crixivan (indinavir)

ADJUST DOSING INTERVAL: According to the manufacturer, coadministration with a meal high in calories, fat, and protein reduces the absorption of indinavir. In ten patients given indinavir in this manner, the peak plasma concentration (Cmax) and area under the concentration-time curve (AUC) of indinavir decreased by an average of 84% and 77%, respectively. In contrast, grapefruit juice may have only minor effects on the oral bioavailability of indinavir. The manufacturer's package labeling states that administration of a single 400 mg dose of indinavir with 8 oz. of grapefruit juice decreased indinavir AUC by an average of 26%. Likewise, a study consisting of 14 HIV-infected subjects found no uniform nor significant changes in steady-state indinavir AUC during administration with double-strength grapefruit juice compared to water. There was, however, a delay in absorption (Tmax) due to grapefruit juice that is unlikely to be of clinical significance.

MANAGEMENT: To ensure maximal oral absorption, indinavir should be administered without food but with water 1 hour before or 2 hours after a meal. Alternatively, indinavir may be administered with other liquids such as skim milk, juice, coffee, or tea, or with a light meal (e.g., dry toast with jelly, juice, and coffee with skim milk and sugar; corn flakes, skim milk and sugar).

References

  1. (2001) "Product Information. Crixivan (indinavir)." Merck & Co., Inc
  2. Yeh KC, Deutsch PJ, Haddix H, Hesney M, Hoagland V, Ju WD, Justice SJ, Osborne B, Sterrett AT, Stone JA, Woolf E, Waldman S (1998) "Single-dose pharmacokinetics of indinavir and the effect of food." Antimicrob Agents Chemother, 42, p. 332-8
  3. Shelton MJ, Wynn HE, Newitt RG, DiFrancesco R (2001) "Effects of grapefruit juice on pharmacokinetic exposure to indinavir in HIV-positive subjects." J Clin Pharmacol, 41, p. 435-42

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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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