Drug Interaction Report

Consumer information for this interaction is not currently available.

MONITOR CLOSELY: Coadministration of intravenous immune globulin preparations with nephrotoxic agents may potentiate the risk of renal impairment. Many commercially available intravenous formulations of immune globulin contain sucrose as a stabilizer. Immune globulin products, particularly those that contain sucrose as a stabilizer and administered at daily doses of 350 to 400 mg/kg or greater, have been associated with renal dysfunction, acute renal failure, osmotic nephrosis, and death. Factors predisposing to acute renal failure include any degree of preexisting renal insufficiency, age greater than 65 years, diabetes mellitus, volume depletion, sepsis, paraproteinemia, and concomitant use of known nephrotoxic drugs.

MANAGEMENT: Intravenous immune globulin preparations should be administered cautiously in patients treated with other potentially nephrotoxic agents (e.g., e.g., aminoglycosides; polypeptide, glycopeptide, and polymyxin antibiotics; amphotericin B; adefovir; cidofovir; tenofovir; foscarnet; cisplatin; deferasirox; gallium nitrate; lithium; mesalamine; certain immunosuppressants; intravenous bisphosphonates; intravenous pentamidine; high intravenous dosages of methotrexate; high dosages and/or chronic use of nonsteroidal anti-inflammatory agents). The manufacturers recommend administering immune globulin infusions at the minimum concentration available and at the minimum rate of infusion feasible in such patients. Clinicians should ensure that patients are not volume depleted prior to the initiation of immune globulin therapy. Monitoring of urine output and renal function tests, including the measurement of blood urea nitrogen (BUN) and serum creatinine, is recommended prior to the initial infusion and at appropriate intervals thereafter. If renal function deteriorates, discontinuation of the product should be considered. Patients should be advised to seek medical attention if they experience symptoms that may indicate nephrotoxicity such as decreased urine output, sudden weight gain, fluid retention, edema, or shortness of breath.

Food may delay and reduce the absorption of voclosporin, which may lead to lower blood levels of the medication and possibly reduced effectiveness. Voclosporin should be taken on an empty stomach at least 1 hour before or 2 hours after food. This will make it easier for your body to absorb the medication. Also, while taking voclosporin, you should avoid grapefruits and grapefruit juice. Grapefruit can raise the blood levels of voclosporin in your body and lead to increased adverse effects. Do not increase or decrease the amount of grapefruit products in your diet without first talking to your doctor. Also, if you are taking voclosporin you should avoid potassium-containing salt substitutes or over-the-counter potassium supplements without first talking to your doctor. Taking voclosporin together with these salt substitutes or supplements may cause high levels of potassium in your blood. High levels of potassium can cause weakness, irregular heartbeat, confusion, tingling of the extremities, or feelings of heaviness in the legs. Call your doctor at once if you have any of these symptoms. 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.