Drug Interactions between bexarotene and Spherulin
This report displays the potential drug interactions for the following 2 drugs:
- bexarotene
- Spherulin (coccidioidin skin test)
Interactions between your drugs
coccidioidin skin test bexarotene
Applies to: Spherulin (coccidioidin skin test) and bexarotene
MONITOR: Immunosuppressed patients may have diminished response to diagnostic skin test antigens due to suppression of cell-mediated, delayed-type hypersensitivity. Falsely insignificant or false-negative results may occur in such patients, which may include those who have recently received or are receiving immunosuppressive agents, antilymphocyte globulins, alkylating agents, antimetabolites, radiation, some antirheumatic agents, high dosages of corticosteroids or adrenocorticotropic agents (e.g., greater than or equal to 2 mg/kg/day or 20 mg/day of prednisone or equivalent for 14 consecutive days or more), or long-term topical or inhaled corticosteroids.
MANAGEMENT: Clinicians should be aware of the potential for falsely insignificant or false-negative results when administering diagnostic skin test antigens to patients treated with immunosuppressive agents.
References
- (2001) "Product Information. Candin (candida albicans extract)." Nielsen Biosciences Inc
- (2001) "Product Information. Histolyn-Cyl (histoplasmin)." ALK Laboratories Inc
- (2001) "Product Information. Spherulin (coccidioidin skin test)." ALK Laboratories Inc
- (2001) "Product Information. MSTA Mumps Skin Test Antigen (mumps skin test antigen)." Aventis Pharmaceuticals
- (2001) "Product Information. Multitest CMI (skin test antigens, multiple)." Aventis Pharmaceuticals
- "Product Information. Tuberculin Tine Test (tuberculin purified protein derivative)." Connaught Laboratories Inc
Drug and food interactions
bexarotene food
Applies to: bexarotene
ADJUST DOSING INTERVAL: Food may enhance the oral bioavailability of bexarotene. In one clinical study, bexarotene peak plasma concentration (Cmax) and systemic exposure (AUC) resulting from a 75 to 300 mg dose were 35% and 48% higher, respectively, when administered after a fat-containing meal relative to a glucose solution. In all clinical trials, patients were instructed to take bexarotene with or immediately following a meal.
Coadministration with inhibitors of CYP450 3A4 such as grapefruit juice may theoretically increase the plasma concentrations of bexarotene. In vitro studies suggest that bexarotene is metabolized by CYP450 3A4. However, concomitant administration with multiple doses of ketoconazole, a potent CYP450 3A4 inhibitor, did not alter bexarotene plasma concentrations, which would imply that bexarotene elimination is not substantially dependent on CYP450 3A4 metabolism in vivo.
MANAGEMENT: Because safety and efficacy data are based upon administration with food, bexarotene should be administered once daily with a meal. Patients may want to avoid consuming large amounts of grapefruit or grapefruit juice.
References
- (2001) "Product Information. Targretin (bexarotene)." Ligand Pharmaceuticals
- Cerner Multum, Inc. "UK Summary of Product Characteristics."
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.
See also
Drug Interaction Classification
Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit. | |
Moderately clinically significant. Usually avoid combinations; use it only under special circumstances. | |
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. | |
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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