Skip to main content

Drug Interactions between pirtobrutinib and Spherulin

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

Edit list (add/remove drugs)

Interactions between your drugs

Moderate

coccidioidin skin test pirtobrutinib

Applies to: Spherulin (coccidioidin skin test) and pirtobrutinib

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

  1. (2001) "Product Information. Candin (candida albicans extract)." Nielsen Biosciences Inc
  2. (2001) "Product Information. Histolyn-Cyl (histoplasmin)." ALK Laboratories Inc
  3. (2001) "Product Information. Spherulin (coccidioidin skin test)." ALK Laboratories Inc
  4. (2001) "Product Information. MSTA Mumps Skin Test Antigen (mumps skin test antigen)." Aventis Pharmaceuticals
  5. (2001) "Product Information. Multitest CMI (skin test antigens, multiple)." Aventis Pharmaceuticals
  6. "Product Information. Tuberculin Tine Test (tuberculin purified protein derivative)." Connaught Laboratories Inc
View all 6 references

Switch to consumer interaction data

Drug and food interactions

Major

pirtobrutinib food

Applies to: pirtobrutinib

GENERALLY AVOID: Grapefruit juice may increase the plasma concentrations of pirtobrutinib, which is primarily metabolized by CYP450 3A4. The proposed mechanism is inhibition of CYP450 3A4-mediated first-pass metabolism in the gut wall by certain compounds present in grapefruit. Inhibition of hepatic CYP450 3A4 may also contribute. The interaction has not been studied with grapefruit juice but has been reported for other CYP450 3A4 inhibitors. When pirtobrutinib (200 mg single dose) was administered with itraconazole, a potent CYP450 3A4 inhibitor, pirtobrutinib systemic exposure (AUC) increased by 49%. Concomitant use of diltiazem or verapamil, moderate CYP450 3A4 inhibitors, is predicted to increase pirtobrutinib AUC by 20% and 30%, respectively. In general, the effect of grapefruit juice is concentration-, dose- and preparation-dependent, and can vary widely among brands. Certain preparations of grapefruit juice (e.g., high dose, double strength) have sometimes demonstrated potent inhibition of CYP450 3A4, while other preparations (e.g., low dose, single strength) have typically demonstrated moderate inhibition. Increased exposure to pirtobrutinib may increase the risk of infection, bruising, bleeding, fatigue, musculoskeletal pain, diarrhea, edema, and dyspnea.

MANAGEMENT: It may be advisable for patients to avoid consumption of grapefruit, grapefruit juice, or supplements that contain grapefruit during treatment with pirtobrutinib.

References

  1. (2023) "Product Information. Jaypirca (pirtobrutinib)." Lilly, Eli and Company

Switch to consumer interaction data

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.


Report options

Loading...
QR code containing a link to this page

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.