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Updated: Jan 20, 2026

Quantification of the Immunosuppressant Tacrolimus on Dried Blood Spots Using LC-MS/MS
Published on: November 8, 2015
Use of Rifampicin as a Cytochrome Inducer in Acute Tacrolimus Poisoning
Juan Margallo Iribarnegaray1, Rodrigo Alonso Moralejo1, Carlos Andrés Quezada Loaiza1
1Lung Transplantation Unit, Pulmonology Department, Hospital Universitario 12 de Octubre, Madrid, Spain.
Acute tacrolimus poisoning occurred in a lung transplant patient after receiving nirmatrelvir/ritonavir. Treatment with rifampicin, a cytochrome inducer, successfully lowered tacrolimus blood levels to therapeutic ranges.
Area of Science:
- Pharmacology
- Transplantation Medicine
- Drug Interactions
Background:
- Tacrolimus is a vital immunosuppressant for lung transplant recipients.
- Tacrolimus undergoes metabolism via cytochrome P450 enzymes.
- Drug interactions involving tacrolimus can significantly impact patient outcomes.
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