The effect of multiple doses of ritonavir on the pharmacokinetics of rifabutin.

Author: CatoA, CavanaughJ, GrannemanR, HsuA, LeonardJ, ShiH

Paper Details 
Original Abstract of the Article :
OBJECTIVE: To investigate the effects of ritonavir on the pharmacokinetics of rifabutin. METHODS: In a multiple-dose, randomized, parallel-group, double-blind study, subjects received 150 mg rifabutin daily for 24 days coadministered on days 15 to 24 with twice-daily doses of either placebo or rito...See full text at original site
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引用元:
https://doi.org/10.1016/S0009-9236(98)90036-4

データ提供:米国国立医学図書館(NLM)

Rifabutin and Ritonavir: A Complex Interaction

The world of drug interactions is a complex and often unpredictable landscape, like a vast desert with hidden dangers. This study delves into the interaction between rifabutin, an antimycobacterial drug, and ritonavir, a potent inhibitor of certain enzymes involved in drug metabolism. The researchers conducted a study to investigate the effects of ritonavir on the pharmacokinetics of rifabutin. The study's findings highlight the significant impact of ritonavir on rifabutin's metabolism, leading to a substantial increase in rifabutin's levels in the body. This interaction has crucial implications for drug dosing and patient safety.

Ritonavir: A Powerful Influence on Rifabutin

The study demonstrated that ritonavir significantly alters the pharmacokinetics of rifabutin. This interaction suggests that both rifabutin and its active metabolite, 25-O-desacetylrifabutin, are metabolized at least in part by the enzyme CYP3A. Ritonavir's inhibition of CYP3A leads to increased levels of both rifabutin and its metabolite, potentially increasing the risk of side effects. These findings emphasize the importance of careful monitoring and dose adjustments when administering rifabutin and ritonavir concurrently.

Navigating Drug Interactions with Caution

The study highlights the importance of being aware of potential drug interactions, particularly when administering medications that are metabolized by the same enzymes. The findings emphasize the need for careful monitoring and dose adjustments to ensure patient safety. This research provides valuable insights into the complex world of drug interactions, reminding us of the importance of vigilance and informed decision-making in healthcare.

Dr. Camel's Conclusion

Drug interactions, like the shifting sands of a desert, can be unpredictable and potentially dangerous. This research provides a cautionary tale about the interplay of rifabutin and ritonavir, emphasizing the importance of careful monitoring and dose adjustments to ensure patient safety. Navigating the complex world of drug interactions requires vigilance and a deep understanding of the potential consequences.

Date :
  1. Date Completed 1998-05-28
  2. Date Revised 2013-11-21
Further Info :

Pubmed ID

9585795

DOI: Digital Object Identifier

10.1016/S0009-9236(98)90036-4

SNS
PICO Info
in preparation
Languages

English

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