Drug interactions
Irinotecan + Telotristat etiprate
Severity: Moderate
Irinotecan and Telotristat etiprate: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Irinotecan is converted to its active metabolite SN-38 by carboxylesterases, and telotristat's metabolite may inhibit CES2. This could reduce activation and efficacy, or alter toxicity, though clinical data are lacking.
What this interaction means in plain words
Irinotecan and Telotristat etiprate can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Irinotecan belongs to Oncology; Telotristat etiprate belongs to Gastrointestinal Tract.
Why it happens
Carboxylesterase 2 inhibition may reduce conversion of irinotecan to SN-38.
What to do
Monitor tumour response and for diarrhoea and neutropenia during co-administration.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Irinotecan and Telotristat etiprate, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 14 days on the web. No card needed.
Other interactions of Telotristat etiprate
- Bupropion + Telotristat etiprate Moderate
- Capecitabine + Telotristat etiprate Moderate
- Everolimus + Telotristat etiprate Moderate
- Flutamide + Telotristat etiprate Moderate
- Midazolam + Telotristat etiprate Moderate
- Octreotide + Telotristat etiprate Moderate
Other interactions of Irinotecan
- Clozapine + Irinotecan Contraindicated
- Irinotecan + Sacituzumab govitecan Contraindicated
- Adenovirus types 4 and 7 live + Irinotecan Major
- Apalutamide + Irinotecan Major
- Atazanavir + Irinotecan Major
- Carbamazepine + Irinotecan Major
Frequently asked questions
Can I take Irinotecan with Telotristat etiprate?
MediHelp rates the interaction as moderate. Irinotecan and Telotristat etiprate can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Irinotecan is converted to its active metabolite SN-38 by carboxylesterases, and telotristat's metabolite may inhibit CES2. This could reduce activation and efficacy, or alter toxicity, though clinical data are lacking.
How serious is the interaction between Irinotecan and Telotristat etiprate?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor tumour response and for diarrhoea and neutropenia during co-administration.
What other medicines interact with Telotristat etiprate?
MediHelp also lists interactions of Telotristat etiprate with, for example, Bupropion, Capecitabine, Everolimus. The full list is on the Telotristat etiprate page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
