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Drug interactions

Telotristat ethyl + Theophylline

Severity: Minor

Telotristat ethyl and Theophylline: minor 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

Telotristat induces CYP3A4 and may reduce exposure to sensitive substrates. Theophylline relies mainly on CYP1A2, so the effect is likely small, though reduced efficacy is possible.

What this interaction means in plain words

Telotristat ethyl and Theophylline have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.

Evidence level: Low

Why it happens

Induction of CYP3A4 by telotristat may increase minor hepatic pathways for theophylline.

What to do

Monitor asthma or COPD control and check a theophylline level if response declines.

What to ask your pharmacist

  • Is there anything I should notice while taking both?
  • Do I need to tell my doctor at the next visit?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Telotristat ethyl with Theophylline?

MediHelp rates the interaction as minor. Telotristat ethyl and Theophylline have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Telotristat induces CYP3A4 and may reduce exposure to sensitive substrates. Theophylline relies mainly on CYP1A2, so the effect is likely small, though reduced efficacy is possible.

How serious is the interaction between Telotristat ethyl and Theophylline?

MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor asthma or COPD control and check a theophylline level if response declines.

What other medicines interact with Theophylline?

MediHelp also lists interactions of Theophylline with, for example, Riociguat, Adenosine, Apalutamide. The full list is on the Theophylline page.

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