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Drug interactions

Lasmiditan + Tacrolimus

Severity: Moderate

Lasmiditan and Tacrolimus: 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

Lasmiditan inhibits P-glycoprotein in vitro and may increase exposure to P-gp substrates such as tacrolimus. Because tacrolimus has a narrow therapeutic index, even a modest increase could lead to toxicity.

What this interaction means in plain words

Lasmiditan and Tacrolimus 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.

Lasmiditan belongs to Central Nervous System; Tacrolimus belongs to Miscellaneous.

Evidence level: Low

Why it happens

Inhibition of intestinal P-glycoprotein efflux, increasing tacrolimus absorption.

What to do

Avoid lasmiditan where an alternative migraine therapy is suitable. If used, monitor tacrolimus trough levels and renal function around the time of dosing.

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?

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 Lasmiditan with Tacrolimus?

MediHelp rates the interaction as moderate. Lasmiditan and Tacrolimus 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. Lasmiditan inhibits P-glycoprotein in vitro and may increase exposure to P-gp substrates such as tacrolimus. Because tacrolimus has a narrow therapeutic index, even a modest increase could lead to toxicity.

How serious is the interaction between Lasmiditan and Tacrolimus?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid lasmiditan where an alternative migraine therapy is suitable. If used, monitor tacrolimus trough levels and renal function around the time of dosing.

What other medicines interact with Tacrolimus?

MediHelp also lists interactions of Tacrolimus with, for example, Adenovirus types 4 and 7 live, Bcg vaccine live, Cidofovir. The full list is on the Tacrolimus page.

Full monographs, dosing and an interaction checker in the MediHelp app

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