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Drug interactions

Ramelteon + Ritlecitinib

Severity: Moderate

Ramelteon and Ritlecitinib: 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

Ritlecitinib inhibits CYP1A2, the main pathway for ramelteon metabolism, so ramelteon exposure may rise. This could cause more drowsiness, dizziness and other adverse effects.

What this interaction means in plain words

Ramelteon and Ritlecitinib 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.

Ramelteon belongs to Central Nervous System; Ritlecitinib belongs to Oncology.

Evidence level: Moderate

Why it happens

Inhibition of CYP1A2-mediated metabolism of ramelteon.

What to do

Monitor for increased sedation and consider a lower ramelteon dose. Use of strong CYP1A2 inhibitors such as fluvoxamine with ramelteon is contraindicated, so reassess if effects are marked.

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 Ramelteon with Ritlecitinib?

MediHelp rates the interaction as moderate. Ramelteon and Ritlecitinib 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. Ritlecitinib inhibits CYP1A2, the main pathway for ramelteon metabolism, so ramelteon exposure may rise. This could cause more drowsiness, dizziness and other adverse effects.

How serious is the interaction between Ramelteon and Ritlecitinib?

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 for increased sedation and consider a lower ramelteon dose. Use of strong CYP1A2 inhibitors such as fluvoxamine with ramelteon is contraindicated, so reassess if effects are marked.

What other medicines interact with Ramelteon?

MediHelp also lists interactions of Ramelteon with, for example, Calcium / magnesium / potassium / sodium oxybates, Fluvoxamine, Sodium oxybate. The full list is on the Ramelteon page.

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