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Drug interactions

Ramelteon + Ziprasidone

Severity: Minor

Ramelteon and Ziprasidone: 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

Ziprasidone commonly causes somnolence, and ramelteon may add to drowsiness and reduced alertness. Ramelteon has no known effect on QT interval, so the cardiac risk of ziprasidone is not changed.

What this interaction means in plain words

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

Ramelteon belongs to Central Nervous System; Ziprasidone belongs to Central Nervous System.

Evidence level: Low

Why it happens

Additive CNS depressant effects without a known pharmacokinetic interaction.

What to do

Counsel on additive sedation and caution with driving. Reassess the need for the hypnotic if daytime somnolence is troublesome.

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 Ramelteon with Ziprasidone?

MediHelp rates the interaction as minor. Ramelteon and Ziprasidone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Ziprasidone commonly causes somnolence, and ramelteon may add to drowsiness and reduced alertness. Ramelteon has no known effect on QT interval, so the cardiac risk of ziprasidone is not changed.

How serious is the interaction between Ramelteon and Ziprasidone?

MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Counsel on additive sedation and caution with driving. Reassess the need for the hypnotic if daytime somnolence is troublesome.

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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