Drug interactions
Calcium + Tiratricol
Severity: Moderate
Calcium and Tiratricol: 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
Calcium salts can bind thyroid hormone analogues in the gut and lower their absorption. This can reduce tiratricol effect.
What this interaction means in plain words
Calcium and Tiratricol 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.
Calcium belongs to Gastrointestinal Tract; Tiratricol belongs to Endocrine.
Why it happens
Chelation or binding of tiratricol by calcium in the gastrointestinal tract impairs absorption.
What to do
Take tiratricol more than 2 hours apart from calcium supplements, and monitor thyroid parameters if the regimen changes.
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?
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Other interactions of Tiratricol
- Levothyroxine + Tiratricol Major
- Carbamazepine + Tiratricol Moderate
- Carbimazole + Tiratricol Moderate
- Charcoal + Tiratricol Moderate
- Chloroquine + Tiratricol Moderate
- Cholestyramine + Tiratricol Moderate
Other interactions of Calcium
- Calcium + Ceftriaxone Contraindicated
- Acalabrutinib + Calcium Moderate
- Alendronate + Calcium Moderate
- Atazanavir + Calcium Moderate
- Baloxavir marboxil + Calcium Moderate
- Bendroflumethiazide + Calcium Moderate
Frequently asked questions
Can I take Calcium with Tiratricol?
MediHelp rates the interaction as moderate. Calcium and Tiratricol 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. Calcium salts can bind thyroid hormone analogues in the gut and lower their absorption. This can reduce tiratricol effect.
How serious is the interaction between Calcium and Tiratricol?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Take tiratricol more than 2 hours apart from calcium supplements, and monitor thyroid parameters if the regimen changes.
What other medicines interact with Tiratricol?
MediHelp also lists interactions of Tiratricol with, for example, Levothyroxine, Carbamazepine, Carbimazole. The full list is on the Tiratricol page.
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