Drug interactions
Clomipramine + Liothyronine
Severity: Moderate
Clomipramine and Liothyronine: 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
Thyroid hormones can increase sensitivity to catecholamines and tricyclics may enhance this effect. The combination can raise the risk of tachyarrhythmias and CNS stimulation, particularly with excess thyroid hormone. Tricyclic effect may also be accelerated when thyroid hormone is used for augmentation.
What this interaction means in plain words
Clomipramine and Liothyronine 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.
Clomipramine belongs to Central Nervous System; Liothyronine belongs to Endocrine.
Why it happens
Thyroid hormone increases adrenergic receptor sensitivity, adding to tricyclic noradrenergic and cardiac effects.
What to do
Monitor heart rate, rhythm and thyroid function, and watch for agitation or tremor. Keep thyroid replacement dose at the lowest effective level.
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 Clomipramine
- Arsenic trioxide + Clomipramine Contraindicated
- Clomipramine + Dofetilide Contraindicated
- Clomipramine + Droperidol Contraindicated
- Clomipramine + Isocarboxazid Contraindicated
- Clomipramine + Methylene blue Contraindicated
- Clomipramine + Pentamidine Contraindicated
Other interactions of Liothyronine
- Alogliptin-metformin + Liothyronine Moderate
- Amitriptyline + Liothyronine Moderate
- Amobarbital + Liothyronine Moderate
- Canagliflozin-metformin + Liothyronine Moderate
- Carbamazepine + Liothyronine Moderate
- Carbonyl iron + Liothyronine Moderate
Frequently asked questions
Can I take Clomipramine with Liothyronine?
MediHelp rates the interaction as moderate. Clomipramine and Liothyronine 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. Thyroid hormones can increase sensitivity to catecholamines and tricyclics may enhance this effect. The combination can raise the risk of tachyarrhythmias and CNS stimulation, particularly with excess thyroid hormone. Tricyclic effect may also be accelerated when thyroid hormone is used for augmentation.
How serious is the interaction between Clomipramine and Liothyronine?
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 heart rate, rhythm and thyroid function, and watch for agitation or tremor. Keep thyroid replacement dose at the lowest effective level.
What other medicines interact with Clomipramine?
MediHelp also lists interactions of Clomipramine with, for example, Arsenic trioxide, Dofetilide, Droperidol. The full list is on the Clomipramine page.
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