astemizole interactions on FDA labels
These are pairs with astemizole where an FDA label names an interaction, grouped by the desk's grade. A drug that isn't listed here hasn't been cleared as safe with astemizole; it just isn't on this list. Open any pair in the desk to see it alongside other drugs.
Avoid together
- astemizole and Erythromycin
Why this grade
Erythromycin label, Contraindications
The Erythromycin label lists this combination under Contraindications. Contraindications: "Erythromycin is contraindicated in patients taking terfenadine, astemizole, cisapride, pimozide, ergotamine, or dihydroergotamine." Named in the label: "astemizole" Retrieved from DailyMed 2026-10-03.
Erythromycin label on DailyMed, for astemizole and Erythromycin - astemizole and Nefazodone
Why this grade
Nefazodone label, Contraindications
The Nefazodone label lists this combination under Contraindications. Contraindications: "Coadministration of terfenadine, astemizole, cisapride, pimozide, or carbamazepine with nefazodone hydrochloride is contraindicated" Named in the label: "astemizole" Retrieved from DailyMed 2026-10-02.
Nefazodone label on DailyMed, for astemizole and Nefazodone
Educational reference only. Not FDA-cleared. The Prescribing Information governs.
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