orphenadrine hydrochloride · Medicine question

Why does orphenadrine hydrochloride require caution in patients with pre-existing tachycardia?

Name: Why does orphenadrine hydrochloride require caution in patients with pre-existing tachycardia?
Published: 2026-11-08T01:59:38.369Z

iatroX medicinesPublished 8 November 2026

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Orphenadrine hydrochloride requires caution in patients with pre-existing tachycardia, such as in heart failure or thyrotoxicosis, because its antimuscarinic effects may further accelerate the heart rate.

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Orphenadrine Hydrochloride 50mg/5ml Oral SolutionRosemont Pharmaceuticals Limited · emc · SmPC §4.4 Special warnings and precautions for use · Version 8Document updated 30 November 2023

Sources checked 8 November 2026

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