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Medicines phenoxybenzamine hydrochlorideQuestion & answer

phenoxybenzamine hydrochloride · Medicine question

Why can it cause dizziness on standing?

iatroX medicinesPublished 21 August 2026Reviewed 21 August 2026

The answer

Answer

Alpha blockade relaxes blood vessels and can prevent blood pressure adjusting quickly when standing, causing postural hypotension.

Sources for this answer

Phenoxybenzamine / Dibenyline 10mg Capsulesemc · SmPC Current selected SmPC · Version 7

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phenoxybenzamine hydrochloride

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What is phenoxybenzamine hydrochloride used for?Is it a selective alpha blocker?Does the capsule contain lactose?What happens if too much is taken?

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