FDA label 8a805a5d-da66-4ef0-acec-cc3522e09a57

openFDA label record#

This page contains supplementary openFDA label data. For the canonical label presentation, use the corresponding DailyMed Structured Product Label.

Verified complete openFDA source JSON (canonical bytes are SHA-256 checked before publication)

SPL set ID: 037202a5-e08b-4f9d-9df8-a6dd25027748
SPL ID: 8a805a5d-da66-4ef0-acec-cc3522e09a57
Version: 14
Effective date: 2024-11-27
Source export date: 2026-09-28
Source partition: 5
Source file: https://download.open.fda.gov/drug/label/drug-label-0005-of-0014.json.zip
Source object key: raw/openfda/drug-label/2026-09-28/9839785a692b692224cd5f90f9e3a9514c9923a6f521ab83eed3bedc7c0e1d05/drug-label-0005-of-0014.json.zip
Source manifest SHA-256: cd2e66336a5cd2223fa3995098fdbdb84c6a7ee5c0a4addb236ccb22dd1e6887
Import run: 20260929T050834Z
Imported at: 2026-09-29 05:33:30

Harmonized identifier links#

Every typed identifier imported from the complete openFDA harmonization object is paginated here; values are not reduced to a first match.

Harmonized identifiers page 1 of 1 · 2 matching rows.

Type, Scope, Identifier table
Type	Scope	Identifier	Source field
spl id		8a805a5d-da66-4ef0-acec-cc3522e09a57	id
spl set id		037202a5-e08b-4f9d-9df8-a6dd25027748	set_id

Warnings cross-check#

openFDA text is shown for search and cross-checking; DailyMed SPL is canonical.

Warnings sections page 1 of 1 · 1 matching rows.

warnings

WARNINGS Phenoxybenzamine hydrochloride-induced alpha -adrenergic blockade leaves beta -adrenergic receptors unopposed. Compounds that stimulate both types of receptors may, therefore, produce an exaggerated hypotensive response and tachycardia.

Adverse reactions cross-check#

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Adverse reactions sections page 1 of 1 · 1 matching rows.

adverse reactions

ADVERSE REACTIONS The following adverse reactions have been observed, but there are insufficient data to support an estimate of their frequency. Autonomic Nervous System*: Postural hypotension, tachycardia, inhibition of ejaculation, nasal congestion, miosis. *These so-called "side effects" are actually evidence of adrenergic blockade and vary according to the degree of blockade. Miscellaneous: Gastrointestinal irritation, drowsiness, fatigue.

Reported adverse events (FAERS/openFDA)#

Adverse event summaries are temporarily unavailable. Other product information remains available.