Oxybutynin Chloride

openFDA label record#

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

Brand name
Oxybutynin Chloride
Generic name
OXYBUTYNIN CHLORIDE
Manufacturer
Upsher-Smith Laboratories, LLC
Product type
HUMAN PRESCRIPTION DRUG
SPL set ID
3ee6835a-7a7d-49a9-8460-2f1dd270ead3
SPL ID
45af3420-b44f-39a1-e063-6394a90ad626
Version
17
Effective date
2025-12-11
Source export date
2026-09-28
Source partition
11
Source file
https://download.open.fda.gov/drug/label/drug-label-0011-of-0014.json.zip
Source object key
raw/openfda/drug-label/2026-09-28/aa96b5a2be6b394393acd0090f6948bdf99e0e8e00666f81608929c8fa83db77/drug-label-0011-of-0014.json.zip
Source manifest SHA-256
cd2e66336a5cd2223fa3995098fdbdb84c6a7ee5c0a4addb236ccb22dd1e6887
Import run
20260929T050834Z
Imported at
2026-09-29 06:16:59
Harmonized routes table
Harmonized routes
ORAL

Warnings cross-check#

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warnings

WARNINGS Angioedema of the face, lips, tongue and/or larynx has been reported with oxybutynin. In some cases, angioedema occurred after the first dose. Angioedema associated with upper airway swelling may be life-threatening. If involvement of the tongue, hypopharynx, or larynx occurs, oxybutynin should be promptly discontinued and appropriate therapy and/or measures necessary to ensure a patent airway should be promptly provided.

Adverse reactions cross-check#

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adverse reactions

ADVERSE REACTIONS The safety and efficacy of oxybutynin chloride was evaluated in a total of 199 patients in three clinical trials. These participants were treated with oxybutynin chloride 5 mg/day to 20 mg/day for up to 6 weeks. Table 3 shows the incidence of adverse events judged by investigators to be at least possibly related to treatment and reported by at least 5% of patients. Table 3 Incidence (%) of Adverse Events Reported by ≥5% of Patients Using Oxybutynin Chloride (5 to 20 mg/day) Body System Adverse Event Oxybutynin Chloride (5 to 20 mg/day) (n=199) Infections and Infestations Urinary tract infection 6.5% Psychiatric Disorders Insomnia 5.5% Nervousness 6.5% Nervous System Disorders Dizziness 16.6% Somnolence 14.0% Headache 7.5% Eye Disorders Blurred vision 9.6% Gastrointestinal Disorders Dry mouth 71.4% Constipation 15.1% Nausea 11.6% Dyspepsia 6.0% Renal and Urinary Disorders Urinary Hesitation 8.5% Urinary Retention 6.0% The most common adverse events reported by patients receiving oxybutynin chloride 5 to 20 mg/day were the expected side effects of anticholinergic agents. The incidence of dry mouth was dose-related. In addition, the following adverse events were reported by 1% to <5% of patients using oxybutynin chloride (5 to 20 mg/day) in all studies. Infections and Infestations: nasopharyngitis, upper respiratory tract infection, bronchitis, cystitis, fungal infection Metabolism and Nutrition Disorders: fluid retention Psychiatric Disorders: confusional state Nervous System Disorders: dysgeusia, sinus headache Eye Disorders: keratoconjunctivitis sicca, eye irritation Cardiac Disorders: palpitations, sinus arrhythmia Vascular Disorders: flushing Respiratory, Thoracic and Mediastinal Disorders: nasal dryness, cough, pharyngolaryngeal pain, dry throat, sinus congestion, hoarseness, asthma, nasal congestion Gastrointestinal Disorders: diarrhea, abdominal pain, loose stools, flatulence, vomiting, abdominal pain upper, dysphagia, aptyalism, eructation, tongue coated Skin and Subcutaneous Tissue Disorders: dry skin, pruritis Musculoskeletal and Connective Tissue Disorders: back pain, arthralgia, pain in extremity, flank pain Renal and Urinary Disorders: dysuria, pollakiuria General Disorders and Administration Site Conditions: fatigue, edema peripheral, asthenia, pain, thirst, edema Investigations: blood pressure increased, blood glucose increased, blood pressure decreased Injury, Poisoning, and Procedural Complications : fall Postmarketing Surveillance Because postmarketing adverse events are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. The following additional adverse events have been reported from worldwide postmarketing experience with oxybutynin chloride: Psychiatric Disorders: psychotic disorder, agitation, hallucination, memory impairment Nervous System Disorders: convulsions Eye Disorders: cycloplegia, mydriasis, glaucoma Cardiac Disorders: tachycardia, QT interval prolongation, chest discomfort Gastrointestinal Disorders: decreased gastrointestinal motility, frequent bowel movement Skin and Subcutaneous Tissue Disorders: rash, decreased sweating Renal and Urinary Disorders: impotence Reproductive System and Breast Disorders: suppression of lactation General Disorders and Administration Site Conditions: hypersensitivity reactions, including angioedema with airway obstruction, urticaria, and face edema; rare anaphylactic reactions requiring hospitalization for emergency treatment Metabolism and Nutrition Disorders: anorexia Respiratory, Thoracic and Mediastinal Disorders: dysphonia

adverse reactions table

<table width="65%"><caption>Table 3 Incidence (%) of Adverse Events Reported by &#x2265;5% of Patients Using Oxybutynin Chloride (5 to 20 mg/day)</caption><col width="35%" align="left" valign="top"/><col width="32%" align="left" valign="top"/><col width="33%" align="center" valign="top"/><thead><tr><th styleCode="Lrule">Body System</th><th>Adverse Event</th><th styleCode="Rrule">Oxybutynin Chloride (5 to 20 mg/day) (n=199) </th></tr></thead><tbody><tr><td styleCode="Lrule">Infections and Infestations</td><td>Urinary tract infection</td><td styleCode="Rrule">6.5%</td></tr><tr><td styleCode="Lrule">Psychiatric Disorders</td><td>Insomnia</td><td styleCode="Rrule">5.5%</td></tr><tr><td styleCode="Lrule"/><td>Nervousness</td><td styleCode="Rrule">6.5%</td></tr><tr><td styleCode="Lrule">Nervous System Disorders</td><td>Dizziness</td><td styleCode="Rrule">16.6%</td></tr><tr><td styleCode="Lrule"/><td>Somnolence</td><td styleCode="Rrule">14.0%</td></tr><tr><td styleCode="Lrule"/><td>Headache</td><td styleCode="Rrule">7.5%</td></tr><tr><td styleCode="Lrule">Eye Disorders</td><td>Blurred vision</td><td styleCode="Rrule">9.6%</td></tr><tr><td styleCode="Lrule">Gastrointestinal Disorders</td><td>Dry mouth</td><td styleCode="Rrule">71.4%</td></tr><tr><td styleCode="Lrule"/><td>Constipation</td><td styleCode="Rrule">15.1%</td></tr><tr><td styleCode="Lrule"/><td>Nausea</td><td styleCode="Rrule">11.6%</td></tr><tr><td styleCode="Lrule"/><td>Dyspepsia</td><td styleCode="Rrule">6.0%</td></tr><tr><td styleCode="Lrule">Renal and Urinary Disorders</td><td>Urinary Hesitation</td><td styleCode="Rrule">8.5%</td></tr><tr><td styleCode="Lrule"/><td>Urinary Retention</td><td styleCode="Rrule">6.0%</td></tr></tbody></table>

Reported adverse events (FAERS/openFDA)#

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