Skip to Content

Oxybutynin Side Effects

In Summary

Commonly reported side effects of oxybutynin include: drowsiness, constipation, and local pruritus. Other side effects include: urinary tract infection, dizziness, headache, dyspepsia, blurred vision, nausea, rhinitis, and xerophthalmia. See below for a comprehensive list of adverse effects.

For the Consumer

Applies to oxybutynin: oral syrup, oral tablet, oral tablet extended release

As well as its needed effects, oxybutynin may cause unwanted side effects that require medical attention.

Severity: Major

If any of the following side effects occur while taking oxybutynin, check with your doctor immediately:

Rare:
  • Eye pain
  • skin rash or hives

If any of the following symptoms of overdose occur while taking oxybutynin, get emergency help immediately:

Symptoms of overdose:
  • Clumsiness or unsteadiness
  • confusion
  • convulsions
  • dizziness
  • drowsiness (severe)
  • fainting
  • fast, slow, or irregular heartbeat
  • fever
  • flushing or redness of the face
  • hallucinations (seeing, hearing, or feeling things that are not there)
  • troubled breathing
  • unusual excitement, nervousness, restlessness, or irritability

Severity: Minor

Some oxybutynin side effects may not need any medical attention. As your body gets used to the medicine these side effects may disappear. Your health care professional may be able to help you prevent or reduce these side effects, but do check with them if any of the following side effects continue, or if you are concerned about them:

More common:
  • Acid or sour stomach
  • belching
  • decreased sweating
  • diarrhea
  • difficulty having a bowel movement (stool)
  • drowsiness
  • dryness of the eyes, mouth, nose, or throat
  • heartburn
  • indigestion
  • runny nose
  • stomach discomfort, upset, or pain
Less common or rare:
  • Blurred vision
  • decreased flow of breast milk
  • decreased sexual ability
  • difficulty in swallowing
  • feeling of warmth or heat
  • headache
  • increased sensitivity of the eyes to light
  • nausea or vomiting
  • trouble with sleeping
  • unusual tiredness or weakness
Incidence not known: - Observed during clinical practice with oxybutynin; estimates of frequency cannot be determined
  • Bloating or swelling of the face, arms, hands, lower legs, or feet
  • decreased interest in sexual intercourse
  • inability to have or keep an erection
  • loss in sexual ability, desire, drive, or performance
  • rapid weight gain
  • tingling of the hands or feet
  • unusual weight gain or loss

For Healthcare Professionals

Applies to oxybutynin: oral syrup, oral tablet, oral tablet extended release, transdermal film extended release, transdermal gel

Hypersensitivity

Uncommon (0.1% to 1%): Hypersensitivity
Frequency not reported: Anaphylactic reaction[Ref]

Cardiovascular

Common (1% to 10%): Palpitations
Uncommon (0.1% to 1%): Cardiac arrhythmia tachycardia, vasodilation, hypertension, flushing
Frequency not reported: Heat stroke[Ref]

Dermatologic

Very common (10% or more): Dry skin, pruritus
Common (1% to 10%): Flushing, rash
Frequency not reported: Angioedema, hypohidrosis[Ref]

Endocrine

Postmarketing reports: Decreased lactation[Ref]

Gastrointestinal

Very common (10% or more): Dry mouth (up to 72%), constipation (up to 15%), nausea
Common (1% to 10%): Diarrhea, dyspepsia, abdominal pain, vomiting, flatulence, gastroesophageal reflux disease
Uncommon (0.1% to 1%): Abdominal discomfort
Frequency not reported: Pseudo-obstruction in patients at risk (elderly or patients with constipation and treated with other drugs that decrease intestinal motility), decreased GI motility[Ref]

General

The most common (incidence 5% or greater) adverse reactions were dry mouth, constipation, diarrhea, headache, somnolence, and dizziness.[Ref]

Genitourinary

Common (1% to 10%): Urinary tract infection, urinary hesitation, urinary retention, dysuria, increased post void retention
Frequency not reported: Impotence, suppression of lactation, cystitis, aggravation of prostatic hypertrophy[Ref]

Immunologic

Uncommon (0.1% to 1%): Fungal infection[Ref]

Local

Very common (10% or more): Application site pruritus (16.8%)
Common (1% to 10%): Application site erythema, application site vesicles, application site rash, application site macules[Ref]

Metabolic

Uncommon (0.1% to 1%): Anorexia, fluid retention[Ref]

Musculoskeletal

Uncommon (0.1% to 1%): Back pain[Ref]

Nervous system

Very common (10% or more): Dizziness (up to 17%), somnolence (up to 14%), headache, drowsiness, confusion
Common (1% to 10%): Dysgeusia
Uncommon (0.1% to 1%): Dysphagia, convulsions
Frequency not reported: Cognitive disorders in elderly, convulsions, agitation, nightmares, anxiety, paranoia, symptoms of depression, hallucinations, asthenia, insomnia, restlessness, dependence to this drug (in patients with history of drug or substance abuse)[Ref]

Ocular

Common (1% to 10%): Blurred vision, dry eye, abnormal vision
Uncommon (0.1% to 1%): Angle closure glaucoma
Frequency not reported: Onset of narrow-angle glaucoma, mydriasis, intraocular hypertension, amblyopia, cycloplegia, decreased lacrimation[Ref]

Other

Common (1% to 10%): Fatigue
Uncommon (0.1% to 1%): Dysphonia, thirst
Frequency not reported: Falls, accidental injury[Ref]

Psychiatric

Common (1% to 10%): Insomnia, nervousness
Uncommon (0.1% to 1%): Hallucinations, confusional state, agitation, memory impairment
Frequency not reported: Psychotic disorder, anxiety, nightmares, paranoia[Ref]

Respiratory

Common (1% to 10%): Cough, oropharyngeal pain, dry throat, nasal dryness
Uncommon (0.1% to 1%): Upper respiratory tract infection, rhinitis, chest discomfort, hoarseness
Rare (0.01% to 0.1%): Nasal congestion, throat irritation[Ref]

References

1. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0

2. Pharmaceutical Society of Australia "APPGuide online. Australian prescription products guide online. Available from: URL: http://www.appco.com.au/appguide/default.asp." ([2006]):

3. "Product Information. Ditropan (oxybutynin)." Hoechst Marion-Roussel Inc, Kansas City, MO.

It is possible that some side effects of oxybutynin may not have been reported. These can be reported to the FDA here. Always consult a healthcare professional for medical advice.

Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate safety, effectiveness, or appropriateness for any given patient. Drugs.com does not assume any responsibility for any aspect of healthcare administered with the aid of materials provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the substances you are taking, check with your doctor, nurse, or pharmacist.

Hide