Oxybutynin: Side Effects, Uses & Monitoring
Oxybutynin chloride extended-release tablets are once daily controlled-release tablets indicated for the treatment of overactive bladder with symptoms of urge urinary incontinence, urgency, and frequency.
- Data source
- FDA labeling via NIH DailyMed (label 82c40f61…)
- Label version
- current
- Last reviewed
- 2026
Reported adverse reactions
Reactions listed in current FDA labeling, with the highest frequency reported across summarized placebo-controlled trials.
| Adverse reaction (as reported in labeling) | Reported frequency* |
|---|---|
| Digestive | 61% |
| Constipation | 13% |
| Nervous | 12% |
| General | 10% |
| Diarrhea | 9% |
| Nausea | 9% |
| Special senses | 8% |
| Asthenia | 7% |
| Pain | 7% |
| Dyspepsia | 7% |
| Dizziness | 6% |
| Respiratory | 6% |
| Dry eyes | 6% |
| Urogenital | 5% |
*Highest percentage reported for the active moiety across placebo-controlled trial tables in current FDA labeling. Values reflect trial reporting, not your individual risk.
Labeled uses (from FDA prescribing information)
Oxybutynin chloride extended-release tablets are once daily controlled-release tablets indicated for the treatment of overactive bladder with symptoms of urge urinary incontinence, urgency, and frequency. Pediatric use information for the treatment of patients aged 6 years and older with symptoms of detrusor overactivity associated with a neurological condition (e.g., spina bifida) is approved for Alza Corporation’s oxybutynin extended-release tablets. However, due to Alza Corporation’s marketing exclusivity rights, this drug product is not labeled for pediatric use.
Conditions associated with Oxybutynin in labeling
Frequently Asked Questions
What is Oxybutynin used for?
FDA labeling lists the approved uses shown above under "Labeled uses." This summary is informational; only a qualified prescriber can determine whether a medication is appropriate for you.
What are the most commonly reported side effects of Oxybutynin?
The table above shows adverse reactions and the highest frequencies reported in placebo-controlled trials summarized in current FDA labeling for Oxybutynin. Individual risk varies.
Does Oxybutynin require lab monitoring?
Monitoring needs vary. Ask your healthcare provider whether any lab tests apply while taking Oxybutynin.
Where does this information come from?
All clinical facts on this page were extracted from the current FDA-registered product labeling for this ingredient, published by manufacturers through NIH DailyMed. See the source link below.
Medical disclaimer: Educational content extracted from public FDA labeling. Not medical advice. Always consult a qualified healthcare professional before starting, stopping, or changing any medication.