Oxybutynin Chloride ER

Medically Reviewed by Dr. Harshi Dhingra, M.D.

Last Reviewed: Mar 16, 2023

Side Effects


Oxybutynin Chloride ER (DITROPAN XL) Side Effects

Possible side effects of oxybutynin chloride ER are listed below. Call your doctor for medical advice if these side effects are severe or if they do not go away in a few days.

  • Dry mouth
  • Constipation
  • Dizziness
  • Drowsiness
  • Dry nose
  • Dry skin
  • Blurred vision
  • Dry eyes
  • Gastrointestinal adverse reactions (stomach pain, nausea, diarrhea, gas, heartburn, unusual taste)
  • Headache
  • Weakness
  • Sleep difficulties
  • Confusion
  • Nervousness
  • Flushing
  • Joint pain or back pain
  • Swelling of the hands, lower legs, ankles, or feet

Some of the clinically significant adverse reactions of oxybutynin chloride ER can be more serious. Call your doctor right away or seek emergency medical help if you experience the following serious symptoms:

  • Skin rash, hives, itching (allergic reactions)
  • Swelling of the face, eyes, lips, tongue, or throat
  • Hoarseness
  • Fast, pounding, or irregular heartbeat
  • Difficulty breathing or swallowing
  • Urinary retention or difficulty urinating (pain, urgency, frequency)

The above list may not include all the potential side effects of oxybutynin chloride ER. Contact your healthcare provider if your side effects are unusual or severe or they do not get better over time. You can also report unusual side effects to the Food and Drug Administration at 1-800-FDA-1088.

Oxybutynin chloride ER Overdose: In case of an overdose of oxybutynin chloride ER, call your doctor immediately. You can also call your local poison control center, provincial poison control center, or the national poison control center at 1-800-222-1222. Call 911 if a person has collapsed, cannot be awakened, has trouble breathing, or has had a seizure. Signs and symptoms of an oxybutynin overdose may include dry skin, fever, flushing, irregular heartbeat, nausea, vomiting, urinary difficulties, difficulty breathing or slowed breathing, enlarged pupils, inability to move, irritability, confusion, restlessness, agitation, uncontrolled shaking, seizures, hallucinations, memory loss, and loss of consciousness (coma).

Source: FDA