Oxybutynin Chloride ER

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

Last Reviewed: Mar 16, 2023

Common Questions


Common Questions about Oxybutynin Chloride ER (DITROPAN XL)


What is the best time to take oxybutynin chloride ER?

You can take oxybutynin chloride ER at any time of day. This medicine is usually taken once a day, with or without food. Try to take it at around the same time every day to maintain oxybutynin plasma concentrations. If you have side effects like drowsiness, dizziness, or blurred vision, taking the medicine before bedtime may help.



Does oxybutynin chloride ER work immediately?

No, oxybutynin chloride ER does not work immediately. Oxybutynin plasma concentrations rise for 4-6 hours after taking a dose and are then maintained steady for 24 hours. However, it can take 2 weeks for you to notice a difference in your symptoms. Moreover, it may take 6-8 weeks to get the full benefit of this medicine. Tell your doctor if you don’t have any improvement in your symptoms after 8 weeks. 



How much oxybutynin chloride ER is safe?

The maximum dose of oxybutynin chloride ER is 30 mg per day in adults and 20 mg per day in children. Your doctor will likely start you on a lower dose and slowly increase your dose based on your response. Take the medicine exactly as prescribed.



Can you take oxybutynin chloride ER long term?

Oxybutynin chloride ER is generally safe and well tolerated with long-term use. However, your doctor may suggest periodic trials off the medication every 3-12 months to see if you still need it.



When should you stop taking oxybutynin chloride ER?

You should stop taking oxybutynin chloride ER and call your doctor or seek emergency medical attention if you develop angioedema (swelling of the face, eyes, lips, tongue, or throat). This is a rare but serious complication that can lead to problems with breathing.



What is the price of Oxybutynin Chloride ER (DITROPAN XL) without insurance?

Without insurance, Oxybutynin Chloride ER can be as high as $36.00, but with a free BuzzRx prescription discount coupon, you could pay as low as $12.34 for the most common version of this medication. Use the BuzzRx drug price look-up tool to find the lowest discounted price, and be sure to enter the correct dosage, form, and quantity for the most accurate pricing. While generics tend to have the best savings, you can also use your BuzzRx card and coupons to purchase brand-name versions. It never hurts to ask your pharmacist to try BuzzRx when filling or refilling any of your prescription drugs—whether you have insurance or not.



What is the price of Oxybutynin Chloride ER (DITROPAN XL) with insurance?

Ask your pharmacist or insurance provider for your copay price on Oxybutynin Chloride ER—Copay amounts vary depending on the type of insurance plan you have and if there is a deductible to reach before prescription drug coverage begins.

You could save up to 80% on your prescription medication with a free BuzzRx discount coupon for Oxybutynin Chloride ER. When using the BuzzRx lookup tool to find the price of your medicine, be sure to enter the correct dosage, form, and quantity to receive the most accurate discounted pricing. It never hurts to ask your pharmacist to try BuzzRx when filling or refilling any of your prescriptions—whether you have insurance or not.