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Drug Interactions With Oxybutynin ER

Oxybutynin ER Interactions Explained

The following sections explain in detail the potentially negative interactions that can occur when oxybutynin ER is combined with any of the drugs listed above.
 
Acetylcholinesterase Inhibitors
Taking oxybutynin ER with an acetylcholinesterase inhibitor can make both medications less effective. Your healthcare provider may need to monitor you more closely and adjust your dose of these medications.
 
Anticholinergic Medications
Taking an anticholinergic medication with oxybutynin ER (which is also an anticholinergic medication) can increase your risk of oxybutynin ER side effects, such as dry mouth, constipation, dry eyes, or difficulty passing urine.
 
Certain Antifungals or Antibiotics
Some antibiotic or antifungal medications may increase the level of oxybutynin ER in your blood. Your healthcare provider may recommend that you take a lower oxybutynin ER dosage if you are taking certain antibiotics or antifungals.
 
Pramlintide (Symlin)
Both pramlintide and anticholinergic medications (including oxybutynin ER) can slow the movement of food through the digestive tract. Taking them together can increase the risk of constipation or nausea. Talk with your healthcare provider before taking these medications together.
 
Protease Inhibitors
Protease inhibitors may increase the level of oxybutynin ER in your blood. Your healthcare provider may recommend that you take a lower oxybutynin ER dosage if you are taking a protease inhibitor.
 

Final Thoughts on Oxybutynin ER Drug Interactions

It is possible that not every oxybutynin ER drug interaction was discussed in this article. Therefore, you should talk with your pharmacist or healthcare provider about drug interactions with oxybutynin ER that may apply to your situation.
 
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