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oxybutynin vs rivastigmine

Side-by-side comparison of oxybutynin and rivastigmine. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.

minor Known Drug Interaction

7.2 Cholinomimetic and Anticholinergic Medications Rivastigmine tartrate may increase the cholinergic effects of other cholinomimetic medications and may also interfere with the activity of anticholinergic medications (e.g., oxybutynin, tolterodine).

Recommendation: Tell your doctor if your symptoms return, as they may need to change your medications.

Drug Class
oxybutynin Anticholinergic / Antispasmodic
rivastigmine Acetylcholinesterase Inhibitor
Type
oxybutynin Prescription
rivastigmine Prescription
Summary
oxybutynin

Oxybutynin extended-release tablets help control an overactive bladder. It reduces the feeling of needing to go to the bathroom often.

rivastigmine

Rivastigmine (Exelon) is a medicine that helps improve memory and thinking in people with dementia. It works by increasing a chemical in the brain that is important for these functions.

What It Treats
oxybutynin

This medicine treats overactive bladder. It helps with symptoms like needing to urinate frequently, feeling a sudden urge to urinate, and leaking urine. It can also treat overactive bladder in children 6 years and older caused by nerve problems.

rivastigmine

This medicine treats mild to moderate dementia caused by Alzheimer's disease. It also treats mild to moderate dementia linked to Parkinson's disease. Dementia affects memory, thinking, and the ability to do daily activities.

How It Works
oxybutynin

Oxybutynin belongs to a class of drugs called antimuscarinics. It works by relaxing the bladder muscles. This helps to decrease the urge to urinate and prevent leakage.

rivastigmine

Rivastigmine helps increase the amount of a chemical called acetylcholine in your brain. Acetylcholine is important for memory and thinking. By increasing this chemical, rivastigmine can help improve these functions in people with dementia.

Common Side Effects
oxybutynin
  • Dry mouth
  • Constipation
  • Diarrhea
  • Headache
  • Feeling sleepy
rivastigmine
  • Nausea
  • Vomiting
  • Loss of appetite
  • Upset stomach
  • Weakness
FAERS Reports
oxybutynin
  • Feeling tired 1,539
  • Falling down 1,466
  • Feeling sick to your stomach 1,211
  • Feeling unsteady or lightheaded 1,143
  • Loose, watery stools 1,078
rivastigmine
  • Death 2,176
  • Fall 1,664
  • Seeing or hearing things that are not there 1,365
  • Confusion 1,258
  • Throwing up 883
Serious Warnings
oxybutynin

Oxybutynin can cause swelling of the face, lips, tongue, and throat (angioedema). If this happens, stop taking the medicine right away and get medical help. This medicine can also cause confusion, hallucinations, and drowsiness. Be careful driving or operating machinery until you know how it affects you. Use caution if you have dementia, Parkinson's disease, myasthenia gravis, or decreased gut motility.

rivastigmine

This medicine can cause significant nausea, vomiting, diarrhea, loss of appetite, and weight loss. These side effects can lead to dehydration, which can be serious. If you have a skin reaction that spreads, stop taking this medicine.

Pregnancy
oxybutynin

Tell your doctor if you are pregnant or plan to become pregnant. It is not known if this medicine will harm your unborn baby. Talk to your doctor if you are breastfeeding.

rivastigmine

It is not known if rivastigmine will harm an unborn baby. Talk to your doctor if you are pregnant or plan to become pregnant. It is also not known if rivastigmine passes into breast milk. Talk to your doctor about the best way to feed your baby if you are taking this medicine.

Also Compare, Nearby Drugs

How to Read This oxybutynin vs rivastigmine Comparison

oxybutynin is classified in the Anticholinergic / Antispasmodic drug class, while rivastigmine sits within the Acetylcholinesterase Inhibitor class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are prescription-only, so a licensed provider must authorize use.

Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, oxybutynin has 6,437 submissions while rivastigmine has 7,346. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. These two drugs have a known minor interaction flagged in FDA labeling, attributed to these drugs have opposite effects on the body. rivastigmine can prevent oxybutynin from working the way it is supposed to.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.

A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between oxybutynin and rivastigmine - always consult your physician or pharmacist first.

Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.