fesoterodine vs trospium
Side-by-side comparison of fesoterodine and trospium Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
Toviaz
Sanctura
Fesoterodine is a medicine that helps control an overactive bladder. It reduces the feeling of needing to go to the bathroom so often.
Trospium chloride (Sanctura) helps control an overactive bladder. It reduces the feeling of needing to go to the bathroom often.
This medicine treats overactive bladder (OAB) in adults. OAB can cause you to feel a sudden need to urinate. It can also cause you to urinate more often than normal, and leak urine.
This medicine treats overactive bladder (OAB). OAB can cause a frequent and urgent need to urinate. It can also cause urge urinary incontinence, which is leaking urine when you feel a sudden need to go.
Fesoterodine belongs to a class of drugs called anticholinergics. It works by blocking certain nerve signals to the bladder. This helps to relax the bladder muscles and reduce the urge to urinate.
Trospium chloride blocks the action of a chemical called acetylcholine. This chemical can cause bladder muscles to squeeze too much. By blocking acetylcholine, the medicine helps the bladder relax, reducing the urge to urinate.
- • Dry mouth
- • Constipation
- • Dry mouth
- • Constipation
- • Headache
- Drug not working 1,662
- Dry mouth 823
- Fall 529
- Tiredness 505
- Using the drug for something it's not approved for 505
No adverse event reports.
Fesoterodine can cause swelling of the face, lips, tongue, or throat. This can be life-threatening, so stop taking the medicine and get medical help right away if this happens. Fesoterodine is not recommended if you have a blockage in your bladder or have problems with food moving through your digestive system. Use with caution if you have narrow-angle glaucoma or myasthenia gravis.
Trospium chloride should be used carefully if you have a bladder blockage or stomach problems, as it can cause you to not be able to urinate or have gastric retention. This medicine may cause swelling of the face, lips, tongue, or throat, which can be life-threatening. Get medical help right away if this happens. Trospium may cause sleepiness, so be careful driving or using machines until you know how it affects you.
It is not known if fesoterodine can harm an unborn baby. Talk to your doctor if you are pregnant or plan to become pregnant. It is also not known if fesoterodine passes into breast milk. Talk to your doctor about the best way to feed your baby if you are taking this medicine.
Tell your doctor if you are pregnant or plan to become pregnant. This medicine should only be used during pregnancy if clearly needed. It is not known if this medicine passes into breast milk, so talk to your doctor if you are breastfeeding.
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How to Read This fesoterodine vs trospium Comparison
fesoterodine is classified in the Anticholinergic (Overactive Bladder) drug class, while trospium sits within the Anticholinergic (Overactive Bladder) class. Because both drugs share the same classification, they are often considered interchangeable in theory — but clinical outcomes rarely track that cleanly. 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, fesoterodine has 4,024 submissions while trospium has 0. Those figures reflect cumulative reporting volume — not per-patient risk — so older, widely dispensed drugs typically look worse on count alone. No direct interaction between these two drugs is listed in our FDA-derived dataset, though co-prescription still warrants pharmacist review. 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 fesoterodine and trospium — 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.