Tolterodine
Prescription ·Exploratory record · not publication-reviewed ·Updated July 13, 2026
Tolterodine is an antimuscarinic used for overactive bladder with urgency, frequency, and urge incontinence. It reduces detrusor overactivity but can cause dry mouth, constipation, urinary retention, blurred vision, cognitive effects in susceptible patients, and QT concerns in patients with risk factors or interacting drugs.
Exploratory record, not a reviewed medical publication.
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This generated database record has not completed a claim-level review by a qualified human medical reviewer. Bibliography links and evidence labels are not approval. The page remains available for reference and is excluded from search indexing.
What the research says.
A quick, data-only summary. The full evidence, dosing, and sources are below.
Tolterodine is an antimuscarinic used for overactive bladder with urgency, frequency, and urge incontinence. NutriStack rates the supporting evidence as strong. Common adult dosing is Immediate-release: 2 mg orally twice daily; reduce to 1 mg twice daily for tolerability, significant hepatic impairment, severe renal impairment, or potent CYP3A4 inhibitors. Extended-release: 4 mg once daily; reduce to 2 mg once daily in those situations., though a prescriber sets the actual dose. This profile indexes 3 sources.
The bottom line
Evidence rating strong. Most-documented uses: reduced urinary urgency, reduced urinary frequency, reduced urge incontinence. 3 sources indexed (2001–2026), with 0 interaction records on file.
How it works, mechanistically.
Core mechanism
Tolterodine and its active 5-hydroxymethyl metabolite competitively antagonize muscarinic receptors in the bladder. Reduced acetylcholine-mediated detrusor contraction increases bladder capacity and decreases urgency. Metabolism depends on CYP2D6 and CYP3A4, so poor metabolizer status and potent CYP3A4 inhibitors can increase exposure.1,3
Dosing & protocol.
May be taken with or without food. Swallow extended-release capsules whole.3
Full safety detail.
Side effects
- Dry mouth
- Constipation
- Headache
- Dizziness
- Blurred vision
- Dyspepsia
- Somnolence
- Urinary retention
- Confusion in susceptible patients
- QT prolongation risk in selected patients
Contraindications
Sources, by evidence tier.
Numbered references. Citations throughout the page link here.
Randomized controlled trials
1- 1Tolterodine extended release for the treatment of overactive bladderVan Kerrebroeck P et al. · Urology · 2001
Trials showed reduced incontinence and micturition frequency with once-daily tolterodine ER.
Reviews & position papers
1- 2AUA/SUFU Guideline on the Diagnosis and Treatment of Idiopathic Overactive BladderAmerican Urological Association · AUA Guideline · 2024
Guideline recommends shared decision-making and monitoring of antimuscarinic adverse effects.
Reference material
1- 3Tolterodine Tartrate Extended-Release Capsules US Prescribing InformationURLU.S. National Library of Medicine · DailyMed · 2026
Labeling describes 4 mg extended-release dosing, lower-dose situations, contraindications, QT warning, and potent CYP3A4 inhibitor precautions.
Common questions.
Quick answers about Tolterodine, drawn from the data on this page.
What is Tolterodine?
Tolterodine is an antimuscarinic used for overactive bladder with urgency, frequency, and urge incontinence. It reduces detrusor overactivity but can cause dry mouth, constipation, urinary retention, blurred vision, cognitive effects in susceptible patients, and QT concerns in patients with risk factors or interacting drugs.
What is Tolterodine used for?
Commonly cited benefits of Tolterodine include: Reduced urinary urgency; Reduced urinary frequency; Reduced urge incontinence; Improved overactive bladder symptom burden. NutriStack rates the overall evidence as strong.
What is a typical dose of Tolterodine?
A typical adult dose of Tolterodine is Immediate-release: 2 mg orally twice daily; reduce to 1 mg twice daily for tolerability, significant hepatic impairment, severe renal impairment, or potent CYP3A4 inhibitors. Extended-release: 4 mg once daily; reduce to 2 mg once daily in those situations.. The commonly recommended form is Immediate-release tablet twice daily or extended-release capsule once daily. These are general ranges, not personalized advice; confirm the right dose with a clinician.
What are the side effects of Tolterodine?
Reported side effects include dry mouth, constipation, headache, dizziness, blurred vision, dyspepsia. This is educational information; check with a healthcare professional before use.
How strong is the evidence for Tolterodine?
NutriStack rates this as Strong, meaning multiple high-quality meta-analyses or systematic reviews converge on the same finding. Full tier criteria are at https://nutristackapp.com/methodology/evidence-tiers.
Use this with your stack
Tolterodine in NutriStack.
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