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Medicine details

Conditions: Overactive Bladder
Alternative names: Kentera
Therapeutic class: Antispasmodic
Pharmacological class: Anticholinergic
Minor side effects: application site erythema; dry mouth; constipation; pruritus
Moderate side effects: somnolence; blurred vision; nausea; dry eyes
Dosage forms: Transdermal patch
Administration route: Transdermal use
Patient summary: Intended to manage overactive bladder symptoms to support bladder function.
Prescription status: POM
Onset Time: 2–4 hours
Duration: 3–4 days (per patch)
Storage instructions: Store in original packaging at room temperature.
Drug interactions: other anticholinergics; potassium
Age restrictions: Not recommended for children.

Contraindications

urinary retention; gastric retention; uncontrolled angle-closure glaucoma; myasthenia gravis

Precautions and warnings

avoid prolonged sun exposure; keep the site dry before application; may impair cognitive function in elderly

Serious side effects

anaphylaxis — requires immediate medical attention; urinary retention — requires immediate medical attention

Mechanism of action

Inhibits acetylcholine binding at muscarinic receptors, relaxing bladder smooth muscle to reduce involuntary contractions and urgency.

Pregnancy and breastfeeding

Pregnancy: Use only if potential benefit justifies risk. Breastfeeding: Avoid use.

Intended to manage overactive bladder symptoms to support bladder function.