Lyng Pharmacy
Medicines A–Z · Antimuscarinic (bladder)

Solifenacin

For an overactive bladder · Written by the Lyng Pharmacy team, based on NHS and BNF guidance · Updated August 2026
Also sold asVesicare
Type of medicineAntimuscarinic (bladder)
Available asTablets, oral suspension
How you get itPrescription only

Solifenacin relaxes the bladder muscle, reducing urgency, frequency and urge incontinence. It works, and its side effects follow directly from how it works — the same mechanism that calms the bladder also dries the mouth and slows the bowel.

How to take it

Once daily, with or without food, swallowed whole with water.

Allow four weeks before judging the benefit, and expect the dose may need adjusting.

Bladder training exercises and reducing caffeine and alcohol work alongside it and often make more difference than people expect.

Side effects

Dry mouth, constipation and blurred vision are the common ones. Sipping water, sugar-free gum, and a laxative if needed all help — ask us before constipation becomes a problem.

Contact your doctor for difficulty passing urine or inability to pass urine at all, severe constipation, eye pain or halos around lights, or confusion — particularly in older people, where antimuscarinics can affect cognition.

Who should avoid it

In older adults, the overall burden of antimuscarinic medicines matters — several together increase confusion and fall risk. A medicine review is worth having if you take more than one; we do these free.

Always read the label. This page is general information, not advice for your situation. Doses, warnings and interactions differ between products and between people. Check the leaflet inside your medicine, and ask our pharmacist if anything is unclear — that conversation is free and takes two minutes.

Questions about Solifenacin?

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Frequently asked questions

How long before solifenacin works?
Allow about four weeks, and expect the dose may need adjusting.
Why does solifenacin dry my mouth?
The same mechanism that relaxes the bladder also reduces saliva and slows the bowel. Sipping water and sugar-free gum help.
When should I contact a doctor on solifenacin?
If you cannot pass urine, have severe constipation, eye pain or halos, or become confused — particularly if you are older.
Do bladder exercises still help?
Yes — bladder training and cutting caffeine and alcohol work alongside the tablet and often make more difference than expected.

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