Medicines & Supplements A to Z > Solifenacin


Last updated on 13/07/2021.

Overview   |   Dosage   |    Side Effects   |   Precautions  |   Tips  |   Where To Buy  

GENERIC NAME: Solifenacin



DRUG CLASS: Antispasmodics

SUB CLASS: Anticholinergics

USED FOR: Overactive bladder

– 5mg, 10mg (tablets)

What is Solifenacin for?

Solifenacin belongs to a class of medications called anticholinergics. It works by releasing the bladder muscles to treat overactive bladder. 

How to use it?

Solifenacin is taken orally as tablets. The usual initial dose is 5 mg once daily, and can be increased to 10 mg once daily if tolerated. Swallow whole with a glass of water. Do not crush or chew them.

What are the side effects of Solifenacin?

Common side effects of Solifenacin include blurred vision, constipation, dry mouth, urinary tract infection, and dyspepsia.

Who should not take Solifenacin?

– People who are allergic to Solifenacin or any component of the formulation
– Patients with uncontrolled narrow-angle glaucoma, urinary retention, or gastric retention.

Pharmacist Tips:

– Avoid driving or other activities requiring clear vision until you know how you respond to this drug.
– Be careful in hot weather or while being active because this drug may cause heat exhaustion more easily when used in a hot environment. 

Common dosing schedule:
Solifenacin can be taken with or without food. 

This schedule is for reference only, adjustments may be made according to individual needs.

Some common medications Solifenacin may interact with:
– Anticholinergics, e.g. Ipratropium, Tiotropium
– Potassium, e.g. Potassium chloride, Potassium citrate
– Antibiotics, e.g. Clarithromycin, Erythromycin
– Antifungals, e.g. Itraconazole, Ketoconazole

Please notify your doctor or pharmacist if you are taking the above medication, dosage adjustments might be needed.

Where to buy Solifenacin in Hong Kong?

In Hong Kong, Solifenacin is a prescription only medicine, and requires a prescription from a doctor to be purchased in a pharmacy. It can also be obtained from doctors. To find a pharmacy near you, refer to the list of pharmacies (“Authorized Sellers of Poisons”) from the Hong Kong Department of Health.

For more information about drug names and ingredients, you can visit Hong Kong’s Drug Office at

Need more information?

For detailed information about the use of Solifenacin in children, pregnancy and breastfeeding, and for questions about drug interactions, please check with your pharmacist or doctor.

Disclaimer: our goal is to provide you with the most relevant drug information and common dosage for Hong Kong. This information does not constitute medical advice. For specific treatment recommendations and advice, always discuss with your doctor or pharmacist, and follow the instructions included with your specific medicine.