Medicines & Supplements A to Z > Mirabegron


Last updated on 14/07/2021.

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

GENERIC NAME: Mirabegron



DRUG CLASS: Antispasmodics

SUB CLASS: Beta-3 agonists

USED FOR: Neurogenic bladder disorders, Overactive bladder

AVAILABLE DOSAGE FORMS: 25mg, 50mg (prolonged-release tablets)

What is Mirabegron for?

Mirabegron belongs to a class of medications called beta-3 agonists. It can release the muscle of the bladder during the urine storage phase to increase bladder capacity and reduce urination frequency. It is used to treat neurogenic detrusor overactivity in children and overactive bladder in adults.

How to use it?

Mirabegron is taken orally as prolonged-release tablets. Swallow the tablets whole with a glass of water. Do not crush or chew it.

Listed below are the indications and the dosages, which patients with poor renal or liver function may need a lower dose. 

Overactive bladder in adults (monotherapy):
Initiate 25 mg once daily, and can be increased to 50 mg once daily after 4-8 weeks.

Neurogenic detrusor overactivity in pediatrics patients ≥3 years of age and weighing ≥35 kg:
Initiate 25 mg once daily, and can be increased to 50 mg once daily after 4-8 weeks.

What are the side effects of Mirabegron?

Common side effects of Mirabegron include hypertension, nasopharyngitis, urinary tract infection (UTI), and headache.

Who should not take Mirabegron?

People who are allergic to Mirabegron or any component of the formulation.

Pharmacist Tips:

This drug may increase your blood pressure, so check your blood pressure regularly while you are taking Mirabegron. 

Common dosing schedule:
Adults can take Mirabegron with or without food, while children should take it with food. 

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

Some common medications Mirabegron may interact with:
– Antidepressants, e.g. Fluoxetine, Aripiprazole, Atomoxetine

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

Where to buy Mirabegron in Hong Kong?

In Hong Kong, Mirabegron 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 Mirabegron 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.