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What is Myrbetriq (mirabegron)?

Myrbetriq is an overactive bladder medication used to improve symptoms such as urinary incontinence and frequent or urgent urination. The main active ingredient in Myrbetriq is mirabegron, which belongs to the drug class urinary antispasmodics. This medication can be used alone, but it is often combined with solifenacin succinate. In addition to overactive bladder, Myrbetriq is also indicated for treating neurogenic detrusor overactivity in children three and up.

Use Myrbetriq exactly as instructed by your doctor
Follow all directions and the medication pamphlet included with Myrbetriq

  • Take mirabegron with a full glass of water
  • Do not crush, chew, or break the tablet
  • You can take mirabegron with or without food
  • Children should take mirabegron with food
  • Check-in with your doctor periodically. Mirabegron may cause changes to blood pressure
  • Tell your doctor if symptoms do not improve after the prescribed treatment period
  • Store safely away from heat, moisture, and the reach of children or pets


Myrbetriq may not be suitable for you if you have:

  • End-stage kidney failure
  • Hypertensive crisis (blood pressure of 180/120 mmHg or higher)

Before taking Myrbetriq, it is important to inform your doctor of your medical history. The following conditions may mean Myrbetriq is not suitable for you.

  • Hypertension (high blood pressure)
  • Kidney or liver disease
  • Bladder outlet obstruction (BOO) indicated by a pain in your lower abdomen, back, or sides

Side Effects of Myrbetriq

Some of the common side effects of mirabegron are:

  • Dry mouth
  • Pain during urination
  • Increased blood pressure
  • Constipation
  • Tachycardia (fast heartbeats)
  • Inflammation and pain in the sinuses
  • Sore throat and headache

Call your doctor right away if you experience severe side effects, including:

  • Painful or burning sensations during urination
  • Symptoms of extreme high blood pressure, such as blurred vision and a pounding in the neck or ears


How long does it take for Myrbetriq to work?

This medication usually begins to work within three to four hours. After taking Myrbetriq, the muscles in the bladder will begin to relax. Still, mirabegron is typically used for the long-term management of overactive bladder, so you may not see significant improvements in symptoms until four to eight weeks into your treatment period. Continue checking in with your healthcare provider, informing your doctor if symptoms do not improve or worsen.

What is Myrbetriq prescribed for?

Myrbetriq (mirabegron) is approved for two primary uses. First, Myrbetriq may be used to treat symptoms of overactive bladder (OAB). This drug relaxes the muscles surrounding the bladder to alleviate spasms and incontinence. The second indication for mirabegron is for treating neurogenic detrusor overactivity in children. However, this drug is not approved for use in children under the age of 3. Special cases may occur, so talk to your doctor to ensure Myrbetriq is right for you or your child.

How long does mirabegron stay in your system?

Myrbetriq is a long-term treatment, so you should not stop taking this drug without first notifying your physician. Mirabegron stays in an adult’s system for around 10 days, but it may clear out of a child’s body within six. Make sure you are approved to stop taking mirabegron before doing so to avoid symptoms coming back.

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