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What is Myrbetriq and what does it treat?

Myrbetriq (mirabegron) is a urinary antispasmodic approved to treat adults with overactive bladder (OAB). This medication relaxes the muscles in the bladder, which helps to reduce bladder spasms. Mirabegron can improve symptoms such as urgent urination and incontinence. In children with neurogenic detrusor overactivity (NDO), Myrbetriq may also be used. In children, Myrbetriq tablets may only be used for those at least three years old. Mirabegron is known to cause a condition called angioedema, which causes swelling and can be fatal. Speak with your doctor to ensure this medication is right for you before starting treatment.

Refer to the medication guide and instructions included in the packaging
Always follow your doctor’s directions

  • Swallow the tablet whole with a glass of water. Do not crush or chew mirabegron
  • Adults may take mirabegron with or without food, but children should always take the tablet with food
  • Monitor blood pressure often
  • Inform your doctor if symptoms do not improve
  • Store at room temperature away from moisture and heat


Do not use Myrbetriq if you have:

  • Severe renal failure or kidney disease
  • High blood pressure that causes symptoms such as severe chest pain, headache, seizures, or shortness of breath

Before taking Myrbetriq (mirabegron), inform your doctor if you are affected by:

  • High blood pressure
  • Bladder obstruction
  • Trouble emptying your bladder
  • Kidney disease
  • Liver disease

Side Effects

Common side effects of Myrbetriq (mirabegron) include:

  • Sinus pain
  • Increased blood pressure
  • Headache
  • Constipation
  • Painful urination
  • Fast heartbeats
  • Sore throat
  • Dry mouth

Myrbetriq may cause severe side effects that require medical assistance. Severe side effects of mirabegron may include.

  • Blurred vision
  • Severe headache
  • Pounding feeling behind the neck and ears
  • Symptoms of a hypertensive crisis (nausea, vomiting, anxiety, chest pain)
  • Pain or burning during urination


What is Myrbetriq used for?

Myrbetriq is used to relax the muscles in the urinary bladder in order to reduce bladder spasms and symptoms such as urgent urination and incontinence. Myrbetriq is also indicated for neurogenic detrusor overactivity in children at least 3 years old.

How long does Myrbetriq stay in your system?

After stopping Myrbetriq, it takes about 10 days for adults and 5 to 6 days for children for the drug to be fully removed from the body. Make sure you talk to your doctor before stopping this medication, since stopping without your doctor’s recommendation may cause symptoms to return.

When will Myrbetriq start to work?

Myrbetriq will begin to relax the muscles surrounding the bladder within 3 to 4 hours. Because this is a long-term treatment medication, it may not be until 4 to 8 weeks into your treatment that you begin to notice significant improvements to your symptoms.

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