1 What is Myrbetriq?

Brand: Myrbetriq

Generic: Mirabegron

Myrbetriq is a prescription drug used in treating the symptoms of an overactive bladder, such as incontinence. The drug affects the muscles of the bladder, preventing them from losing control and causing incontinence.

2 What to Know Before Using

If you are about to start using Myrbetriq, speak with your doctor about what you need to know. The risks and benefits the medicine offer must be weighed. For mirabegron, you and your doctor must consider the following:


If you have any unusual reaction to any medicine, be sure to tell your doctor about it. Additionally, disclose other types of allergies - foods, preservatives, animals, or dyes, if there are any. Read the package ingredients carefully and make sure you are not allergic to any of its ingredients.


There are no appropriate studies performed to establish safety and efficacy of the use of this drug in children.


Studies show that using this drug in the elderly does not affect its effectiveness or performance.


It is not sure if there are adequate studies done in pregnant women or if animal studies showing adverse effects are available.


Although there are no adequate studies in lactating mothers that determine potential risk in an infant when breastfeeding, the benefits should be weighed against the risks before taking this medication.

Drug Interactions:

Some drugs have adverse effects when used together. Make sure to inform your doctor about other drugs you are taking, so that alterations and precautions will be made if necessary.

Before using mirabegron, talk to your doctor about possible interactions if you are taking other medications. It is also important to inform your doctor if you are smoking tobacco or drinking alcohol since these may interact with the drug’s effectiveness. Inform your doctor about any drug you are using.

Prescription or nonprescription, especially the following drugs:

Other Medical Problems. If you have other health problems, how you use this medicine may be affected. Dosage adjustments or your doctor may not allow you to use mirabegron if you have a certain health condition, especially hypertension (or history of), bladder blockage, and kidney or liver disease.

3 Proper Usage

To use Myrbetriq properly, you must follow all instructions given by your doctor. The dose of mirabegron depends on the patient's age, weight, and symptoms, as well as the strength of the medicine. Do not change the dosage the doctor indicated unless he or she told you otherwise.

The number of doses and the number of hours between doses generally depend on the reason why you are taking mirabegron. Do not break, crush, or chew the extended-release tablet; take it whole and with water. Generally, dosage will be as follows:

In adults with bladder problems, 25 milligrams once a day may be initially prescribed by your doctor. Dosage adjustment will be done by your doctor as needed. The maximum intake of mirabegron is 50 mg a day.

Missed dose:

Take the missed dose as soon as possible. In case it is almost time for the next dose, skip the missed one and follow your regular dosing schedule. Never take double doses.


Keep the medicine in an airtight container at normal room temperature. Keep it away from direct light, heat, and moisture. Do not let it freeze. Keep the medicine out of children’s reach. Throw away any outdated medicine or medicine that are not in use

4 Precautions to Take

Before using Myrbetriq, there are some precautions you must take. Regular visits to your doctor are important to check your progress and see if the medicine is working properly or has any unwanted effects. Myrbetriq may increase the blood pressure, so frequent monitoring is advised.

Call your doctor immediately if you see any change in your blood pressure. Talk to your doctor before taking any other medicine, including prescription and OTC drugs, and vitamin or herbal supplements.

5 Potential Side Effects

While not all people taking Myrbetriq may suffer from these side effects,you may need to call your doctor if any of these are present:

  • Bloody or cloudy urine
  • Difficult, burning, or painful urination
  • Pounding in the ears
  • Bladder pain
  • Lower back or side pain
  • Lower abdominal or stomach pain
  • Pain in the groin or genitals
  • Blurred vision
  • Dizziness frequent urge to urinate
  • Headache
  • Nervousness
  • Slow, fast, or irregular heartbeat
  • Decrease in vision
  • Blindness
  • Eye pain
  • Nausea or vomiting
  • Tearing or eyes
  • Chills
  • Diarrhea
  • Blistering, peeling or loosening of the skin
  • Itching
  • Cough
  • Decrease in urine volume
  • Decrease in the frequency of urination
  • Difficulty in passing urine (dribbling)
  • Red skin lesions
  • Joint or muscle pain
  • Sore throat
  • Irritated eyes
  • Mouth sores or ulcers
  • Unusual tiredness or weakness

While most of these side effects usually diminish as the body adjusts to the drug, calling your doctor may be needed. Some patients may experience side effects not listed above. If you want to report side effects, you may do so by calling the FDA at 1-800-FDA-1088.

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