Medication Guide App

Myrbetriq Side Effects

Generic Name: mirabegron

Note: This page contains side effects data for the generic drug mirabegron. It is possible that some of the dosage forms included below may not apply to the brand name Myrbetriq.

It is possible that some side effects of Myrbetriq may not have been reported. These can be reported to the FDA here. Always consult a healthcare professional for medical advice.

For the Consumer

Applies to mirabegron: oral tablet extended release

As well as its needed effects, mirabegron (the active ingredient contained in Myrbetriq) may cause unwanted side effects that require medical attention.

If any of the following side effects occur while taking mirabegron, check with your doctor immediately:

More common
  • Bladder pain
  • bloody or cloudy urine
  • blurred vision
  • difficult, burning, or painful urination
  • dizziness
  • frequent urge to urinate
  • headache
  • lower back or side pain
  • nervousness
  • pounding in the ears
  • slow, fast, or irregular heartbeat
  • Blindness
  • decrease in vision
  • eye pain
  • lower abdominal or stomach pain
  • nausea or vomiting
  • pain in the groin or genitals
  • tearing or eyes
Incidence not known
  • Blistering, peeling, or loosening of the skin
  • chills
  • cough
  • decrease in the frequency of urination
  • decrease in urine volume
  • diarrhea
  • difficulty in passing urine (dribbling)
  • itching
  • joint or muscle pain
  • red skin lesions, often with a purple center
  • red, irritated eyes
  • sore throat
  • sores, ulcers, or white spots in the mouth or on the lips
  • unusual tiredness or weakness

Some mirabegron side effects may not need any medical attention. As your body gets used to the medicine these side effects may disappear. Your health care professional may be able to help you prevent or reduce these side effects, but do check with them if any of the following side effects continue, or if you are concerned about them:

Less common
  • Abdominal or stomach pain
  • back pain
  • body aches or pain
  • difficulty having a bowel movement (stool)
  • difficulty with breathing
  • difficulty with moving
  • dry mouth
  • ear congestion
  • fever
  • loss of voice
  • muscle aches
  • muscle stiffness
  • sneezing
  • stuffy or runny nose
  • Acid or sour stomach
  • belching
  • burning feeling in the chest or stomach
  • full or bloated feeling
  • heartburn
  • hives or welts
  • indigestion
  • itching
  • itching or pain of the vagina or genital area
  • pain or tenderness around the eyes and cheekbones
  • pressure in the stomach
  • redness of the skin
  • shortness of breath or troubled breathing
  • skin rash
  • stomach discomfort or upset
  • swelling of the lips
  • tenderness in the stomach area
  • thick, white vaginal discharge with mild or no odor

For Healthcare Professionals

Applies to mirabegron: oral tablet extended release


Cardiovascular side effects have included atrial fibrillation (0.2%), hypertension (up to 11.3%), tachycardia (up to 1.6%), and palpitations (less than 1%).


Dermatologic side effects occurring in less than 1% of patients have included urticaria, leukocytoclastic vasculitis, rash, pruritus, purpura, and lip edema.


Gastrointestinal side effects have included constipation (up to 1.6%), diarrhea (up to 1.5%), abdominal pain (up to 1.4%), nausea (less than 1%), dyspepsia (less than 1%), gastritis (less than 1%), and abdominal distension (less than 1%).


Genitourinary side effects have included urinary tract infection (up to 4.2%), nephrolithiasis (less than 1%), and bladder pain (less than 1%). Genitourinary side effects reported postmarketing have included urinary retention.


Musculoskeletal side effects have included arthralgia (up to 1.6%),

Nervous system

Nervous system side effects have included headache (up to 3.2%), fatigue (up to 1.4%), and dizziness (less than 1%).


Ocular side effects have included glaucoma (less than 1%), blurred vision (0.4%), and dry eyes (0.4%).


Oncologic side effects have included prostate cancer (0.1%).


Other side effects occurring in less than 1% of patients have included GGT increased, AST increased, ALT increased, LDH increased, vulvovaginal pruritus, and vaginal infection.


Respiratory side effects have included nasopharyngitis (up to 3.9%), upper respiratory tract infection (up to 2.1%), sinusitis (less than 1%), and rhinitis (less than 1%).

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