Myrbetriq vs. Toviaz

Are Myrbetriq and Toviaz the Same Thing?

Myrbetriq (mirabegron) and Toviaz (fesoterodine fumarate) are used to treat overactive bladder (OAB) with symptoms of urge urinary incontinence, urgency, and urinary frequency.

Myrbetriq and Toviaz belong to different drug classes. Myrbetriq is a beta-3 adrenergic agonist and Toviaz is a muscarinic receptor antagonist.

Side effects of Myrbetriq and Toviaz that are similar include dry mouth, constipation, dizziness, blurred vision, or stomach pain or upset.

Side effects of Myrbetriq that are different from Toviaz include increased blood pressure, inability to fully empty the bladder (urinary retention), sinus pain, sore throat, diarrhea, bloating, memory issues, headache, joint pain, tired feeling, or nausea.

Side effects of Toviaz that are different from Myrbetriq include dry eyes, drowsiness, cough, dry throat, back pain, or sleep problems (insomnia).

Myrbetriq may interact with metoprolol, desipramine, or digoxin.

Toviaz may interact with arsenic trioxide, conivaptan, antibiotics, antifungals, antidepressants, anti-malaria medications, heart rhythm medicines, HIV/AIDS medicines, medicine to prevent or treat nausea and vomiting, medicines to treat psychiatric disorders, migraine headache medicines, or narcotics.

What Are Possible Side Effects of Myrbetriq?

Common side effects of Myrbetriq include:

  • drowsiness,
  • dizziness,
  • constipation,
  • nausea,
  • vomiting,
  • loss of appetite,
  • dry mouth, or
  • warmth or redness under the skin.

Tell your doctor if you have any serious side effects of Myrbetriq including:

  • increased blood pressure,
  • the inability to fully empty the bladder (urinary retention),
  • sinus pain,
  • dry mouth,
  • sore throat,
  • diarrhea,
  • constipation,
  • bloating,
  • memory issues,
  • headache,
  • joint pain,
  • dizziness,
  • blurred vision,
  • tired feeling,
  • stomach pain and,
  • nausea.

Tell your doctor if you experience serious side effects of Myrbetriq including

What Are Possible Side Effects of Toviaz?

Common side effects of Toviaz include:

  • dry mouth,
  • dry eyes,
  • constipation,
  • dizziness,
  • drowsiness,
  • blurred vision,
  • stomach pain or upset,
  • cough,
  • dry throat,
  • back pain, or
  • sleep problems (insomnia).

Tell your doctor if you have unlikely but serious side effects of Toviaz including:

What Is Myrbetriq?

Myrbetriq (mirabegron) is a beta-3 adrenergic agonist used to treat overactive bladder (OAB) with symptoms of urge urinary incontinence, urgency, and urinary frequency.

What Is Toviaz?

Toviaz (fesoterodine fumarate) is a muscarinic receptor antagonist, which reduces spasms of the bladder muscles, used to treat overactive bladder with symptoms of urinary frequency, urgency, and incontinence.

SLIDESHOW

Urinary Incontinence in Women: Types, Causes, and Treatments for Bladder Control See Slideshow

What Drugs Interact With Myrbetriq?

Myrbetriq may interact with metoprolol, desipramine, or digoxin.

What Drugs Interact With Toviaz?

Toviaz may interact with arsenic trioxide, conivaptan, antibiotics, antifungals, antidepressants, anti-malaria medications, heart rhythm medicines, HIV/AIDS medicines, medicine to prevent or treat nausea and vomiting, medicines to treat psychiatric disorders, migraine headache medicines, or narcotics. Tell your doctor all medications you use. During pregnancy, Toviaz should be used only when prescribed. It is unknown if this drug passes into breast milk and the effect on a nursing infant is unknown. Consult your doctor before breastfeeding.

How Should Myrbetriq Be Taken?

Myrbetriq is available as a 10 mg tablet and a solution (30 mg per ml) for intravenous (IV) or intramuscular (IM) administration. Myrbetriq solution is administered as a single 15- to 60-mg dose once every 6 hours not to exceed 60 or 120 mg a day. The recommended oral dose is one to two Myrbetriq tablets initially followed by one tablet every 4-6 hours, not to exceed 40 mg daily. Myrbetriq should not be used for more than 5 days.

How Should Toviaz Be Taken?

The recommended starting dose of Toviaz is 4 mg once daily. Based upon individual response and tolerability, the dose may be increased to 8 mg once daily.

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References

Astellas Pharma US, Inc. Myrbetriq Product Information.
https://www.myrbetriq.com
Pfizer. Toviaz Product Information.
https://www.toviaz.com/

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