Myrbetriq (Mirabegron) is a prescription medication for adults used to treat certain bladder problems (overactive bladder, neurogenic detrusor overactivity). Mirabegron is a beta-3-adrenergic receptor agonist, an alternative OAB treatment to antimuscarinics. It works by relaxing the bladder muscle (detrusor), which helps the bladder hold more urine and reduces symptoms of an overactive bladder. Other alternative drugs include Vesicare, Ditropan, Toviaz.

In a study (A Prospective, Randomized, Placebo-Controlled Pilot Study of Mirabegron (Myrbetriq) and Behavioral Modification for Overactive Bladder in Parkinson Disease (908), April 14, 2020), P Agarwal, T Brown, S Ray, A Madan, I Roy-Faderman, found that “Mirabegron was safe and well-tolerated in this PD (Parkinson disease) population.”

In another clinical trial (STOMp: sexual function trial of overactive bladder medication, January 12, 2023), Allison Polland, MD, found that “Female sexual function has been shown to improve with overactive bladder (OAB) treatment”.

Manufacturer Information

The brand Myrbetriq, manufactured by Astellas Pharma, is available in Canada, Turkey, and the United Kingdom. It is available in strengths of 25 mg and 50 mg. Generic Mirabegron is manufactured in India by Sun Pharma and is also known as Mirago. We also supply in different quantities; please call our toll-free number at 1.877.745.9217 for more details.
• Betanis (Commonly used in Japan and other Asian markets)
• Betmiga (The primary brand name used in Europe, Canada, and the United Kingdom)
• Mirabegron (The global generic name for the active ingredient)
• Myrbetriq (The primary brand name used in the United States and Canada)
• Myrbetriq Granules (A specific formulation for pediatric patients or those who have difficulty swallowing tablets)

Contact your doctor if you experience these common side effects of Myrbetriq and they are severe or bothersome.
• Cold symptoms (including nasopharyngitis, sore throat, or stuffy nose)
• Headache
• High blood pressure (Hypertension)
• Urinary tract infection (UTI)

Less Common Side Effects
• Abdominal pain
• Back pain
• Blurred vision
• Constipation
• Diarrhea
• Dizziness
• Dry mouth (significantly less common than with other OAB drugs)
• Fatigue
• Fast or irregular heartbeat (Tachycardia or palpitations)
• Joint pain (Arthralgia)
• Nausea
• Sinusitis

Stop taking the medication and see your doctor immediately if any of the following occur:
• Allergic reaction/Angioedema (signs include severe swelling of the face, lips, tongue, or throat, and difficulty breathing or swallowing)
• Atrial fibrillation (an irregular, often rapid, heart rhythm)
• Severe hypertension (dangerously high blood pressure)
• Urinary retention (inability to empty the bladder or a very weak urine stream)

Before taking Myrbetriq, consult your doctor to ensure your blood pressure is well-controlled and within a safe range. Do not use Myrbetriq if you have severe, uncontrolled hypertension (systolic blood pressure = 180 mmHg or diastolic blood pressure =110 mmHg), as this medication can further increase blood pressure to dangerous levels. Periodic monitoring of blood pressure is essential, as elevated readings can increase cardiovascular and stroke risk. There may be interactions between mirabegron and other medications, including desipramine, digoxin, flecainide, metoprolol, propafenone, thioridazine, and warfarin. Consult your physician if you are taking any of these medications.

Dietary and Lifestyle Factors

While Myrbetriq can be taken with or without food, you should take it with a full glass of water at the same time each day to maintain consistent drug levels. You should avoid excessive caffeine consumption, as caffeine is a known bladder irritant that can exacerbate the symptoms of urgency and frequency you are trying to treat. Additionally, limit alcohol consumption; alcohol acts as a diuretic and can interfere with bladder control, potentially reducing the effectiveness of the medication. For the best results, maintain a bladder-healthy lifestyle, as recent 2025 research indicates that combining pharmacological treatment with pelvic floor exercises and timed voiding yields the most significant systemic improvement in overactive bladder symptoms.

• Where can I buy Myrbetriq online?
You can buy Myrbetriq online from our certified Canadian Pharmacy, or by email (CustomerService@canadianpharmacyking.com), by phone (1-877-745-9217), or by fax or mail.

• Is Myrbetriq available in generic form?
We carry a range of generic Myrbetriq from different countries, including Australia, Canada, India, and the United Kingdom.

• Do I need a prescription to buy Myrbetriq?
A prescription is required to purchase Myrbetriq from a CIPA-verified Canadian pharmacy.

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