Percent of patients with adverse reactions derived from all adverse events, exceeding placebo rate and reported by ≥1% of patients treated with Myrbetriq 25 mg or 50 mg once daily in Studies 1, 2, and 31
aIncludes reports of blood pressure (BP) above the normal range and BP increased from baseline, occurring predominantly in subjects with baseline hypertension.
Myrbetriq was evaluated in three 12‑week, double‑blind, randomized, placebo‑controlled, parallel‑group, multicenter clinical trials in patients with OAB.1
Percent of patients with adverse reactions derived from all adverse events, reported by >2% of patients treated with Myrbetriq 50 mg once daily in the 1 year safety study1
bThe active control in this study was tolterodine extended-release (ER) 4 mg.2
Myrbetriq was evaluated in a 1-year, randomized, fixed‑dose, double‑blind, active‑controlled study1
Percent of patients with adverse reactions derived from all adverse events, exceeding placebo rate and reported by ≥1% of patients treated with Myrbetriq 25 mg or 50 mg once daily in Studies 1, 2, and 31
aIncludes reports of blood pressure (BP) above the normal range and BP increased from baseline, occurring predominantly in subjects with baseline hypertension.
Myrbetriq was evaluated in three 12‑week, double‑blind, randomized, placebo‑controlled, parallel‑group, multicenter clinical trials in patients with OAB.1
Percent of patients with adverse reactions derived from all adverse events, reported by >2% of patients treated with Myrbetriq 50 mg once daily in the 1 year safety study1
bThe active control in this study was tolterodine extended-release (ER) 4 mg.2
Myrbetriq was evaluated in a 1‑year, randomized, fixed‑dose, double‑blind, active‑controlled study1
Dr. Christopher R. Chapple discusses the results of a 1‑year study examining the safety
profile of Myrbetriq.
Percent of patients ≥65 and ≥75 years of age with adverse reactions derived from all adverse events, exceeding placebo rate and reported by ≥3% of patients in any treatment group in the ≥65 year subgroup4
Pre-specified subgroup analysis in patients ≥65 years (n=1674 of 4427) and ≥75 years (n=478 of 4427) of age3
Percent of patients ≥65 and ≥75 years of age with adverse reactions derived from all adverse events, exceeding placebo rate and reported by ≥3% of patients in any treatment group in the ≥65 year subgroup4
Pre-specified subgroup analysis in patients ≥65 years (n=1674 of 4427) and ≥75 years (n=478 of 4427) of age
Percent of patients ≥65 and ≥75 years of age with adverse reactions derived from all adverse events, exceeding placebo rate and reported by ≥3% of patients in any treatment group in the ≥65 year subgroup4
Pre-specified subgroup analysis in patients ≥65 years (n=1674 of 4427) and ≥75 years (n=478 of 4427) of age3
Pre-specified subgroup analysis in patients ≥65 years (n=1674 of 4427) and ≥75 years (n=478 of 4427) of age
Percent of patients ≥65 and ≥75 years of age with adverse reactions derived from all adverse events, exceeding placebo rate and reported by ≥3% of patients in any treatment group in the ≥65 year subgroup4
No overall differences in safety or effectiveness were observed between patients <65 years and those ≥65 years of age in the Phase II and III studies of Myrbetriq.1 The pharmacokinetics of Myrbetriq were similar in elderly and adult volunteers.1
Percent of patients with treatment-emergent adverse events (TEAEs)* who received ≥1 dose of study medication
*Treatment-emergent adverse event (TEAE) is defined as an adverse event which started or worsened in the period from first double-blind medication intake until 30 days after the last double-blind medication intake.
†Possible or probable, as assessed by the investigator, or where relationship was missing.
‡Preferred term; affecting ≥2% of any treatment group.
§Escherichia urinary tract infection, streptococcal urinary tract infection, urinary tract infection, or bacterial urinary tract infection.
MYRBETRIQ® (mirabegron extended-release tablets), either alone or in combination with the muscarinic antagonist solifenacin succinate, is indicated for the treatment of overactive bladder (OAB) in adult patients with symptoms of urge urinary incontinence, urgency, and urinary frequency.
MYRBETRIQ is contraindicated in patients with known hypersensitivity reactions to mirabegron or any inactive ingredients of the tablet.
MYRBETRIQ monotherapy or in combination with solifenacin succinate can increase blood pressure in adults. Periodic blood pressure determinations are recommended, especially in hypertensive patients. MYRBETRIQ is not recommended for use in patients with severe uncontrolled hypertension (defined as systolic blood pressure ≥ 180mm Hg and/or diastolic blood pressure ≥ 110mm Hg). Worsening of pre-existing hypertension was reported infrequently in patients taking MYRBETRIQ.
In patients taking MYRBETRIQ, urinary retention has been reported in patients with bladder outlet obstruction (BOO) and in patients taking muscarinic antagonist medications for the treatment of OAB. A controlled clinical safety study in patients with BOO did not demonstrate increased urinary retention in patients treated with mirabegron; however, MYRBETRIQ should still be administered with caution to patients with clinically significant BOO. For example, monitor these patients for signs and symptoms of urinary retention. MYRBETRIQ should also be administered with caution to patients taking muscarinic antagonist medications for the treatment of OAB, including solifenacin succinate.
Angioedema of the face, lips, tongue and/or larynx has been reported with MYRBETRIQ. In some cases, angioedema occurred after the first dose. Cases have been reported to occur hours after the first dose or after multiple doses. Angioedema, associated with upper airway swelling, may be life threatening. If involvement of the tongue, hypopharynx, or larynx occurs, promptly discontinue MYRBETRIQ and initiate appropriate therapy and/or measures necessary to ensure a patent airway.
Since MYRBETRIQ is a moderate CYP2D6 inhibitor, the systemic exposure to CYP2D6 substrates is increased when co‐administered with MYRBETRIQ. Therefore, appropriate monitoring and dose adjustment may be necessary, especially with narrow therapeutic index drugs metabolized by CYP2D6.
In clinical trials, the most commonly reported adverse reactions in adults (> 2% and > placebo) for MYRBETRIQ 25mg and 50mg versus placebo, respectively, were hypertension (11.3%, 7.5% vs. 7.6%), nasopharyngitis (3.5%, 3.9% vs. 2.5%), urinary tract infection (4.2%, 2.9% vs. 1.8%), and headache (2.1%, 3.2% vs. 3.0%).
In clinical trials, the most commonly reported adverse reactions in adults (> 2% and > placebo and > comparator) for MYRBETRIQ in combination with solifenacin succinate 25mg + 5mg and 50mg + 5mg versus MYRBETRIQ 25mg, MYRBETRIQ 50mg, solifenacin succinate 5mg, and placebo, respectively, were dry mouth (9.3%, 7.2% vs. 3.8%, 3.6%, 6.5%, 2.2%), urinary tract infection (7.0%, 4.0% vs. 4.0%, 4.2%, 3.6%, 5.3%), constipation (4.2%, 3.9% vs. 1.2%, 2.8%, 2.4%, 1.2%), and tachycardia (2.2%, 0.9% vs. 1.6%, 1.6%, 0.7%, 0.8%).
In postmarketing experience with mirabegron, the following events have also occurred: atrial fibrillation, nausea, diarrhea, and dizziness.
Please refer to prescribing information for solifenacin succinate when prescribing MYRBETRIQ in combination with solifenacin succinate.
1. Myrbetriq [package insert]. Northbrook, IL: Astellas Pharma US, Inc. 2. Chapple CR, Kaplan SA, Mitcheson D, et al. Randomized double-blind, active-controlled phase 3 study to assess 12-month safety and efficacy of mirabegron, a β3-adrenoceptor agonist, in overactive bladder. Eur Urol 2013;63(2):296-305. 3. Astellas. Myrbetriq. Data on File. 4. Wagg A, Cardozo L, Nitti VW, et al. The efficacy and tolerability of the β3-adrenoceptor agonist mirabegron for the treatment of symptoms of overactive bladder in older patients. Age Ageing 2014;43(5):666-75. 5. Wagg A, Staskin D, Engel E, Herschorn S, Kristy RM, Schermer CR. Efficacy, safety, and tolerability of mirabegron in patients aged ≥65yr with overactive bladder wet: a phase IV, double-blind, randomised, placebo-controlled study (PILLAR). Eur Urol 2020;77(2):211-20.