myrbetriq
Myrbetriq (Mirabegron) is a beta3-adrenergic agonist used to treat Overactive Urinary Bladder, Urge Urinary Incontinence.
Mirabegron · by Apgdi
Available as a generic: Mirabegron
Key facts
- Active ingredient
- Mirabegron
- Drug class
- Beta3-Adrenergic Agonist
- Form
- Powder, extended release, Tablet, extended release
- Strength
- Mirabegron 25MG · Mirabegron 50MG
- Type
- Prescription (Rx)
- Brand or generic
- Brand-name
- Manufacturer
- Apgdi
- Half-life
- about 50 hours (how long it stays in your system)
- What the pharmacy pays
- ~$288.81 for 30 — not your price
- FDA application
- NDA202611
What is Myrbetriq?
From the FDA label:MYRBETRIQ (mirabegron extended-release tablets) for oral use and MYRBETRIQ Granules (mirabegron for extended-release oral suspension) are beta-3 adrenergic agonists. The chemical name of mirabegron is 2-(2-aminothiazol-4-yl)-N-[4-(2-{[(2R)-2-hydroxy-2-phenylethyl]amino}ethyl)phenyl]acetamide having an empirical formula of C 21 H 24 N 4 O 2 S and a molecular weight of 396.51. The structural formula of mirabegron is: Mirabegron is a white powder. It is practically insoluble in water (0.082 mg/mL). It is soluble in methanol and dimethyl sulfoxide. Each MYRBETRIQ (mirabegron extended-release tablets) for oral use contains either 25 mg or 50 mg of mirabegron and the following inactive ingredients: butylated hydroxytoluene, hydroxypropyl cellulose, hypromellose, magnesium stearate, polyethylene glycol, polyethylene oxide, red ferric oxide (25 mg tablet only), and yellow ferric oxide. Each bottle of MYRBETRIQ Granules (mirabegron for extended-release oral suspension) contains approximately 8.3 g of granules, which contain 830 mg of mirabegron, and the following inactive ingredients: acesulfame potassium, diluted hydrochloric acid, ethylparaben, hypromellose, magnesium stearate, mannitol, methylparaben, silicon dioxide, simethicone, sodium polystyrene sulfonate, and xanthan gum. After reconstituted with 100 mL water, the suspension contains 8 mg/mL of mirabegron. Mirabegron structural…
How to use
Myrbetriq is sold in more than one form (Powder, extended release and Tablet, extended release), and each is dosed differently. The instructions below come from the FDA label for application NDA202611 — follow the label that came with the product you were actually prescribed.
2 DOSAGE AND A DM INISTRATION • MYRBETRIQ and MYRBETRIQ Granules are two different products and they are not substitutable on a milligram-per-milligram basis. Select the recommended product (MYRBETRIQ or MYRBETRIQ Granules) based on the indication and patient’s weight. Do not combine MYRBETRIQ and MYRBETRIQ Granules to achieve the total dose. A recommended dosage for MYRBETRIQ Granules for adults has not been determined. ( 2.1 ) OAB in Adults • The recommended starting dose of MYRBETRIQ is 25 mg orally once daily, either alone or in combination with solifenacin succinate 5 mg orally once daily. ( 2.2 ) • After 4 to 8 weeks, the MYRBETRIQ dose may be increased to 50 mg orally once daily. ( 2.2 ) NDO in Pediatric Patients 3 Years and Older • Pediatric Patients weighing less than 35 kg: Use MYRBETRIQ Granules: The recommended starting dose of MYRBETRIQ Granules is weight-based and administered as an extended-release oral suspension once daily. After 4 to 8 weeks, increase to the lowest effective dose without exceeding the maximum recommended dose. ( 2.3 ) • Pediatric Patients weighing 35 kg or more: Use MYRBETRIQ or MYRBETRIQ Granules: o The recommended starting dosage of MYRBETRIQ is 25 mg orally once daily. After 4 to 8 weeks, the MYRBETRIQ dose may be increased to 50 mg orally once daily. ( 2.3 ) o The recommended starting dosage of MYRBETRIQ Granules, administered as an…
Side effects
The following adverse reactions are discussed in more detail in other sections of the labeling. • Hypertension [see Warnings and Precautions ( 5.1 )] • Urinary Retention [see Warnings and Precautions ( 5.2 )] • Angioedema [see Warnings and Precautions ( 5.3 )] • Most commonly reported adverse reactions with MYRBETRIQ monotherapy in adult patients with OAB (> 2% and > placebo) were hypertension, nasopharyngitis, urinary tract infection, and headache. ( 6.1 ) • Most commonly reported adverse reactions with MYRBETRIQ, in combination with solifenacin succinate in adult patients with OAB (> 2% and > placebo and > comparator), were dry mouth, urinary tract infection, constipation, and tachycardia. ( 6.1 ) • Most commonly reported adverse reactions with MYRBETRIQ/MYRBETRIQ Granules in pediatric patients with NDO (≥ 3%) were UTI, nasopharyngitis, constipation, and headache. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Astellas Pharma US, Inc. at 1-800-727-7003 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in clinical practice. MYRBETRIQ Monotherapy for Adult OAB In three, 12-week, double-blind,…
Warnings
Important safety information
Increases in Blood Pressure : Can increase blood pressure in adult or pediatric patients. Periodically monitor blood pressure, especially in hypertensive patients. MYRBETRIQ/MYRBETRIQ Granules are not recommended in patients with severe uncontrolled hypertension. ( 5.1 ) • Urinary Retention in Patients With Bladder Outlet Obstruction and in Patients Taking Muscarinic Antagonist Drugs for Overactive Bladder : Administer with caution in these patients because of risk of urinary retention. ( 5.2 ) • Angioedema : Angioedema of the face, lips, tongue, and/or larynx has been reported with mirabegron. ( 5.3 , 6.2 ) 5.1 Increases in Blood Pressure Increases in Blood Pressure in Adults MYRBETRIQ/MYRBETRIQ Granules can increase blood pressure. Periodic blood pressure determinations are recommended, especially in hypertensive patients. MYRBETRIQ/MYRBETRIQ Granules is not recommended for use in patients with severe uncontrolled hypertension (defined as systolic blood pressure greater than or equal to 180 mm Hg and/or diastolic blood pressure greater than or equal to 110 mm Hg) [see Clinical Pharmacology ( 12.2 )] . In two, randomized, placebo-controlled, healthy adult volunteer studies, MYRBETRIQ was associated with dose-related increases in supine blood pressure. In these studies, at the maximum recommended dose of 50 mg, the mean maximum increase in systolic/diastolic blood pressure was approximately 3.5/1.5 mm Hg greater than placebo. In contrast, in adult OAB patients in clinical trials, MYRBETRIQ, taken as monotherapy or in combination with solifenacin succinate 5 mg, the mean increase in systolic and diastolic blood pressure at the maximum recommended mirabegron dose of 50 mg was approximately 0.5 to 1 mm Hg greater than placebo. Worsening of pre-existing hypertension was reported infrequently in patients taking MYRBETRIQ. Increases in Blood Pressure in Pediatric Patients 3 Years and Older MYRBETRIQ/MYRBETRIQ Granules can increase blood pressure in pediatric patients. Blood pressure increases may be larger in children (3 to less than 12 years of age) than in adolescents (12 to less than 18 years of age). Periodic blood pressure determinations are recommended. MYRBETRIQ/MYRBETRIQ Granules is not recommended for use in pediatric patients with severe uncontrolled hypertension, defined as a systolic and/or diastolic blood pressure above the 99 th percentile plus 5 mm Hg for age, sex, and stature using appropriate reference values [see Adverse Reactions ( 6.1 )] . 5.2 Urinary Retention in Patients with Bladder Outlet Obstruction and in Patients Taking Muscarinic Antagonist Medications for OAB In patients taking MYRBETRIQ, urinary retention has been reported to occur 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 [see Clinical Pharmacology ( 12.2 )] . 5.3 Angioedema Angioedema of the face, lips, tongue, and/or larynx has been reported with MYRBETRIQ/MYRBETRIQ Granules. In some cases, angioedema occurred after the first dose, however, 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/MYRBETRIQ Granules and provide appropriate therapy and/or measures necessary to ensure a patent airway [see Adverse Reactions ( 6.2 )] . 5.4 Patients Taking Drugs Metabolized by CYP2D6 Since MYRBETRIQ/MYRBETRIQ Granules is a moderate CYP2D6 inhibitor, the systemic exposure to CYP2D6 substrates is increased when coadministered with MYRBETRIQ/MYRBETRIQ Granules. Therefore, appropriate monitoring and dose adjustment may be necessary, especially with narrow therapeutic index drugs metabolized by CYP2D6 [see Drug Interactions ( 7.1 ) and Clinical Pharmacology ( 12.3 )] .
Who should not take Myrbetriq
Granules is contraindicated in patients with known hypersensitivity reactions to mirabegron or any inactive ingredients of the tablet or oral suspension [see Adverse Reactions ( 6.1 , 6.2 )] . Hypersensitivity to mirabegron or any inactive ingredients. ( 4 )
Overdose — what happens if you take too much
Mirabegron has been administered to healthy volunteers at single doses up to 400 mg. At this dose, adverse events reported included palpitations (1 of 6 subjects) and increased pulse rate exceeding 100 beats per minute (bpm) (3 of 6 subjects). Multiple doses of mirabegron up to 300 mg daily for 10 days showed increases in pulse rate and systolic blood pressure when administered to healthy volunteers. Treatment for overdosage should be symptomatic and supportive. In the event of overdosage, pulse rate, blood pressure and ECG monitoring is recommended.
U.S. Poison Control: call or text 1-800-222-1222 (free, 24/7). In an emergency call 911. From the FDA label; not medical advice.
Interactions
Drug interaction studies were conducted in adult patients to investigate the effect of coadministered drugs on the pharmacokinetics of mirabegron and the effect of mirabegron on the pharmacokinetics of coadministered drugs (e.g., ketoconazole, rifampin, solifenacin succinate, tamsulosin, and oral contraceptives) [see Clinical Pharmacology ( 12.3 )] . No dose adjustment is recommended when these drugs are coadministered with mirabegron. The following are drug interactions for which monitoring is recommended: • Drugs Metabolized by CYP2D6 : Mirabegron is a CYP2D6 inhibitor and, when used concomitantly with drugs metabolized by CYP2D6, especially narrow therapeutic index drugs, appropriate monitoring and possible dose adjustment of those drugs may be necessary. ( 5.4 , 7.1 , 12.3 ) • Digoxin : When initiating a combination of mirabegron and digoxin with or without solifenacin succinate, use the lowest dose of digoxin; monitor serum digoxin concentrations to titrate digoxin dose to desired clinical effect. ( 7.2 , 12.3 ) 7.1 Drugs Metabolized by CYP2D6 Since mirabegron is a moderate CYP2D6 inhibitor, the systemic exposure of drugs metabolized by CYP2D6 enzyme is increased when coadministered with mirabegron. Therefore, appropriate monitoring and dose adjustment may be necessary when MYRBETRIQ/MYRBETRIQ Granules is coadministered with these drugs, especially with narrow therapeutic index CYP2D6 substrates [see Warnings and Precautions ( 5.4 ) and Clinical Pharmacology ( 12.3 )] . 7.2 Digoxin When given in combination, 100 mg mirabegron increased mean digoxin C max from 1.01 to 1.3 ng/mL (29%) and AUC from 16.7 to 19.3 ng.h/mL (27%). Concomitant administration of 0.25 mg digoxin with a combination of 5 mg solifenacin and 50 mg mirabegron increased digoxin AUC tau and C max by approximately 10% and 14%, respectively. For patients who are initiating a combination of mirabegron and digoxin, the lowest dose for digoxin should initially be considered. Serum digoxin concentrations should be monitored and used for titration of the digoxin dose to obtain the desired clinical effect [see Clinical Pharmacology ( 12.3 )] . 7.3 Warfarin The mean C max of S - and R -warfarin was increased by approximately 4% and AUC by approximately 9% when administered as a single dose of 25 mg after multiple doses of 100 mg mirabegron. Following a single dose administration of 25 mg warfarin, mirabegron had no effect on the warfarin pharmacodynamic endpoints such as International Normalized Ratio (INR) and prothrombin time. However, the effect of mirabegron on multiple doses of warfarin and on warfarin pharmacodynamic end points such as INR and prothrombin time has not been fully investigated [see Clinical Pharmacology ( 12.3 )] .
Storing Myrbetriq, and how long it keeps
Quoted from this product’s own FDA label. Storage belongs to the product and its device, not to the drug in general — a pen and a tablet of the same medicine are kept completely differently.
- “Store and Dispense Store MYRBETRIQ Granules at 20°C to 25°C (68°F to 77°F) with excursions permitted from 15°C to 30°C (59°F to 86°F) [see USP Controlled Room Temperature].”
How long does Mirabegron stay in your body?
The elimination half-life of mirabegron is about 50 hours — the time it takes the body to clear about half of it. As a rule of thumb, a medicine is mostly gone after roughly 4 to 5 half-lives, though this varies from person to person with age and kidney or liver function. The FDA label gives a terminal elimination half-life of roughly 50 hours for adults taking the extended-release tablets (all US oral mirabegron products are extended-release; the label reports no separate immediate-release value — IR tablets appear only in drug-interaction studies). Because of that long half-life, blood levels keep rising for about a week, and the label states steady state is reached within 7 days of once-daily dosing, with steady-state exposure roughly double that of a single dose. No active metabolite outlasts the parent: the two major circulating metabolites are phase-2 glucuronides (16% and 11% of total exposure) that the label describes as not pharmacologically active at the beta-3 adrenergic receptor, so mirabegron itself is the main active compound. Age does not change it much — the label reports Cmax and AUC in volunteers 65 and older were similar to those in adults 18 to 45. Reduced kidney or liver function raises how much drug is in the body rather than a stated change in half-life: AUC was 31%, 66%, and 118% higher in mild, moderate, and severe renal impairment, and 19% and 65% higher in mild and moderate (Child-Pugh A and B) hepatic impairment; mirabegron has not been studied in end-stage renal disease, dialysis, or severe (Child-Pugh C) hepatic impairment. Children are different: in pediatric patients treated for neurogenic detrusor overactivity with the tablets or granules, the mean terminal half-life is about 26 to 31 hours.
This is general information, not medical advice. It doesn’t tell you when a drug test would read negative (tests detect substances for different, often longer, windows) or when it’s safe to take another dose — ask your pharmacist or prescriber. Source: MYRBETRIQ (mirabegron) extended-release tablets and granules — FDA prescribing information, section 12.3 Pharmacokinetics.
Drug class
May treat (source: NIH RxClass)
See how Myrbetriq ranks — best-rated beta3-adrenergic agonist for:
Dosage forms
Powder, extended release and Tablet, extended release
The forms currently marketed in the U.S., per the FDA National Drug Code Directory.
Ways to save
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Frequently asked questions
- What does Myrbetriq treat?
- Myrbetriq (Mirabegron) may be used to treat overactive urinary bladder, urge urinary incontinence, based on NIH RxClass drug-classification data (conditions a drug may treat — not a verbatim copy of the FDA-approved label). This is general reference, not medical advice.
- How much does Myrbetriq cost?
- Nobody can tell you what you will pay — your price is set by your insurer's formulary, your deductible and the pharmacy's markup, and none of those are published. What IS published is what the pharmacy paid to acquire it: about $288.81 for 30, per the CMS NADAC survey. Treat that as the floor, not the quote — ask the pharmacist for the cash price as well as your copay, because for cheap generics the cash price often wins.
- Is there a coupon or discount for Myrbetriq?
- pharmaranks is an independent ratings site, not a pharmacy — we don't issue coupons or sell Myrbetriq. To pay less, ask your prescriber or pharmacist whether a generic equivalent exists, check the manufacturer's copay/savings card and patient-assistance program, and compare a pharmacy discount card against your insurance copay. Prices vary by pharmacy, insurance, and location, so always confirm at the counter. This is general reference, not medical or financial advice.
- Who makes Myrbetriq?
- Myrbetriq is marketed by Apgdi. You can see Apgdi's full profile, rating, and other products on pharmaranks.
- Is Myrbetriq a brand-name or generic drug?
- Myrbetriq is a brand-name product with the active ingredient Mirabegron. Lower-cost generic equivalents containing Mirabegron are available — ask your pharmacist.
- Is Myrbetriq available over the counter?
- No. Myrbetriq is a prescription (Rx) medication in the US — you need a prescription from a licensed clinician (in person or via telehealth); it isn't sold over the counter. For some conditions there are OTC alternatives — ask your pharmacist.
- What forms does Myrbetriq come in?
- Myrbetriq is currently marketed as powder, extended release and tablet, extended release, per the FDA's National Drug Code Directory.
- What class of drug is Myrbetriq?
- Myrbetriq is classified as beta3-adrenergic agonist, per the FDA's Established Pharmacologic Class.
- Is Myrbetriq FDA-registered?
- Myrbetriq is on record with the U.S. FDA under application number NDA202611. You can verify this on its official FDA label.
- Is Myrbetriq safe?
- There's no single safe-or-not verdict, and we don't yet have a composite recall-safety score for Myrbetriq. Review its FDA-label side effects and warnings below, and always consult a licensed professional.
- What are the side effects of Myrbetriq?
- Myrbetriq's side effects are taken directly from its FDA label. From the label: The following adverse reactions are discussed in more detail in other sections of the labeling. • Hypertension [see Warnings and Precautions ( 5.1 )] • Urinary Retention [see Warnings and Precautions ( 5.2 )] • Angioedema [see Warnings and Precautions ( 5.3 )] • Most commonly reported adverse reacti… Both common and serious reactions are documented in full on this page. This is general reference from the FDA, not medical advice — always consult a professional.
Clinical content sourced from the FDA label via openFDA (U.S. FDA). View the FDA label on DailyMed → Provided for general reference only — not medical advice. Always consult a licensed professional and the current prescribing information.
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