Betanil is the trade name, and its generic name is Mirabelone extended-release tablets. In the clinic, taking Mirabelone extended-release tablets does not have how long a course of treatment, its dosage needs to be determined according to the patient’s specific condition, there is no accurate dosage time, in general, the patient’s time to use the drug in a few weeks to a few months, the patient to comply with the doctor’s instructions to use the drug can be. Mirabelone extended-release tablets act on the β3 adrenergic receptors in bladder tissue, relax bladder smooth muscle to play a role, can be used to treat adult patients due to overactive bladder disease caused by urinary urgency, urinary frequency, urinary incontinence and other symptoms. Adverse reactions such as dizziness, nausea, constipation, headache, palpitations (rapid heartbeat, often accompanied by panic), rash, urinary tract infections, elevated blood pressure, tachycardia, and angioedema may occur with the use of the drug. The drug interacts with antimuscarinic drugs, metoprolol, disopyramide, digoxin, thioridazine, promethazine, CYP3A potent inhibitors such as itraconazole, clarithromycin. It is contraindicated in the following conditions: hypersensitivity to the drug; severe renal impairment; patients with moderate hepatic impairment who are taking potent CYP3A inhibitors; poorly controlled severe hypertension. Use with caution in patients taking promethazine and antimuscarinic drugs. If you need to use the drug patients, please under the guidance of a doctor, strictly follow the medical advice to take medication, do not self-medication.