...you may have overactive bladder, or oab. ohhhh...enough already! we need to see a doctor. ask your doctor about myrbetriq® (mirabegron). it treats oab symptoms of urgency, frequency, and leakage. it's the first and only oab treatment in its class. myrbetriq may increase blood pressure. tell your doctor right away if you have trouble emptying your bladder or have a weak urine stream. myrbetriq may cause serious allergic reactions... ...like swelling of the face, lips, throat or tongue, or trouble breathing. if experienced, stop taking and tell your doctor right away. myrbetriq may interact ...