SN instructed patient that Vesicare (solifenacin) reduces muscle spasms of the bladder and urinary tract. It is used to treat symptoms of overactive bladder, such as frequent or urgent urination, and incontinence ( urine leakage) . The most common side effect of solifenacin are dry mouth, blurred vision, and constipation. As all anticholinergics ,it may rarely cause hyperthermia due to decreased perspiration.