Hello, The possible causes for split stream urine are: 1. Ejaculation: many experience split urination hours after they have had an ejaculation. This is said to be one of the most common causes of this condition. How does this happen? During ejaculation, semen is ejected through the male urethra to the outside of the body. As the semen passes through the urethra, some get stuck in the tube and get dry. And since urine also passes through the same urethra that semen passes through, the dry semen acts as an obstruction and causes the urine to split into two while you are peeing. 2. Low pee pressure: When the pressure of the urine is not high then the stream of urine can easily split. 3. Congenital urethral fistula: the name sounds quite serious and so is its effect. This is a medical condition that comes as a result of a birth defect. 4. Urethral duplication/two urethras: this is another rare but very likely cause of two streams of urine during urination. Fluoroquinolones may be won t cause for split stream urine. Please consult your urologist, he will examine and treat you accordingly. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Penchila Prasad Kandikattu