The printed info says it can take up to 4 weeks to work for BPH. I am currently on 2 Flomax a day and my doctor recommended adding Avodart to the Flomax but I asked him if I could try the Cialis 5mg for BPH before going to the Flomax/Avodart combo. He said yes, so I will be trying Cialis alone (no Flomax) and was just wondering how long it was for some of you before seeing results for BPH symptoms.