Just my two cents: far as I can tell, the tamsulosin is used to help you urinate. Not to cut down on urgency.
For me, the BIG urgency problem is food/beverage that irritates the bladder. Things like coffee, tea, cola, chocolate, peppers, onions, etc. cause a LOT of urgency. Can't delay racing to the bathroom.
I eliminated all the "bladder irritants" from my diet, and the urgency has 99% disappeared.
Here's a list to get you started. Probably won't hurt to try eliminating them, and see if it helps.
Hope this helps.
seed implant 2/1/11
Age 62, Biopsy September 2010.
PSA 4.8, Gleason 3+3, Stage T1c, 4/12 positive cores at 10-40%.
Palladium 103 implant February 1, 2011.