I'm really sorry to hear about your father's difficulties. I can only relate because I, too, had the Brachytherapy implants done on May 22, 2007. I had the Iodine 125 seeds (100 of them) which have a half-life of eight weeks, meaning they get weaker and weaker after each eight week period. Kind of like fractions - a whole to a half to a quarter to an eighth, etc. Hopefully as the seeds get weaker, your dad may have less and less difficulty. Unfortunately, since the male urethra runs right through the center of the prostate connecting to the bladder behind it, thereby, giving the urethra a strong dose of radiation. Difficulty with urination and some early on blood clotting and is probably one of the major side effects. Also, nocturia - getting up frequently at night to urinate - is another. Flomax should help calm the neck of the bladder to ease this problem. I'm still having problems with the nocturia. I also have minor hypertension (high blood pressure) for which I take medication. Flomax has a tendency to lower the blood pressure in some men, so I've been a little leary to start taking it. So, that's my story. I wish I could help your dad's problem, but I can't. I'm 63 and so far my seed implantation has gone very well. However, I have my first post-Brachytherapy PSA test next month. So, we'll see. I expect a spike, but the next one and the one after are probably the key.