The drugs that you are taking are safe for long-term use. The treatments that you have been undergoing are actually not so different from each other. The first approach is utilizing medications that shrink the prostate (Avodart) and relax some of the muscular fibers (Tamsulosin) and allowing urine to pass more freely through the prostatic urethra. By utilizing this protocol your prostate actually shrunk in size to a more "normal" size prostate. The second urologist substituted the previous drugs for Tebetane, a non-hormonal herbal preparation consisting of amino acids and plant extracts (pygeum africanum) that is not available in the US. There is no overwhelming clinical evidence that supports the use of this substance. If your clinical symptoms improve on the Tebetane, then the obvious answer is to continue its use. Otherwise I would seek alternative therapy. If you are emptying your bladder well, than your physicians may consider the use of a drug from the anti-cholinergic category. These agents help to decrease the frequency with which your bladder contracts.