Decision to treat for prostate is not done for the size, or the residual urine, but is entirely based on the symptoms and the effect on the quality of life it is creating. Treatment is possible either with medications or surgically. Medical treatment in presence of enlarged gland is usually done using a combination of two kinds of drugs, alphablockers to give immediate relief and 5-alpha reductase inhibitors to prevent further enlargement. The medication prescribed to you is one such combination. The current literature suggests that the use of 5-alpha reductase inhibitors does reduce the risk of complications in future, though may not entirely prevent it. Calcific foci in prostate indicate past infections in this gland and are neither producing any symptoms, nor removed by any drugs. Surgery for prostate is usually advised for severe symptoms, history of retention of urine, in presence of renal failure, evidence of upper tract dilatation, and in presence of prostate enlargement along with bladder stones. Medications are usually ineffective in later situations and surgery would be a better choice.