Terazosin helps to lower blood pressure by relaxing blood vessels so that blood passes through them more easily. Benign enlargement of the prostate is a problem that can occur in men as they get older. The prostate gland is located below the bladder. As the prostate gland enlarges, certain muscles in the gland may become tight and get in the way of the tube that drains urine from the bladder. This can cause problems in urinating, such as a need to urinate often, a weak stream when urinating, or a feeling of not being able to empty the bladder completely.
Terazosin helps relax the muscles in the prostate and the opening of the bladder.
However, terazosin will not help shrink the prostate. The prostate may continue to grow. This may cause the symptoms to become worse over time. Therefore, even though terazosin may lessen the problems caused by enlarged prostate now, surgery still may be needed in the future. In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do.