Cardura is a medication known as an alpha-adrenergic blocker, which works by relaxing the arteries and veins so that blood can pass through them more easily. Cardura can also relax the muscles in the neck of the bladder and the prostate gland so that it is easier to urinate if you have an enlarged prostate. Cardura can also have a positive impact on reducing blood pressure and cholesterol at the same time. It comes in the form of a modified release capsule, enabling the active ingredients to be slowly absorbed by the body.