Active ingredient: doxazosin.
Cardura: The tablets contain doxazosin mesylate salt equivalent to 2 mg doxazosin.
Cardura XL: The GITS tablets contain doxazosin mesylate equivalent to 4 mg and 8 mg doxazosin.
Excipients/Inactive Ingredients: Cardura: Doxazosin mesylate tablets include the following inert ingredients: sodium starch glycolate, microcrystalline cellulose, lactose, magnesium stearate and sodium lauryl sulfate.
Cardura XL: Doxazosin mesylate GITS tablets include the following inert ingredients: polyethylene oxide, sodium chloride, hydroxypropyl methylcellulose, red ferric oxide (E172), titanium dioxide (E171), magnesium stearate, cellulose acetate, macrogol, pharmaceutical glaze and black iron oxide (E172).