Qlaira is a combined oral contraceptive, commonly known as a birth control pill or the Pill. Qlaira is used to prevent pregnancy. It is also used for the treatment of heavy andor prolonged menstrual bleeding not caused by any underlying disease in women who wish to use oral contraception. While taking Qlaira you may also experience the following benefits More regular and lighter periods potentially resulting in a decrease in anaemia iron deficiency. A decrease in period pain.