Necon is a combined oral contraceptive, which means that it contains a combination of two different hormones (an estrogen and a progestin). This prescription birth control pill works to prevent pregnancy by stopping ovulation, changing the cervical mucus, and altering the lining of the uterus. Several different types of Necon are available, each of which has different "phases," or strengths, of hormones in each pack.
Necon products are made by Watson Pharmaceuticals, Inc. Although they sound like brand-name drugs, Necon birth control pills are actually generic medications (see Generic Ortho-Novum or Generic Modicon for more information).