Ortho Tri-Cyclen Lo® is a prescription birth control pill that is classified as a combined oral contraceptive. It contains both an estrogen and a progestin, hormones that help prevent pregnancy by stopping ovulation and altering the lining of the uterus and cervical mucus. Each Ortho Tri-Cyclen Lo pack contains three "phases" of pills -- each with different amounts of hormone -- that must be taken in order.
(For more information, click Ortho Tri-Cyclen Lo to access a list of important dosing tips and precautions, find out potential side effects that may occur with this oral contraceptive, and determine if this form of birth control is right for you.)