The contraceptive ring, which brand name is NuvaRing. is a small ring that is placed inside the vagina once a month, for three weeks. It contains the same hormones as birth control pills: estrogen and progestin.
By Andrea Rodrigo BSc, MSc (embryologist), Sara Salgado BSc, MSc (embryologist) and Sandra Fernández BA, MA (fertility counselor).
Last Update: 12/07/2016