The contraceptive injection is a practical and effective method for preventing unwanted pregnancy, although this method of contraception does not protect against sexually transmitted diseases. There are two types of contraceptive injections:
- The monthly injection, which is administered every month. This type of contraceptive injection contains estrogen and progesterone.
- The quarterly injection, which is administered every three months and contains only progesterone.
Read the full article on: What is the contraceptive injection and how is it used? ( 76).
By Marta Barranquero Gómez B.Sc., M.Sc. (embryologist), Sara Salgado B.Sc., M.Sc. (embryologist), Silvia Azaña Gutiérrez B.Sc., M.Sc. (embryologist) and Cristina Algarra Goosman B.Sc., M.Sc. (psychologist).
Last Update: 06/03/2026
