What is the mode of action of Implantable contraceptive (etonogestrel)?

• Primary: Inhibits ovulation
• Also: thickens cervical mucus

What is the failure rate of Implantable contraceptive?

0.07/100 women-years

How long does the Implantable contraceptive last?

3 years

How long does barrier protection need to be used after insertion of a Implantable contraceptive?

7 days if not inserted within the first 5 days of the cycle

What is the main side effect of the Implantable contraceptive?

irregular/heavy bleeding

What is an absolute contraindication (UKMEC 4) of Implantable contraceptive?

current breast cancer

What is an relative contraindication (UKMEC 3) of Implantable contraceptive?

• ischaemic heart disease/stroke
• unexplained, suspicious vaginal bleeding
• past breast cancer
• severe liver cirrhosis, liver cancer