The etonogestrel implant is a single-rod progestin-only contraceptive method. The implant is a small 4 cm × 2 mm semi-rigid plastic rod containing 68 mg of the progestin etonogestrel and is radiopaque. The hormone is slowly released over 3 years but recent studies suggest the implant can be used up to 5 years. Fewer than one in 100 women become pregnant while using the implant. The contraceptive implant is a highly effective, reversible long-term option for patients in need of contraception. Patients will likely experience menstrual irregularities while having the implant, so effective counseling is important prior to insertion is important.

The etonogestrel implant is a single-rod progestin-only contraceptive method. The implant is a small 4 cm × 2 mm semi-rigid plastic rod containing 68 mg of the progestin etonogestrel and is radiopaque. The hormone is slowly released over 3 years but recent studies suggest the implant can be used up to 5 years. Fewer than one in 100 women become pregnant while using the implant. The contraceptive implant is a highly effective, reversible long-term option for patients in need of contraception. Patients will likely experience menstrual irregularities while having the implant, so effective counseling is important prior to insertion is important.