• Contraception

Implanon Generic Name & Formulations

General Description

Etonogestrel 68mg; implantable rod; latex-free.

Pharmacological Class


How Supplied

Single rod implant (in pre-loaded disposable applicator)—1


Generic Availability


Implanon Indications


Subdermal contraception.

Implanon Dosage and Administration


See full labeling. Insert 1 implant subdermally in the inner side of upper (non-dominant) arm. Remove no later than 3 years after insertion.


Premenarchal: not applicable.

Implanon Contraindications


Pregnancy. Thromboembolic disorders. Liver tumors. Active liver disease. Undiagnosed abnormal genital bleeding. Breast or other progestin-sensitive carcinoma.

Implanon Boxed Warnings

Not Applicable

Implanon Warnings/Precautions


Complete physical exam before insertion and at least annually. Exclude pregnancy (see full labeling for switching from other contraceptive methods); use back-up contraception if appropriate. Complications of insertion and removal (eg, pain, paresthesias, bleeding, scarring, infection); incomplete or incorrect insertions may lead to expulsion or migration. See full labeling for insertion and removal technique; perform only if properly qualified. Remove implant if jaundice or thrombotic event occurs, or if a pregnancy is maintained; consider removing in prolonged immobilization. Risk of thromboembolism with pregnancy and post delivery; avoid use prior to 21 days postpartum. History of breast cancer; monitor. History of hypertension; monitor closely; remove implant if BP is significantly elevated or uncontrolled. Renal disease. Depression. Monitor diabetes, hyperlipidemia. Conditions aggravated by fluid retention. Risk of in situ broken or bent implant. Overweight women (may be less effective). Nursing mothers: may use after 4th postpartum week.

Implanon Pharmacokinetics

See Literature

Implanon Interactions


May be potentiated by CYP3A4 inhibitors (eg, itraconazole, ketoconazole). May be antagonized by potent hepatic enzyme inducers (eg, barbiturates, bosentan, carbamazepine, felbamate, griseofulvin, oxcarbazepine, phenytoin, rifampin, St. John's wort, topiramate); remove implant or use non-hormonal contraception. May be affected by HIV protease inhibitors or NNRTIs. May affect plasma levels of cyclosporine (increased) or lamotrigine (decreased). May affect measurement of sex hormone-binding globulin, thyroxine.

Implanon Adverse Reactions

Adverse Reactions

Headache, vaginitis, weight increase, acne, mastodynia, abdominal pain (exclude ectopic pregnancy), pharyngitis, leukorrhea, influenza-like symptoms, dizziness, dysmenorrhea, back pain, emotional lability, nausea, pain, nervousness, depression, insertion site pain; menstrual irregularities (eg, amenorrhea, changes in bleeding patterns), thrombotic events, others (see full labeling).

Implanon Clinical Trials

See Literature

Implanon Note


Provide adequate counseling. Obtain signed written consent (see full labeling).

Implanon Patient Counseling

See Literature