Levonorgestrel implant

Levonorgestrel implant is a type of hormonal contraception that is implanted under the skin. It is a long-acting reversible contraceptive method that releases the hormone levonorgestrel into the body to prevent pregnancy.

Mechanism of Action

The levonorgestrel implant works by releasing a steady dose of levonorgestrel, a synthetic progestin. This hormone prevents ovulation, thickens cervical mucus to inhibit sperm movement, and thins the lining of the uterus to prevent implantation of a fertilized egg.

Use and Effectiveness

The levonorgestrel implant is one of the most effective forms of contraception, with a failure rate of less than 1% when used correctly. It is a long-acting method, providing contraception for up to five years after insertion.

Side Effects and Risks

Common side effects of the levonorgestrel implant include irregular menstrual bleeding, weight gain, and acne. Serious risks are rare but can include infection at the insertion site and ectopic pregnancy.

Insertion and Removal

The levonorgestrel implant is inserted under the skin of the upper arm by a healthcare provider. It can be removed at any time by a healthcare provider, but must be removed after five years.

History and Development

The levonorgestrel implant was first approved for use in the United States in 1990. It has since been approved for use in many other countries around the world.

See Also

• Contraception
• Hormonal contraception
• Progestin
• Ovulation
• Ectopic pregnancy

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