What is the contraceptive implant?

6th February, 2026    |    By  Sexual Health Australia    |     15

The contraceptive Implant (Implanon NXT) is a Long Acting Reversible Contraception (LARC). They are very effective at preventing pregnancy. This video explains about the contraceptive implant (Implanon NXT) and what to expect when having an implant inserted and removed. Please contact your GP or Sexual Health Victoria for more information.


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Contraception Options

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Video Transcription

Long-acting reversible contraceptives, also known as LARCs, are contraception methods that are over 99% effective at preventing pregnancy. LARCs include hormonal and copper intrauterine devices (often called IUDs) and the contraceptive implant.

These methods are reversible and can be inserted and removed by a trained doctor or nurse. After removal, fertility usually returns quickly to what is normal for each person. LARCs are widely used because they are convenient and don’t rely on remembering to take a daily pill.

Although LARCs are the most effective reversible contraceptives for preventing pregnancy, they do not protect against sexually transmitted infections (STIs). To reduce the risk of STIs, it is recommended to also use condoms.

The contraceptive implant is a flexible plastic rod about four centimetres long that is inserted under the skin of the upper arm. It releases a hormone called progestogen, which prevents pregnancy by stopping eggs being released from the ovaries and thickening the mucus at the cervix.

The implant can be inserted at any time and starts working after seven days. It lasts for three years. The implant is suitable for most people and is a popular choice because it is highly effective, easy to insert and remove, and there is no need to remember a daily pill or repeat prescriptions.

Everyone’s experience with the implant is different. Some people have no periods, which is safe. Most people have bleeding that is fairly light and may be irregular. Some people experience heavier or longer bleeding, which improves for about half of people within three months. People with painful periods often notice less pain with the implant.

Before insertion, a local anaesthetic is used to numb the area, which may sting briefly. The implant is inserted under the skin of the upper arm. After insertion, a dressing and bandage are applied, and it is common to have some bruising.

The implant can be removed at any time. Local anaesthetic is used, and the implant is taken out through a small cut. A new implant can be inserted straight away, or another form of contraception can be started immediately.

Some people experience side effects such as acne, mood changes, or tenderness in the breast or chest area. These side effects often settle within a few months. A small scar may occur where the implant is inserted or removed.

There is a very small chance that the implant may be inserted deep in the arm, which can make removal more difficult. A person should see a doctor or nurse if they cannot feel the implant under the skin, are experiencing concerning side effects, or think they may be pregnant.

The contraceptive implant is safe, effective, reversible, convenient, widely used, and suitable for most people.