What is a Subdermal Implant? Advantages, Application Process, and Who Is It Suitable For?

A subdermal implant is a long-acting, reversible method of birth control developed for women. This small rod — approximately 4 centimeters long and the size of a thin matchstick — is inserted just beneath the skin on the inner surface of the upper arm. Containing the hormone progesterone, this implant provides a high level of protection against unwanted pregnancy for up to 3 years through the continuous release of hormones.
Used by millions of women worldwide, the subdermal implant has one of the highest efficacy rates among currently available contraceptive methods. International studies show that this method is far less vulnerable to user error compared to daily pills or monthly injections.
How Does the Subdermal Implant Work?
The synthetic progesterone (etonogestrel) contained in the implant is slowly and steadily released into the body. This hormone prevents pregnancy through three main mechanisms:
- Suppresses ovulation: Prevents egg release from the ovaries.
- Thickens cervical mucus: Makes it more difficult for sperm to reach the uterus.
- Keeps the endometrium thin: Prevents implantation in the event of possible fertilization.
This triple mechanism of action makes the subdermal implant an extremely reliable contraceptive method.
How Is the Procedure Performed? How Long Does It Take?
The question on most women's minds is: "Is it painful? How long does it take?"
Subdermal implant insertion is a short and simple procedure performed by a gynecologist in a clinical setting. The process is as follows:
- Preparation: Local anesthesia is applied to the inner surface of the upper arm. This eliminates any pain during the procedure.
- Insertion: The implant is placed under the skin using a special applicator. The procedure takes only 2–3 minutes.
- Verification: Correct positioning of the implant is confirmed by gentle palpation.
- Bandage: A small dressing is applied; no stitches are required.
You can return to your daily routine immediately after the procedure. Minor bruising or tenderness may occur and will resolve within a few days. There is no visible mark at the insertion site; the implant cannot be detected from the outside.
Advantages of the Subdermal Implant
1. High Efficacy
International studies confirm that the subdermal implant is among the most reliable contraceptive methods available today. Since user error is not a factor, its effectiveness remains exceptionally high in real-world conditions.
2. Continuous Protection for Up to 3 Years
Once inserted, the implant provides 3 years of uninterrupted protection without any additional intervention. You no longer need to remember a daily pill, visit the doctor every three months, or take precautions before intercourse.
3. Quick and Easy Procedure
This 2–3 minute procedure requires no hospitalization and is performed comfortably under local anesthesia.
4. Removable at Any Time
The subdermal implant is not a permanent procedure. When you decide to plan a pregnancy or simply wish to discontinue, it can be removed by your gynecologist in a brief procedure. Fertility typically returns quickly after removal.
5. Minimizes Hormone Dose
The implant delivers only the precise amount of hormone the body needs, avoiding the hormonal fluctuations associated with daily pills.
Who Can Consider the Subdermal Implant?
The subdermal implant may not be suitable for every woman, but it is particularly worth considering for the following groups:
Women with Busy Professional and Social Lives
Remembering to take a pill at the same time every day can be challenging in a fast-paced lifestyle. The subdermal implant completely eliminates the concern of forgetting.
Women Who Struggle to Maintain Daily Pill Use
For women who have had to discontinue daily pills due to nausea, inconsistent use, or drug interactions, the implant offers a practical, long-acting alternative.
Women Planning a Future Pregnancy
"Can I get pregnant after the implant is removed?" is one of the most frequently asked questions. The answer is yes: fertility generally returns quickly after removal. It is therefore also a suitable interim option for women considering pregnancy within 1–2 years.
Breastfeeding Mothers
Being a progesterone-based method, it contains no estrogen. This characteristic makes it a potentially suitable option during breastfeeding — though this decision must always be made in consultation with a gynecologist.
Cilt Altı İmplantın Yan Etkileri Nelerdir?
As with any medical method, the subdermal implant may have possible side effects. These vary from person to person:
- Menstrual irregularities
- Headache
- Acne
- Mood changes
- Tenderness at the insertion site
Important: Whether these side effects occur and their intensity vary for each woman. Whether it is suitable for you can only be determined after a specialist evaluation.
Who Is the Subdermal Implant Not Suitable For?
The implant may not be recommended in the following situations:
- History of unexplained vaginal bleeding
- Liver disease
- Progesterone-sensitive tumors
- Thrombosis or clotting disorders
For this reason, a comprehensive medical history and gynecological evaluation must be performed before each application.
Subdermal Implant vs. Other Contraceptive Methods
| Method | Efficacy | Duration | User Intervention |
|---|---|---|---|
| Subdermal implant | Very high | 3 years | None |
| IUD (Coil) | Very high | 3–10 years | None |
| Daily pill | High (with correct use) | Daily | Daily |
| Monthly injection | High | 3 months | Every 3 months |
| Condom | High | Single use | Every intercourse |
As shown, the subdermal implant is one of the few methods that eliminates the need for user intervention while providing long-term protection.
Post-Procedure Care
- Avoid getting the insertion site wet during the first 24 hours after the procedure.
- Avoid strenuous arm exercises for 24–48 hours.
- You can occasionally check whether the implant is in place by gently touching the area.
- Do not neglect your annual routine gynecological check-ups.
- Contact your doctor if you have any concerns or problems.
Subdermal Implant in Istanbul Nişantaşı
As Op. Dr. Soner Düzgüner, I perform subdermal implant insertions at my clinic in Istanbul Nişantaşı under sterile clinical conditions within the scope of my gynecological expertise. Since every patient's individual health profile and needs are unique, the suitability of the implant for you can only be determined following a comprehensive examination and evaluation.
Frequently Asked Questions
Does the subdermal implant work immediately?
If inserted within the first 5 days of your menstrual cycle, it is effective immediately. If applied at any other time, additional contraception is recommended for the first 7 days.
Can the implant be felt or seen?
It can be felt under the skin by gently touching it; however, it is not visible from the outside.
Is removal difficult?
It is removed through a small incision under local anesthesia in just a few minutes.
Can smokers get a subdermal implant?
Since it contains progesterone and not estrogen, it may be a safer option for smokers compared to methods containing estrogen. However, the decision should always be made by your specialist.
This content is for informational purposes only. Please consult your doctor for diagnosis and treatment.
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Op. Dr. Soner DÜZGÜNER
Obstetrics and Gynaecology Specialist
Op. Dr. Soner Düzgüner: Provides diagnosis and treatment in areas such as in vitro fertilization, women's health, infertility, gynecological surgery and pregnancy follow-up.