The copper IUD is one of the most revolutionary contraceptive methods due to its effectiveness and simplicity. It is a T-shaped mechanism that, when placed inside the cervix, prevents the passage of sperm by thickening the cervical mucus. Unlike the Mirena IUD, the copper IUD does not use hormones, which is why many women consider this method safer. Although the copper IUD avoids the side effects derived from the loss of balance in hormonal levels, this system is not indicated for all types of women. It is convenient to know the contraindications of the IUD since its misuse could cause serious health risks.

The risks of the copper IUD

  • Most women have no problem using the copper IUD, as long as they first consult our gynecologist. Despite the belief, it is possible to use the IUD from adolescence, it is not restricted to women with children, although it is not recommended for women who have not had sexual intercourse.
  • The main contraindication that you must take into account if you consider this contraceptive method is to verify that you are not allergic to copper, since it is one of the main components of the device. If you have not performed previous tests to rule it out, after the implantation of the IUD you must be attentive to some symptoms such as skin irritation, etc.
  • The copper IUD is also not recommended in case of hypermenorrhea, heavy or painful menstruation, because this system can increase the duration and quantity during the period, especially after the first months after its placement. In case of suffering this problem, it can lead to other more serious complications such as anemia.
  • Other contraindications may occur in case of suffering pelvic or vaginal infections, sexually transmitted diseases, uterine cancer, endometriosis or there are suspicions of pregnancy. In any of these cases it is convenient to go quickly to the gynecologist to carry out the necessary examinations.
## How to assess if you're a good candidate: pre-insertion checklist and tests Before placing a copper IUD I perform a structured assessment to reduce risks and ensure the patient understands alternatives. The following is a practical, step-by-step checklist I use in clinic. If you are considering a copper IUD, you can use this as a guide to what your provider should review. - Medical history and contraceptive goals - Confirm the patient’s desire for long-acting, non-hormonal contraception. - Ask about bleeding history (heavy periods, clotting, anemia). - Review prior gynecologic surgeries (uterine fibroids, cesarean scars) and any known uterine anomalies. - Ask about copper allergy, personal or family history of metal sensitivity. - Document current or recent pelvic pain or signs of infection. - Sexual history and STI risk screening - Screen for risk of chlamydia/gonorrhea if within risk window (under 25, new or multiple partners). - Obtain NAAT tests when indicated. Active, untreated cervicitis or PID is a contraindication. - If testing is pending but low risk, many providers still offer same-day insertion with instruction to return if positive. - Pregnancy assessment - Confirm not pregnant. If last menstrual period is recent and sexually active, perform a urine pregnancy test if there is any uncertainty. - Suspicion of pregnancy (positive test, irregular bleeding with missed period) → do not insert. - Pelvic exam and uterine assessment - Bimanual exam to estimate uterine size and position. - If uterine cavity distortion is suspected (large fibroids, congenital anomaly), consider ultrasound prior to insertion. - Palpate for adnexal tenderness; severe or focal tenderness should prompt STI evaluation. - Laboratory considerations - Hemoglobin if heavy menses or history of anemia. - STI tests as above. - Copper allergy testing is rarely done routinely; a careful history for contact dermatitis or systemic copper reactions is usually enough. If there is a known history of severe copper allergy or Wilson disease, consult a specialist. - Counseling and informed consent - Discuss expected bleeding patterns (often heavier periods and cramping for the first 3–6 months). - Review signs of complications (high fever, severe pain, missing strings, pregnancy symptoms). - Explain the long-term efficacy (usually up to 5–10 years depending on device) and removal procedure. - Discuss alternatives, including hormonal IUDs (LNG-IUS), implants, or sterilization. Real example: A 34-year-old woman with regular heavy menses asked about the copper IUD because she prefers non-hormonal methods. On assessment, her hemoglobin was 10.8 g/dL (mild anemia). I explained the high likelihood of heavier bleeding with a copper device and offered either an LNG-IUS (which typically reduces bleeding) or a copper IUD only if she accepted the possibility of worsening anemia and agreed to close follow-up and iron therapy. She chose the LNG-IUS. Practical advice for providers and patients: - If you are pregnant or suspect pregnancy, delay insertion. - If you have a history of frequent or severe heavy bleeding, consider a hormonal option first. - If you are at high risk for STIs, either perform STI testing and delay insertion if positive, or offer same-day insertion with strong follow-up for results and treatment if necessary. ## Managing side effects and complications: step-by-step clinical advice The copper IUD is safe for most women, but complications and bothersome side effects occur. Below I detail actionable steps for common problems, from mild to urgent. - Immediate post-insertion cramping and pain - Expected: cramps similar to heavy menstrual cramps during and after insertion for a few hours. - Management: NSAIDs (ibuprofen 400–800 mg or naproxen 500 mg) given 30–60 minutes before insertion reduce pain; continue scheduled NSAIDs for the first 24–72 hours as needed. - If severe pain unrelieved by analgesics, consider uterine perforation or retained instrument — evaluate urgently with exam and ultrasound. - Heavy bleeding or worsened dysmenorrhea - First-line: NSAIDs during menses (mefenamic acid or ibuprofen) start at onset of bleeding and continue for 2–3 days; they reduce blood loss by inhibiting prostaglandins. - Tranexamic acid is effective for heavy bleeding (if no contraindications) — 1 g three times daily during menses for up to 5 days. - Short-term combined oral contraceptives can be used to manage breakthrough bleeding in some patients who accept short-term hormones. - If bleeding remains problematic after 3–6 months or causes anemia, discuss removal and alternative contraception (LNG-IUS often improves bleeding). Real example: A 29-year-old nulliparous patient had a copper IUD placed and experienced prolonged heavy bleeding that led to a hemoglobin drop from 13 to 10 g/dL over 6 months. We treated with tranexamic acid during menses and iron supplementation but ultimately removed the IUD and placed a levonorgestrel IUD (LNG-IUS), which controlled bleeding within 3 months. - Expulsion (partial or complete) - Incidence: complete expulsion occurs in about 2–10% during the first year; risk is higher in postpartum placement and in younger/nulliparous patients. - Signs: feeling the plastic or the threads longer/shorter than before, missing strings, unexpected pregnancy. - Action: If you suspect expulsion, do a speculum exam; if strings are not visible, perform a pelvic ultrasound to confirm device location. If expelled, remove and discuss re-insertion vs. alternative methods. - Perforation - Incidence: approximately 1–2 per 1,000 insertions (varies in literature). - Risk factors: insertion during lactation and by less experienced inserters increase risk. - Presentation: severe pain at time of insertion, persistent pain, or lost threads; sometimes asymptomatic and found on imaging. - Action: If perforation is suspected, obtain ultrasound; if not located in uterine cavity, abdominal x-ray/CT can help. Surgical removal (laparoscopy) is usually indicated. - Infection and PID - PID risk is slightly increased only if an STI is present at time of insertion; most data show that risk is concentrated in the first 20 days post-insertion. - Symptoms: fever, severe pelvic pain, purulent discharge. If PID is suspected, start empiric antibiotics and remove the IUD only if there is failure to respond or severe infection. - Practical step: Screen high-risk patients for chlamydia/gonorrhea and treat before insertion if positive. Provide clear instructions to return with signs of infection. - Pregnancy with IUD in situ - Though rare, pregnancy can occur with an IUD. In such cases the risk of ectopic pregnancy is relatively higher compared with other contraceptives, though overall absolute risk is low. - Action: If pregnancy occurs, perform ultrasound to determine location. If IUD strings are visible and removal is possible without disrupting the pregnancy, remove it due to increased risk of adverse pregnancy outcomes if left in place. If removal would be difficult, counsel on risks and provide close monitoring. - Copper allergy and systemic conditions (e.g., Wilson disease) - Documented systemic copper toxicity from an IUD is extraordinarily rare; however, known severe copper allergy or active Wilson disease are relative contraindications in many practices. - Action: If you have known Wilson disease or severe hypersensitivity to copper, discuss alternatives (LNG-IUS or non-IUD methods). If uncertain, consult the patient's hepatologist or a specialist. Practical clinic tips: - Use ultrasound before or immediately after difficult insertions if available. - Have protocols for managing suspected PID, perforation, or pregnancy with an IUD. - Schedule a one-month follow-up or advise a patient to check strings after first period; earlier follow-up if concerns. ## Counseling and day-of-insertion practical advice for patients Patients do better with clear, practical directions. Here is a concise, actionable list I give patients at their visit: - Before the visit - Eat and hydrate normally (low blood sugar can worsen pain). - Take an NSAID (ibuprofen 400–600 mg) about one hour before insertion unless told otherwise. - Bring a supportive person if desired; driving is usually fine afterwards. - What to expect during insertion - Procedure takes 5–10 minutes once the cervix is visualized. - Expect cramping similar to heavy period cramps during and shortly after. - Some light spotting or bleeding is common for a few days to weeks. - After insertion - Use pad rather than tampon for the first 24–48 hours. - Avoid sexual intercourse, tampon use, douching, or swimming for 48 hours in some clinics — follow your provider’s recommendation. - Check IUD strings after your first period: insert a finger into the vagina and feel for 1-2 thin threads at the cervix. Do not pull on them. - When to call your provider or seek emergency care - Severe abdominal/pelvic pain not relieved by NSAIDs. - Fever >38°C (100.4°F) or shaking chills. - Heavy bleeding (soaking a pad every hour for more than 2 hours). - Missing strings or feeling the plastic of the IUD in the vagina. - Symptoms of pregnancy (missed period, breast tenderness, nausea). Real example for patients: A patient who is returning to work asked whether she can resume exercise. I advised light activity the same day but to avoid heavy lifting and high-impact workouts for 24–48 hours. She resumed running after 48 hours with no problems. ## Absolute and relative contraindications — quick reference - Absolute contraindications (do not insert): - Current pregnancy. - Current pelvic inflammatory disease (PID) or purulent cervicitis. - Known uterine or cervical malignancy. - Unexplained abnormal vaginal bleeding. - Known allergy to copper (severe systemic allergy). - Relative contraindications (consider risks and benefits): - Wilson disease (discuss with specialist). - Distorted uterine cavity (e.g., large submucosal fibroid) — consider ultrasound first. - Recent STD exposure — test and treat prior to insertion if possible. - Severe menstrual bleeding or anemia — often better to select LNG-IUS. Note: Postpartum insertion and immediate post-abortion insertion are options in many settings but carry higher expulsion rates; plan counseling accordingly. ## Switching from copper IUD or removal: practical steps - If you decide to remove or switch: - Schedule a clinic visit; removal is quick — grasp the strings and apply gentle traction. - If strings are not visible, ultrasound will locate the device. Removal may require biopsy forceps or hysteroscopic/laparoscopic techniques if embedded. - If switching to another IUD or method, consider immediate replacement during the same visit if infection is not suspected and the patient desires ongoing contraception. Real example: A 40-year-old wished to conceive and had a copper IUD for 7 years. At removal, strings were intact and removal was straightforward. We discussed timing of conception and folic acid supplementation. Internal resources and supplies: - If you want more reading on related contraceptive choices, see our [related topic](/blog). - For clinic supplies and self-care items I recommend, check the [shop](/shop). ## FAQ ### Can a copper IUD cause systemic copper toxicity or worsen Wilson disease? Systemic copper toxicity from a copper IUD is extremely rare because the amount of copper released locally into the uterus is minimal and systemic absorption is low. However, because Wilson disease involves impaired copper metabolism, many clinicians classify an active or poorly controlled Wilson disease as a relative contraindication. If you have Wilson disease, you should discuss risks with your hepatologist and gynecologist. In many cases, an alternative non-copper method (e.g., levonorgestrel IUD, implant, or sterilization) is safer. The decision should be individualized, based on disease control and specialist input. ### What are the signs of a copper IUD-related infection and how is it treated? Signs of infection include fever, severe lower abdominal pain, unusual or foul-smelling vaginal discharge, and dyspareunia (pain with intercourse). If you have these symptoms within the first 3 weeks after insertion (or anytime), contact your provider. PID is usually treated with a multi-drug antibiotic regimen that covers gonorrhea, chlamydia, and anaerobes. The IUD can often be left in place while treating PID unless the infection is severe or there is no clinical improvement with antibiotics. Early diagnosis and treatment are essential to reduce long-term fertility impact. ### How common are expulsions and what increases my risk? Expulsion rates vary by population and timing of insertion but generally range from 2–10% in the first year. Risk factors include insertion in the immediate postpartum period, nulliparity, a retroverted uterus, and heavy menstrual bleeding. If expulsions occur, fertility returns rapidly; if you want continued long-term contraception you can often have the device re-inserted or choose another method. ### If I get pregnant with a copper IUD, what happens next? Pregnancy with an IUD is uncommon, but it can occur. First, confirm the pregnancy with a test and ultrasound. There’s an increased relative risk that a pregnancy with an IUD in place will be ectopic, so early ultrasound to determine location is necessary. If the strings are visible and removal is feasible without disturbing the pregnancy, removing the IUD reduces the risk of miscarriage and infection. If removal is impossible or the IUD is embedded, you will need close monitoring, and your provider will discuss the risks and possible interventions. ### Will the copper IUD affect my periods long-term? Many patients experience heavier and longer periods, and increased cramping, especially in the first 3–6 months after insertion. For most women these effects decrease over time but for some they persist. If heavy bleeding is severe or causes anemia, consider medical management (NSAIDs, tranexamic acid, short-term combined oral contraceptives) or removal and switching to a levonorgestrel IUD, which typically reduces bleeding. Document baseline hemoglobin before insertion if you have a history of heavy menses. ## Final notes for patients and providers - The copper IUD is a highly effective, non-hormonal contraceptive option suitable for many women. However, it is not risk-free and is not appropriate for everyone. - Always perform a careful pre-insertion assessment: pregnancy exclusion, STI risk evaluation, and uterine cavity assessment when indicated. - Provide clear counseling on expected bleeding changes, signs of complications, and when to seek care. - Monitor patients with heavy bleeding or other symptoms closely; do not hesitate to remove the device if complications or intolerable side effects occur. - For more in-depth posts about contraceptive options and side-effect management, see our [related topic](/blog). If you need insertion kits, patient educational materials, or OTC supplies we recommend, visit our [shop](/shop). If you have specific symptoms or a unique medical history (e.g., liver disease, prior pelvic infections, or previous difficult insertions), make an appointment with a gynecologist to review your individual risks and the most appropriate contraceptive plan.