Implant vs IUD: how do they compare?

Pick your placement: arm (implant, quick and numbed) versus uterus (IUD, brief but can hurt).
Weigh bleeding patterns: implant spotting can be unpredictable; hormonal IUDs trend lighter or none.
Decide on hormones: copper IUD is the only hormone-free option in this top tier.
Match duration: implant 3 years; hormonal IUD 3 to 8; copper IUD up to 10.
Remember STIs: neither method protects; condoms still apply.

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The implant and the IUD are the two most effective reversible contraceptives, and on pregnancy prevention they are effectively tied: the implant fails 0.1% in a typical year, hormonal IUDs 0.1 to 0.4%, and the copper IUD 0.8%. The differences are about where the device lives and how it treats your periods. The implant is a matchstick-sized rod placed under the skin of your upper arm in a quick office procedure with local anesthetic. It releases progestin and lasts 3 years. Its most common complaint is unpredictable bleeding: some people get lighter or no periods, others get irregular spotting that does not settle. The IUD sits in the uterus instead. Hormonal versions last 3 to 8 years and usually lighten or stop periods; the copper version is hormone-free, lasts up to 10 years, and can make periods heavier. Insertion experience differs: the arm implant is generally quick and mild, while IUD placement through the cervix is brief but can be sharply painful. Choose the implant if you want the simplest, least invasive placement and are fine with progestin and possible irregular bleeding. Choose a hormonal IUD if period suppression is the goal, or copper if you want hormone-free. Both are removable anytime, and neither protects against STIs.

Implant vs IUD: how do they compare?

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