Long-acting reversible contraceptives (LARCs) provide effective birth control for several years through implants or intrauterine devices (IUDs). Implants are small rods placed under the skin that release progestin hormones, while IUDs are T-shaped devices placed in the uterus. Both methods are over 99% effective, safe for nearly all women, and can be used immediately after childbirth or abortion. Common types include implants like Implanon that last 3 years and copper IUDs like Paragard that are effective for 10-12 years. LARCs offer highly effective, long-term pregnancy prevention with few user responsibilities.