NEXPLANON® is a contraceptive implant that provides long-term birth control. It is a matchstick-sized rod inserted under the skin of the upper arm that releases a steady but low dose of etonogestrel hormone. This prevents ovulation and thickens cervical mucus, inhibiting sperm penetration. According to the FDA, it has a failure rate of only 0.1 percent, which makes it one of the most effective contraceptives out there. To responsibly buy NEXPLANON® online, it is essential first to understand its composition, variants, side effects, and alternatives.