Latar Belakang: Kontrasepsi suntik merupakan metode KB yang banyak digunakan di Indonesia karena praktis dan efektif. Namun, penggunaannya dapat menimbulkan efek samping seperti spotting (perdarahan ringan di luar siklus menstruasi), terutama pada awal penggunaan, baik KB suntik 1 bulan maupun 3 bulan. Spotting bisa menimbulkan ketidaknyamanan bagi akseptor. Tujuan: Mengetahui gambaran kejadian spotting pada akseptor KB suntik di Puskesmas II Denpasar Barat. Metode: Penelitian ini merupakan studi deskriptif dengan pendekatan crosssectional. Sampel diambil menggunakan teknik total sampling terhadap 20 akseptor KB suntik 1 dan 3 bulan yang memenuhi kriteria inklusi. Data dikumpulkan melalui kuesioner dan dianalisis secara univariat dalam bentuk distribusi frekuensi dan persentase. Hasil: Seluruh responden (100%) mengalami spotting dalam kategori ringan. Mayoritas responden berusia 26–30 tahun, memiliki dua anak, tidak bekerja, dan menggunakan KB suntik 1 bulan (80%). Dari jumlah tersebut, 65% melaporkan pernah mengalami spotting, namun dengan frekuensi dan intensitas rendah. Kesimpulan: Kejadian spotting pada akseptor KB suntik tergolong ringan dan tidak mengganggu secara signifikan. Edukasi dan pemantauan rutin penting untuk meningkatkan kenyamanan pengguna dan mencegah penghentian kontrasepsi secara dini. Kata Kunci : Akseptor KB suntik, spotting, efek samping kontrasepsi

Background: Injectable contraception is widely used as a family planning method in Indonesia due to its practicality and effectiveness. However, it may cause side effects, namely spotting (light bleeding outside the menstrual cycle), especially during the initial stages of use, whether for the 1-month or 3-month injection. Spotting can cause discomfort for the acceptors. Purpose: To describe the incidence of spotting among injectable contraceptive acceptors at Public Health Center II West Denpasar. Method: This study employed a descriptive study using a cross-sectional approach. The sample was taken using a total sampling technique, including 20 acceptors of 1-month and 3-month injectable contraception who met the inclusion criteria. The data were collected using questionnaires and analyzed univariately in the form of frequency and percentage distributions. Result: The findings showed that all respondents (100%) experienced mild spotting. Most respondents were aged 26–30 years, had two children, were unemployed, and used the 1-month injectable contraceptive (80%). About 65% of the respondents reported experiencing spotting, but it occurred with low frequency and intensity. Conclusion: The incidence of spotting among injectable contraceptive acceptors is generally mild and does not cause significant discomfort. Education and regular monitoring are essential to improve user comfort and prevent early discontinuation of contraceptive use. Keywords: Injectable contraceptive acceptors, spotting, contraceptive side effects.