Czekalski Lobascz, BrendaReis, Maria Beatriz de FrançaMendes, Gabriella de Perez Monteiro e TiburcioCruz, Danillo Christian de OliveiraDamaceno, Maria Jose Caetano FerreiraSartorao Filho, Carlos Izaias [UNESP]2023-07-292023-07-292023-03-01International Journal of Gynecology and Obstetrics, v. 160, n. 3, p. 1007-1011, 2023.1879-34790020-7292http://hdl.handle.net/11449/248976Objective: To identify the determinants of menstrual cup use among medical students in Brazil. Methods: A cross-sectional study with an online survey regularly applied to matriculate women from Medical School in January 2021. Results: Of 277 women, 164 participated. The mean age was 22.26 ± 3.21 years. In all 136 women preferred external pads, 60 internal pads, 28 menstrual cups, and 11 did not use. Using a 1–10 scale, price, efficacy, sustainability, practice, vaginal health status, hygiene, and importance of internal genital integrity were investigated. Thirty-seven (22.56%) women related the use of menstrual cups in the last year. Using any method to reduce menstruation had an adjusted odds ratio (aOR) of 0.310 (95% confidence interval [CI] 0.122–0.787). Concern about the environmental biodegradation had an aOR of 6.369 (95% CI 1.372–29.562); concern about intimal health had an aOR 1.996 (95% CI 1.183–3.368); and concern about internal genital integrity had an aOR of 0.824 (95% CI 0.682–0.995) for menstrual cup use. Conclusion: The significant independent factors for the use or adherence to menstrual cups were: women using a method to reduce their menstrual flow; concerning biodegradation; concerning vaginal health; with no concerns about manipulating their genitalia. The menstrual cup was used by 22.56% of a medical school in Brazil among undergraduate women.1007-1011engeducationfeminine hygiene productsmedicalmenstrual cupmenstrual hygiene productsundergraduateArtigo10.1002/ijgo.144502-s2.0-85138390112