ObjectiveWe studied the adverse events occurring with the use of vaginal ring pessaries. MaterialWe report a series of nine cases of adverse events involving vaginal pessaries occurring within a 4-year period with over 23719 consultations and representing an incidence of 0.03%. ResultsThe mean age of the patients was 83 years (range: 70-96), and the mean parity was 3.77 (range: 2-6 children). The mean age of onset of the use of a pessary was 80 years. The mean number of years of use was 3 (range 1-5 years).The indications for pessary use were contraindication of surgery due to heart disease and, in women with prior surgery, the recurrence of prolapse or vaginal vault prolapse, and waiting for surgery.The adverse events found consisted of vaginal erosion and bleeding in 4/9 (44.44%) and vaginal discharge with vaginal infection in 5/9 (55.55%). ConclusionThe use of a pessary warrants special care and hygiene measures to ensure long-term successful use.