Studies indicate that bleeding irregularities and dysmenorrhea are common reasons for copper
IUD method discontinuation. Some evidence suggests that non-steroidal anti-inflammatory
medications (NSAIDs) can help improve bleeding during Cu-IUD use. However, these studies did
not examine NSAID use with the TCu380A specifically, nor did they evaluate readily available
NSAIDs such as over-the-counter naproxen. For this reason, the investigators propose a pilot
trial in which new TCu380A users complaining of heavy or prolonged menstrual bleeding or
spotting after 1 month of use are randomized to naproxen or placebo to be taken the first 7
days of menstruation for three consecutive cycles, and then observed for one cycle without
treatment.