I am currently using cerazette ( mini Pill) I have seen that using Topiramate with eastrogen pills will reduce the effectiveness of the pill. Would this be the case with cerazette? Also I want to go back onto the Depo injection as this is a progestin product would this still be effective. Sorry but I really really dont want children and have been warned of the side effects topiramate can have on births. Due to the large amount of side effects I just want to make sure. Thankyou for your time and help.