What Medications Affect IUD?
What Medications Affect IUD? blood thinners such as warfarin. barbiturates such as phenobarbital and pentobarbital. steroids such as prednisone, prednisolone, and methylprednisolone. antiseizure drugs such as carbamazepine, oxcarbazepine, topiramate, and phenytoin. Can anything make an IUD less effective? Dr. Velikova explained to INSIDER that an IUD that has been poorly positioned in your uterus or