Mila is 27 years old and is a new patient to the GP practice and you do not have access to her full set of medical records. She attends today seeking emergency contraception following an episode of unprotected sexual intercourse 12 hours ago. She tells you she recently completed a long course of medication for Tuberculosis which she contracted whilst travelling abroad. She is keen to have Ulipristal prescribed given she had this two years ago.
How long after finishing Rifampicin should she not take Ulipristal?