<s>[INST] i have been on tetralysal for 4 months due to acne, stopped taking it at the end of last month. i no its bad in pregnancy but what about after uve stopped taking it? how long should i wait until i try for another baby? cause i want a bay now but not sure how lon g it stays in your system? eloise [/INST] Hi, If you have given 1 month gap after stopping medicine, you can try for pregnancy. Usually these medicines are excreted from body within few days, to be on safer side leave 1 month. Maximum problem is if you take it during pregnancy, when the baby is growing. Do start Folic acid tablets 1 month before trying for pregnancy, to avoid fetal problems. This is independent of betrayal. Am sure I have clarified your query, do write back if anymore queries the best Chat Doctor.  </s>