 [ Symptoms ] memory blurred forgetfulness fatigued low self exteem exhaustion loss of balance independent overweight paranoid i have 45 year old daughter who is extremely negative does not care what she looks like it is so embarrassing  she does not trust anyone and no one is going to tell her what to do  she always has a cigarette and a can of coke in her hands says she never eats anything but is extremely overweight huge stomach i am so worried and we think she has a serious problem we love our daughter but feel she is slipping away please give us some advice we are walking on egg shells with her [ Disease ] kudos to you for recognizing it is not safe to take pravastatin or any cholesterol lowering medication while pregnant obviously you should discuss your pravastatin use and your desire to conceive with your health care provider in general pravastatin has a short half life of about two hours which means about two hours after you take it only half the dose is still circulating in your blood if you completely discontinue pravastatin it will gradually leave your bloodstream altogether there is no way to tell when the drug has completely left your system and every individual is body eliminates drugs at a different rate so your best bet is to have a discussion with your health care provider to see how long you should wait before trying to conceive best wishes on this exciting time in your life