you must be hiv-negative to take truvada for prep.for hiv immediately before, and at least every 3 months, while taking truvada. if you think you were exposed to hiv or have flu-like symptoms, tell your doctor right away. they may do more tests to confirm you are still hiv negative. serious side effects can occur, including kidney problems, kidney failure, and bone problems, which may lead to fractures. rare, life-threatening side effects include a build-up of lactic acid and liver problems. tell your doctor about all the medicines you take, if you are pregnant or breastfeeding, or if you have kidney, bone, or liver problems, including hepatitis. if you have hepatitis b, do not stop taking truvada without talking to your doctor. common side effects include stomach pain, headache, and weight loss. ask your doctor about your risk of getting hiv and if truvada for prep may be right for you. i wanted to do more. that's why i'm on that pill. truvada for prep. eligible patients may pay as little as a zero dollar co-pay. find out more at tru