Starting Emtricitabine / tenofovir disoproxil: what do you wish you had known?

If you have taken Emtricitabine / tenofovir disoproxil, what would you tell someone preparing for a conversation with their clinician? What helped you keep track of your treatment routine? Share your own experience, the product or formulation and roughly how long you used it. Please avoid recommending doses or changing someone else's treatment.