Leveraging Technology to Improve Medication Adherence in Youth With Kidney or Liver Transplant

Participants will receive an electronic pill box; the research team will instruct participants on how to use this device. Participants will be asked to use the electronic pill box for their prescribed medicines for the duration of the study (up to 16 months). During the 12-week micro-randomized trial, participants will be randomized within person to receive (1) adherence support text messages or (2) no text message after each missed dose, and (1) praise text message or (2) no text message after each on time dose. Dose timing will be determined based on participant report of when they typically take their tacrolimus or sirolimus medicine.