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

Inclusion Criteria: * Adolescents and young adults (13-25 years old) who underwent kidney or liver transplantation at least 6 months prior to enrollment * Currently prescribed tacrolimus or sirolimus. Exclusion Criteria: * Currently receiving dialysis * Hospitalized for duration of study * Significant developmental or cognitive delay * No access to a mobile device that supports text messaging * Decline to use electronic pill box to monitor daily medication adherence * Non-English speaking * If a participant meets inclusion criteria, enrolls in the study, and experiences graft failure potentially leading to dialysis in the case of kidney transplant recipients, the participant will be given the option to continue in the study if they remain on tacrolimus or sirolimus.