MyFitnessPal smartphone application is used to track daily dietary intake and herbal/alternative supplements.

Amyloidosis patients will use MyFitnessPal application to track dietary intake and use of herbal/alternative supplements in from week 2-9. Patient's usage of the application and questionnaires completed by the patient at the start, Week 2 and Week 10 will determine feasibility.

The adherence is defined by the status (yes vs. no) of data recording per day; The adherence rate will be calculated by the ratio of the number of days of adherence to the total number of days of trial (i.e., 56 days); The status of data recording per day will be considered 'yes' if the participant completes a daily survey.

The subsequent adherence is the status of data recording per day during the third phase (Week 10) of trial participation (i.e., 7 days); The subsequent adherence rate will be calculated by the ratio of the number of days of adherence during the third phase (Week 10) of trial participation (i.e., 7 days); The status of data recording per day will be considered 'yes' if the participant completes a daily survey.