Rice bran arabinoxylan compound and quality of life of cancer patients (RBAC-QoL)

The intervention is an oral supplement of rice bran arabinoxylan compound (RBAC) powder packed in plastic sachets. The dosage is 3g per day for a duration of 24 weeks. Each RBAC sachet contains 1g of the active ingredient with excipients of microcrystalline cellulose (500mg), dextrin (200mg), corn starch (260mg), and tricalcium phosphate (40mg). The participants will take two sachets in the morning and one sachet in the evening during or after meals. The participants are to thoroughly mix the contents of the sachets into half a glass (approximately 125 ml) of water and drink it right away. This mode of administration makes the dry powder easy to swallow. To ensure adherence, the study coordinator will repeatedly provide instructions about taking supplement sachets including timing, storage, and what to do in the event of a missed dose during initial dispensing and every subsequent visit. The participants are to return unused sachets at each follow-up visit to be counted and recorded for compliance assessment. Participants will continue their active cancer treatment and medications as instructed by their treating oncologists. However, all concomitant medications used during the study will be recorded and updated at baseline and during each visit.