2.2. Study Design
We used a randomised, double-blind, placebo-controlled, two-arm parallel group study of a four-week supplementation intervention period. Prior to intervention, participants who met the inclusion criteria were provided with a password-protected online link to complete a modified GSRS survey (mGSRS) [A simple randomisation schedule was manually prepared by an unblinded person who facilitated pre-screening and written informed consent. Participants who met the inclusion criteria were assigned a unique code number based on the randomisation schedule generated by the unblinded research member who was not involved in conducting the study assessment.