On November 9, 2022, the National Pharmaceutical Regulatory Agency (NPRA) of the Ministry of Health Malaysia issued a “Guidance on the Acceptance Criteria of Quantification by Input (QBI) of Active Ingredients Claimed on Label of Traditional Medicine and Health Supplement (TMHS) Products1 (hereinafter the Guidance) to expound the situations in which the active ingredients in TMHS products could be quantified by input.