https://www.youtube.com/watch?v=Y7yo0G6DHRg
張堅庭講到似層層咁
其實講果隻野係維他命b3之後經過代謝既轉化物
之後我跟住佢講走左去睇amazon review, 真係好多positive vote
https://www.amazon.com/TRU-Nicotinamide-Riboside-Next-Level-Vegetarian/dp/B07LCFNBYT/ref=sr_1_1_sspa?keywords=nad%2B&qid=1559293343&s=gateway&sr=8-1-spons&psc=1&smid=A1W0QC6JE0QLDF