Natural Factors 是加拿大一間知名生產天然健康補充品的品牌公司，產品包括抗病毒配方、藍莓萃取、輔酵素Q10、專利多醣體、高含量魚油等一系列營養補充品。樂濤LOTUSmart 作為–家專營環保、有機和天然健康產品的網店，提供一系列的Natural Factors產品，給客戶網上選購。
Made in Canada, Natural Factors puts quality first. Their quality control department and laboratory are involved in every step of product development, pre-production, and post-production testing. This is the crucial part of ensuring that our customers receive only the purest, most effective and reliable health products. All products undergo rigorous testing at all levels of the production process in accordance with United States Pharmacopoeia (USP) guidelines. Their testing procedures are regulated by the Health Protection Branch (HPB) of Health Canada. Factors laboratories also follows Good Laboratory Practices (GLP). Raw materials are tested for impurities, heavy metals, arsenic, chlorides and sulfates. The featured products of Natural Factors are now available at LOTUSmart Hong Kong.