常见问题解答 截至 2018 年 8 月，iHerb 使用第三方独立实验室 ABC Testing、Eurofins 和 Alkemist 进行产品测试。使用第三方独立实验室可确保结果的客观性和公正性。
iTested 确认产品补充剂成分表和/或营养成分表提供的信息是准确的。还对产品进行了如微生物分析和重金属分析之类的测试，以确认清洁标签标准。
每份 iTested 产品文档都注明了测试方法。
将每6个月对产品进行一次测试。
Collagen supplements are commonly sourced from bovine, marine, chicken or other animal-derived ingredients. Product formulations vary by source.
Type I, Type II and Type III are different forms of collagen used in supplements. Products may contain a single type or a blend, depending on the formulation.
Marine and bovine collagen are different sources of collagen used in supplements. Neither source is inherently better, and products vary by formulation and ingredients.
Powder collagen can be mixed into drinks or food, while capsules offer a premeasured serving. The primary difference is delivery format, though formulations vary by product.
No. Collagen is an animal-derived protein. Consumers looking for vegan options may find plant-based collagen-support formulations that contain different ingredients.
