We looked long and hard for the best supplements on the market and chose USANA Health Sciences because of their pharmaceutical -
grade manufacturing practices, which is a higher standard than organic.
According to Koss, for example, Primal has a multi-layered system of checks and balances, including third - party testing, to ensure that its products are safe — from the sourcing of its human -
grade ingredients to the operating procedures and sanitation
practices in its
manufacturing plants.