Rejuvii has been extensively tested on neurological models, in beta groups and has been sold to hundreds of people. So far, there has not been one incident related to Rejuvii. All Rejuvii packages are fully sealed and the production was performed in a clean and controlled environment according to FDA, NSF and GMP standards. Furthermore, each ingredient is tested by a 3rd party laboratory before being distributed by the ingredient manufacturer. It is then tested again when it arrives at our manufacturing facility, and is then tested one more time after the final production. Testing at every point in production ensures that there is little risk for contamination and optimal purity for the ingredients. Also, the ingredients are stored in a cool and dry warehouse that is optimal for storing supplement products. Lastly, when formulating Rejuvii, we test every ingredient for interactions with the other ingredients in Rejuvii, and the ingredients in all the other Nootripure products to ensure that the Nootripure products can safely be used together.