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Once an API is developed, it undergoes rigorous testing to ensure its safety and efficacy. This includes preclinical studies, often conducted in vitro (in test tubes) and in vivo (in live organisms), followed by multiple phases of clinical trials with human subjects. Each phase aims to assess different aspects, such as dosage safety, effectiveness, and adverse effects. This stringency is crucial, as even small changes in the API's chemistry can significantly affect the drug's performance and safety profile.
example of active pharmaceutical ingredient

The combination of PQQ and CoQ10 can amplify their respective benefits. For example, while PQQ promotes mitochondrial biogenesis, CoQ10 enhances the efficiency of ATP production in existing mitochondria. This synergy may provide enhanced energy levels, improved physical performance, and better endurance.
pqq koenzym q10
