Active Pharmaceutical Ingredients are the substances in a drug that produce the intended effects. They are distinct from excipients, which are inactive substances used to facilitate the delivery of the API. Regardless of the form a medication takes—be it a pill, liquid, or injectable—the quality and purity of the API are fundamental to the drug's effectiveness and safety.
Research suggests that combining these two compounds may have a multiplicative effect on enhancing cognitive abilities, improving physical performance, and increasing energy levels. For instance, a study indicated that participants supplementing with both PQQ and CoQ10 reported increased energy and better mental clarity compared to those taking only one of the supplements.