

In the case of finished pharmaceutical products, stability testing encompasses not just the API but also the entire formulation, including excipients, which are the inactive substances used to formulate the drug. The interactions between the API and excipients can affect the overall stability of the product. For example, moisture-sensitive APIs may require specific excipients that can provide a protective barrier against moisture uptake.
In addition to its effects on mitochondrial function, PQQ may also have strong neuroprotective effects. Research suggests that PQQ can help protect brain cells from oxidative stress and inflammation, both of which are implicated in neurodegenerative diseases such as Alzheimer's and Parkinson's disease. By mitigating these harmful processes, PQQ could potentially contribute to better cognitive function and reduced risk of age-related cognitive decline. Some studies even suggest that PQQ supplementation may improve memory and learning capabilities, making it a compound of interest for those looking to enhance their cognitive abilities.