l-carnitine diabetes type 1 The Role of in Mitochondria, Prevention of Metabolic Inflexibility and Disease Initiation and zero unnecessary fillers Diabetes Type 1 Type 2:
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346 A controlled trial randomized 64 healthy subjects aged 40-80 years to receive 21.5 mg PQQ or placebo daily and found that those given PQQ displayed significantly improved memory, reaction time, attention, and executive function compared with placebo

Kikuta, S., Jenkins, S., Kusukawa, J., Iwanaga, J., Loukas, M., & Tubbs, R

2014, Dimitriadis et al

In addition, some studies have demonstrated promising results in treatment of schizophrenia with some minor benefits in patients with borderline personality disorder
