As we will discuss in the clinical evidence section, the story becomes more complicated when you move from animal models to human trials
The Pur Health exclusively uses pharmaceutical-grade B12 in two forms: methylcobalamin (the active, readily-usable form) and cyanocobalamin (the stable, synthetic form your body converts)
If you are exhibiting any of the symptoms aligned with a vitamin B12 deficiency, it would be worth getting tested by a doctor, as having a balanced B12 level helps to ensure good health and can improve your quality of life
NAD+ precursors are studied for supplying metabolic substrates
[1] In moderate deficiencies, feeling tired, feeling faint, mouth ulcers, rapid breathing, upset stomach, pallor, hair loss, decreased ability to think and joint pain and the beginning of neurological symptoms, including abnormal sensations such as, numbness and tingling, and tinnitus may occur
A mouse metabolises on a faster clock than a human, and a controlled diet in a cage is not a free-living human diet so even the week-numbers above should be read as the shape of a gradual response, not a promise that a human would see anything on the same calendar