K.BergA
Signs and symptoms: Many common symptoms can be caused by vitamin B12 deficiency, including weakness, tiredness, lightheadedness, heart palpitations, shortness of breath, pallor (pale skin), diarrhea, decreased appetite, nerve problems like numbness or tingling, visual changes and psycho-emotional problems like depression, memory loss or behavioral changes
Research indicates it is a potent regulator of lipid metabolism and cartilage regeneration without stimulating IGF-1 or inducing hyperglycemia
Timing microneedling sessions during GHK-Cu cycles may enhance results, as the peptide supports the collagen production triggered by the microneedling procedure
Currently i can say that there have been improvements
But I don't know of any reports that bisglycinate can be neuroprotective