supplementing with acetyl l carnitine Metabolic Maintenance® L-Carnitine NOW Foods Supplements, Acetyl-L Carnitine
Description
And overdosing on vitamin B12 from food sources alone is virtually impossible

If you change dose, timing, and bedroom temperature simultaneously, you cannot determine which change produced any effects you notice

Richie JP et al
Proteolytic cleavages of MET: the divide-and-conquer strategy of a receptor tyrosine kinase
