This chronic state of oxidative stress acts like a slow-burning fire within the cell, damaging the delicate inner mitochondrial membrane and rapidly depleting local stores of vital antioxidants like CoQ10
Pex30p, Pex31p, and Pex32p Form a Family of Peroxisomal Integral Membrane Proteins Regulating Peroxisome Size and Number inSaccharomyces Cerevisiae
Three mechanisms drive the supplement need
Gastrointestinal disturbances, constipation, dyslipidemia, and micronutrient deficiencies are common side effects in the KD regimen which is often discontinued earlier than recommended because such symptoms are difficult to be controlled 6
If you reconstituted correctly, refrigerated immediately, and injected the full dose subcutaneously, the compound is working
Even if you can absorb B12 but have a deficiency caused by diet, a short course of injections would be the best way to bring levels up quickly, so I imagine that's why you were given it rather than tablets