A vegetarian diet which contains no animal products (including milk products or eggs) does not supply any vitamin B12
However, for a more sustained and significant improvement in chronic fatigue, it often takes several weeks or even a couple of months of regular injections for the body to fully restore its B12 stores and for symptoms to noticeably subside
Of note, an enormous number of the interactions between the genes involved obscure the final outcome
If you qualify for an MSP, it would help pay for part of your Part A and Part B deductibles, coinsurance, and copayments
Salmon: Containing high concentrations of vitamin B12, along with protein, fatty acids, and minerals, salmon is great for your dog