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If you are weighing B12 injections against oral supplements, the right choice depends less on which method is "stronger" and more on your body, your diet, and whether you actually have a deficiency

Prevalence rates in multiple sclerosis increase with the patients latitude, and scientific studies have proven that colder climates are harsher for our immune and central nervous systems

On/off cycling here is driven by caution, not by tolerance data: because there is no long-term human safety record, building in scheduled off periods is the conservative research default

Tiaminal B12 shots might help some patients more

2001 Oct;25(10):1442-9