Ideal Candidates You might be a good candidate if you: Feel constantly tired or sluggish Have difficulty focusing Follow a vegetarian or vegan diet Have a known B12 deficiency When to Avoid It Those with certain allergies or medical conditions should speak with a provider before starting injections
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For those who dont consume animal foods, such as vegetarians and vegans, there are plant-based sources of vitamin B12 available, including nutritional yeast, fortified foods, cereals, mushrooms, and certain types of algae
The result of all three mechanisms together is that biological sex affects BAC in a compounding way each factor independently raises the BAC a woman reaches from a given drink, and all three occur simultaneously
Getting the dose right matters: too little may do nothing, while more than needed wastes product without clearly improving results