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Older adults Vitamin B12 deficiency is Vegetarians and vegans Vitamin B12 mainly occurs in animal foods, so people who follow a plant-based diet have a In some cases, a doctor may recommend injections, but Vegetarians or vegans who are pregnant may If the infant is entirely breastfed, they may not consume enough vitamin B12
A lot-matched certificate of analysis can add context, but it does not prove that a product is safe for people
Published human trials report mild gastrointestinal discomfort in 814% of participants and transient headache in 57%, with symptoms typically resolving within 23 weeks
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