Keep in mind that oral B is not well absorbed in people who truly lack intrinsic factor or have certain GI issues, which is why B is usually injected or given as a high-dose sublingual in those cases
10.1038/nm.4068 37 Ben-ZionZ.KoremN.SpillerT
While they don't prevent illness, when taken together, they may reduce the duration and severity of illnesses like colds
Always consult a licensed healthcare provider before starting any supplement or therapy
doi: 10.1161/01.cir.97.3.237, 106
It is not a drug, food, cosmetic, or dietary supplement , has not been evaluated or approved by the FDA, and is not for human or animal use