To maintain its effectiveness, B12 needs to be kept in a cool, dry place, far away from direct sunlight
However, it is freely available online, and sellers mostly target athletes and weightlifters
however, it may be prudent to consider a hypoallergenic diet or the addition of probiotics (live cultures of beneficial bacteria) to the food to assist in recolonizing the bowel into a healthier microbe community
(Some people are concerned about the cyanide molecule in cyanocobalamin , but this form of B-12 is very safe except for individuals with kidney failure.) Vitamin B-12 is commonly sold as pills, but also as quick-dissolving tablets, sublingual tablets, and sprays
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