They may require a prescription in some states but many don't for bacteriostatic water specifically
Rather than taking a high dose of one single one on its own, it's better to take a good combination
[76] Ruminants, such as cows and sheep, are foregut fermenters, meaning that plant food undergoes microbial fermentation in the rumen before entering the true stomach (abomasum), thus allowing them to absorb the vitamin B 12 produced by the bacteria
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