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Description
Choline is the major precursor of betaine, and it is used by the kidneys to maintain water balance and by the liver as a source of methyl-groups for methionine formation

Because its a smaller muscle compared to others, its best for the standard B12 dosage

Use as directed - follow the instructions supplied with the product being reconstituted, and wipe the stopper with a fresh alcohol swab before each access
So, should you sweat it when your pee starts looking like a rainbow