does tylenol remove glutathione Acetaminophen Depletes It's a little-known fact, but
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PLoS Pathog 2017, 13, e1006125 10.1371/journal.ppat.1006125
Increased salivary flow dilutes the medication, which may reduce its absorption and therapeutic impact [48]

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I guess it depends on how low each persons individual levels are and how quickly they utilise the B12
