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It is derived from a protein naturally found in the stomach, which contributes to its strong safety profile
Cell 36, 794804
Its also poorly absorbed by the digestive system which means you wont get many of the benefits if you can manage to take it
One study found lower vitamin B 12 levels in the cerebrospinal fluid of patients with Alzheimer's disease than in patients with other types of dementia, though blood levels of vitamin B 12 did not differ (65)
If for any reason, the physician does not approve, you will be fully refunded.
A cloudy solution should be discarded, not rescued
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