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Preventing Contamination: The 28-day limit is a safety measure
as I've basically been back and forth the doctors and hospitals for years
Tablets just as effective Over-the-counter B12 tablets are a fraction of the cost of shots, and have been shown in a British-Canadian study to work just as well for most people, although some people with digestive conditions may have difficulty absorbing the vitamin in tablet form
Dosing protocols, treatment regimens, and administration instructions are out of scope and not provided in any form
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