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How Painful is a B12 Injection
Supplements take a minimum of 60 days before becoming effective where as a B12 shot works instantly
Some patients report mild diarrhoea, nausea, or headache following administration, though these symptoms are usually transient
It was designed as a modified version of the C-terminal portion of human growth hormone (hGH)
Oral supplements pass through the digestive tract to be absorbed by the bloodstream, and much of the nutrient is lost in this process
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