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The nickname references the Marvel character known for rapid regeneration
This bypasses the need for absorption in the digestive tract, and it ensures that an adequate amount of vitamin B12 reaches the bloodstream
For researchers conducting long-term studies or those with needle aversion, these practical considerations may outweigh the bioavailability difference
There have been times when sterile water has been in short supply
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Insert the needle at a 45 to 90 degree angle (90 degrees if you have adequate subcutaneous fat, 45 degrees if you are leaner)
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