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Oral supplements have 2.4 to 2.6 mcg of vitamin B12
Subcutaneous may offer slightly more consistent plasma levels, but the practical difference is marginal given the compounds short half-life requiring daily dosing either way
Muscle cramps are typically triggered by muscle exertion or sustained muscle contraction, distinguishing them from muscle spasms
Additionally, if you prepare ahead of time and speak to a doctor before getting a vitamin B12 shot, youll be able to isolate the risk of any serious drawbacks, like allergic reactions
The results showed that while both methods are effective, sublingual vitamin B12 is actually more efficient in raising b12 levels than injections , especially in patients with very low levels
Scientific References Frequently Asked Questions How quickly will I feel better after starting B12 injections
