Symptoms of Vitamin B12 Deficiency The human liver stores several years worth of vitamin B12, so having a deficiency isnt very common but lots of people have lower levels
This may be more common in patients who: are under-eating recently lost significant weight have poor protein intake are combining multiple wellness therapies simultaneously Injection Site Reactions Because many peptide therapies are injectable, patients may occasionally notice: redness swelling itching bruising tenderness Injection technique and sterile handling matter significantly
1 2 "Office of Dietary Supplements - Dietary Supplement Fact Sheet: Vitamin B12"
The long answer is a bit more scientific
However, like all treatments, they can have side effects, particularly if administered improperly or in excessive amounts
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