can b12 injections cause bruising Bruise from injection? I only recently started T and am worried I messed up. (Intramuscular, left thigh) : r/ftm bruising from b12 injection Why

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Certain groupsincluding vegetarians, older adults, and those with medical conditions affecting absorptionare at greater risk for deficiency

Because of the low toxicity of vitamin B 12 , no tolerable upper intake level (UL) has been set by the US Food and Nutrition Board (21)

[2] Pharmacokinetic studies demonstrate rapid systemic distribution with peak plasma levels occurring within 30-60 minutes of intramuscular injection, followed by extensive hepatic storage and enterohepatic recycling

Before researchers can conduct meaningful evaluations, they often begin with characterization studies involving 5-Amino-1MQ and other specialized research compounds