Vitamin B12 shots are typically given intramuscularlymeaning the injection is delivered directly into a muscle, most often in the upper arm (deltoid), thigh, or buttock
The frustration is real
Swabs clean injection sites before needle contact occurs
Compression/entrapment: Mechanical focal demyelination then axon loss at anatomical tunnels (carpal tunnel, cubital tunnel, tarsal tunnel, fibular head)
Its recognised sequence is: GlyGluProProProGlyLysProAlaAspAspAlaGlyLeuVal The single-letter representation is GEPPPGKPADDAGLV
Among users who post about side effects, the most-discussed run nausea, fatigue, GI-other, anxiety, diarrhea, constipation, menstrual changes, and reflux/burps, in that order