This is more common with larger injection volumes, which is relevant if you reconstituted your 60 mg vial at a lower concentration like 5 mg/mL
Oral B12 looks cheap, but if your body absorbs very little of each pill because of low stomach acid or a gut condition, much of that spending does not translate into results, and you keep buying bottle after bottle
At the same time, AOD-9604 has been investigated for its capacity to control inflammation
10.1046/j.1365-2796.2003.01067.x
Upon examination, it was reported that the corticosteroid appeared to significantly worsen the muscle damage in the murine models
In 2015, another double-blind RCT reported significant improvements in pain associated with aphthous ulcers with a B12 ointment compared with a B12-free ointment