Oral makes more sense when you travel a lot for work, hate needles, or want a lower-friction way to support endurance and recovery during long winter blocks
A later study by the same research group was limited to children with abnormal methylation or GSH:GSSG showed that it had a significantly lower level in autistic disorder than in controls [48], however, a subsequent study of children with autism spectrum disorders showed that it was significantly higher than in controls [77]
Martin B, Shin Y-K, White CM, Ji S, Kim W, Carlson OD, et al
Instead of triggering a hormonal response, it acts directly on metabolic enzymes at the cellular level
B12 Injection Treatment Protocols and Schedules Fixing Vitamin B12 deficiency needs a clear plan