From my experience as a medical professional, B12 injections do play a role in improving energy levels, especially for those who are B12 deficient
Most patients notice improvements in energy, concentration and mood within days to a week of their first injection
Oral versus intramuscular administration of vitamin B12 for vitamin B12 deficiency in primary care: a pragmatic, randomised, non-inferiority clinical trial (OB12)
You can also see below some special (proprietary) peptides like LIVV FOREVER. Its not just that any of these peptide preps are unproven, but get a hold of how much an injection costs
MEDICAL & LEGAL DISCLAIMER The information contained in this article is intended for licensed healthcare providers and qualified medical professionals only
They can provide guidance on dosage, potential side effects, and interactions with other medications