Since vitamin B12 is still necessary for bodily health, deficiency in this key vitamin can lead to a number of negative symptoms, including: However, since vitamin B12 is necessary for so many vital things, symptoms can vary from individual to individual
Its key advantages are prolonged sterility (multi-dose use) and slight anesthetic effect, but it must be used correctly: always dilute drugs per guidelines, ensure the final solution is isotonic, and heed contraindications (no neonates, no intrathecal use)
Honestly, this is probably not the moment to start sourcing it from unvetted places
Metformin and risk of vitamin B12 deficiency: new advice
This contrasts with TB-500, which is explicitly WADA-prohibited under S2