urine color after vitamin b12 injection Injections Bright yellow urine: Colors, changes,

niacinamide is generally well tolerated

Always good to have a reason I have also had this happen when my folate was low , it may be worth you getting it checked I had self inject my B12 every 4 weeks for the last 20+ (cannot really remember how long accurately), and 2 months ago got a similar 'electric shock tingling' all over my body - head, face, arms, hands, legs, feet etc within a couple of minutes of injecting, which lasted about 3 seconds or so

If you lead a very busy life and cant stop by the office for longer treatments, you may find yourself missing sessions

It is not approved by the FDA or any regulatory authority for human use, and safety and efficacy in humans have not been established outside of any structured clinical trials referenced