b12 injections time to take effect How Long Does It for Vitamin Work? Simple Guide How Quickly Does a B12

I honestly dont think it really matters which route you choose

Lower risk of hitting a nerve, bone, or major blood vessel

In unclear cases, methylmalonic acid and homocysteine levels may be measured

Take a new syringe from the package (syringes are single use only, call or visit us to get refills on syringes when needed) Draw up 0.25ml of the red Vitamin B12 solution (measure from the top of the black plunger). Pull up the skin between the shoulder blades to create a skin tent Insert the whole needle into the skin (pointing downward towards the body), make sure the needle has not exited the skin on the other size of the skin tent