It is administered by a qualified healthcare professional through injection as prescribed by your doctor
When the nerves in the peripheral nervous system become damaged or irritated, the normal transmission of pain signals to the spinal cord and the brain is disrupted
That's why it's important to let your doctor know if you have any of the following conditions before you're prescribed hydroxocobalamin: If you've had an allergic reaction to hydroxocobalamin or any other medicines in the past If you've been diagnosed with low levels of potassium If you have an irregular or fast heartbeat Once you've started taking hydroxocobalamin, you may have some side effects such as pain, swelling, or itchy skin at the point where the syringe was injected
American Journal of Clinical Nutrition, 108(1), 13-22
Sorry rubbish at links, my teenagers aren't here to help me with it
Vitamin B12 injections can quickly help symptoms improve