do b12 injections cause headaches I've had a migraine since Sept 4th. I took a injection that day (prescribed by my doctor) so I'm wondering if it's related or coincidence. I'm scared to take another one Headache After B12 Shot: Why

Yes, some people might need to be careful or avoid Vitamin B12 shots

Cognitive Difficulties : Memory loss, confusion, and trouble focusing

You can give the shot at a 90-degree angle if 2 inches of skin can be grasped between your thumb and first (index) finger

What is Tiaminal B12 injection, and when is it used

For example, those with severe deficiencies might need 1,000 mcg weekly, while others might only need 100 mcg monthly

Dosage, Concentration, Route of Administration Dosage : Seek advice from an appropriately qualified and licensed physician, medical director, or other healthcare provider Concentration : 2mg/ml Route of Administration : IV/IM/SQ Resources: Precautions/Side Effects Hydroxocobalamin injections are contraindicated in people with low blood potassium or allergies to vitamin B12 or cobalt