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 11 Symptoms of Dangerous B12

This helps it get absorbed better

How often should B12 injections be administered

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

Some products may interact with hydroxocobalamin