Lets do my first B12 injection together This is something Ive been nervous about for a long time, but today I finally did itand it honestly wasnt bad at all. I used the Union Medico needle guide Best Vitamin B12 Injection Sites: Where to Inject B12 PA Relief B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics How Much Vitamin B12 for Nerve Pain: UK Dosage Guide Bolt Pharmacy B12 Injections Vitamin B12 Therapy Hanover, MA ALDA Aesthetics