How to Self Inject Vitamin B12 at Home The Sanctuary Wellness Institute Walgreens Timed Release Vitamin B12 1000 mcg Tablets (300 days) Walgreens Koch Koch & Carlisle Plastic Surgery & Spa has partnered with Skin Body Soul to give current patients the opportunity to use remaining Skin Body Soul gift cards and select pre paid B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics