B12 deficiency self treatment plan : r B12_Deficiency How Often Can I Take B12 Injections? Vitamin B12 Recommendations: Updated Vegan Health B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics A little insight to the importance of the b12 injections. My client hadn't been feeling well & had some bloods done with her GP. The results identified a severe deficiency in b12. Book in for your Vitamin B12 injections privately. Booster dose is 6 injections over 2 weeks for 150, then one injection every 8 12 weeks for 30 depending on your symptoms returning!!! Very