Intramuscular injection has proven to be the most effective method for those with vitamin B12 deficiencies or choosing to boost their levels for other reasons, second only to intravenous which is most often administered under emergency situations
Now heres the funny bit The MHRA in responding to our petition stated: Vitamin B12 could not legally be classified as a medicine that can be made available for sale without prescription in pharmacies because it is an injection and because the condition it is licensed to treat, pernicious anaemia, needs a clinician to diagnose it, and monitor its treatment (see point IV above)
According to Ali Kalenak, a registered nurse and founder of Remedie Hydration Therapy in Jackson, Wyoming, most B12 shots come in 1,000 mcg doses
[8] Very high doses may occasionally cause hypokalaemia (low potassium), particularly in patients with severe megaloblastic anaemia when treatment is initiated, necessitating monitoring in hospital settings
Several experiments were relatively short