Commit to 16 to 24 weeks minimum
Whenever possible, if you suspect B12 deficiency, its a good idea to get in touch with a veterinarian who may conduct a blood test to determine whether this is actually the case
PMID: 19319546
The research supports both approaches depending on what you are optimizing for
People looking to enhance their fat metabolism
Contraindications of Vitamin B12 Injections Vitamin B12 injection is contraindicated in pregnant and lactating women, liver disease, kidney disease, infection, iron deficiency, folic acid deficiency, Lebers disease, hypokalemia, polycythemia vera, gout, folic acid deficiency, the patient undergoing treatment that has a direct effect on bone marrow, an allergy to medication, vitamin, preservative or cobalt