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Common syringe sizes for B12 injections are 1ml to 3ml

Research published in Toxicology and Applied Pharmacology found that copper supplementation above 10mg daily (roughly 5 the RDA) can disrupt zinc homeostasis and trigger oxidative stress in hepatic tissue

Blood testing is the recommended option for concerning symptoms of anaemia or worsening health

Many patients or their family members are capable of giving IM injections after appropriate training

Cons Absorption may vary between individuals

Always consult a healthcare professional to teach you the proper safety and delivery methods for injecting vitamin B12 and B-Complex