is there a shortage of b12 injections Injection Dosage and Frequency: 7 Guidelines for Adults Vitamin B12 Deficiency: Symptoms, Causes
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Incorrect Injection Site Documentation : Not specifying the injection site can lead to confusion and incorrect billing

Growth-hormone-related substances and their fragments are an area WADA monitors, and athletes under anti-doping jurisdiction should review the current Prohibited List and maintain documentation for any approved medical use

One Cochrane review found that high-dose oral vitamin B12 supplements (1,000 mcg to 2,000 mcg per day) was as effective for correcting megaloblastic anemia as B12 shots
