According to UK product information for licensed B12 preparations, both oral and injectable forms have been used extensively in pregnant women without evidence of harm to the developing fetus when used at recommended doses
Injection sites for extensor tendonitis should be placed subcutaneously on the dorsal (back) wrist surface, approximately 1-2 inches from the point of maximum tenderness
International journal of physiology, pathophysiology and pharmacology, 10(3), 132138 Santra, M., Zhang, Z
Certain situations require prompt evaluation to ensure safe and effective treatment
Dosage and application: Unless otherwise prescribed by the doctor, 1ml vitamin B12 1mg/ml twice a week is usually administered intramuscularly, but also slowly intravenously or subcutaneously at the beginning