do i need a prescription for vitamin b12 injections You Vitamin B12 Dosages: Your GoodRx

However, as with any supplement or treatment, there's potential for side effects, especially when B12 is given in very high doses

This injectable supplement is effective in treating anemias caused by Vitamin B12 deficiency, helping to improve energy levels, appetite, and general well-being in animals

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As most undesirable effects are based on post-marketing spontaneous reporting, frequency estimation is not possible. Immune system disorders Frequency not known: Hypersensitivity reactions, such as sweating, tachycardia, and skin reactions with itching and urticaria. Gastrointestinal disorders Less frequent: Gastrointestinal complaints, such as nausea, vomiting, diarrhoea and abdominal pain. Skin and subcutaneous tissue disorders Less frequent: Cases of acne or eczema have been reported after high doses of Vitamin B12. General disorders and administration site conditions Frequency not known: Injection site reactions. Renal and urinary disorders Less frequent: Chromaturia (reddish urine, appeared during the first 8 hours after an administration and typically resolves within 48 hours).Reporting of suspected adverse reactionsReporting suspected adverse reactions after authorisation of the medicine is important. It allows continued monitoring of the benefit/risk balance of the medicine. Health care providers are asked to report any suspected adverse reactions to SAHPRA via the 6.04 Adverse Drug Reactions Reporting Form, found online under SAHPRAs publications