Risks and Side Effects While generally safe, vitamin B12 injections can have side effects or risks, such as: Mild pain, swelling, or redness at the injection site Dizziness, headache, or nausea Allergic reactions (rare) Hypokalemia (low potassium levels) in individuals with severe deficiency undergoing treatment People with allergies to cobalt or who have Lebers disease should avoid B12 injections unless specifically advised by a doctor
Expert Opin Investig Drugs (2020) 29(5):47582
The glutathione and citrulline supplement market is driven by rising global interest in preventive wellness, antioxidant therapy, and performance nutrition
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