Deficiency can cause fatigue, brain fog, and mood changes
Yesa blood test can measure your B12 levels
Plant-Based Sources Plant-based foods also offer riboflavin and support diverse dietary needs: Leafy greens : Spinach, kale, broccoli Nuts and seeds : Almonds, sunflower seeds Whole grains : Brown rice, oats, quinoa According to the National Institutes of Health Office of Dietary Supplements , the Recommended Daily Allowance (RDA) for riboflavin is 1.1 mg for women and 1.3 mg for men [NIH ODS]
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