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Symptoms of Combined Vitamin D and Vitamin B12 Deficiency Vitamin D and B12 deficiencies can occur independently
B12 levels can fluctuate, and symptoms may appear before levels fall outside the standard range
Inject subcutaneously at a clean, rotated site abdomen, thigh, or upper arm For how to manage any side effects during titration, see our [semaglutide side effects guide](/guides/semaglutide-side-effects-how-to-manage)