Injectable vitamin B12, which can treat significant deficiencies, can cause the following common side effects: mild diarrhea Itching headache dizziness nausea vomiting hot flashes More serious side effects of vitamin B12 injections may include: Irregular heartbeat Heart palpitations Hives or skin rash In rare cases, it can cause severe allergic reactions or anaphylaxis
When calorie intake drops, it is common to notice lower energy, more fatigue, and reduced motivation
Injection site reactions follow a predictable pattern that can be managed through rotation
This frustrating condition is perioral dermatitis, and understanding what it is and what makes it worse is the first step toward clearing it
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These two cover the majority of the human bodys B12 needs