primarily animal products
Usually, these injections are given into the muscle or vein once a week or once a month, based on the condition
Congenital vitamin B12 transport disorders
The most common side effects of B12 injections are mild and temporary, including pain, redness, or swelling at the injection site, mild nausea or diarrhea, headache, dizziness, and itching near the injection area
For most vegans, those options work without ever needing an injection
While these injections show promise, it's crucial to remember that they work best as part of a comprehensive approach to health, including a balanced diet and regular exercise