Glossary of Terms References and Further Reading BioMed Research International
Vitamin B12 deficiency may occur in certain health conditions, such as intestinal/stomach problems, poor nutrition, cancer, HIV infection, pregnancy, old age, alcoholism
Suskind, and Christopher J
Some users report improved recovery and energy levels, though these effects are less well-documented than the body composition benefits
An 8-week cycle typically pairs with a 4-week break
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