There are a few common, mild side effects associated with B12 shots, including: Mild diarrhea, itching, nausea and vomiting, dizziness, headaches, and hot flashes Redness or swelling at the injection site Temporary soreness at injection site Serious side effects are rare but require immediate medical attention
They have also been known to increase concentration, memory, and energy levels, support weight loss by improving metabolism, help boost the immune system, have been shown to improve sleep and can help stop some types of hair loss
Cycle context Phase 2 protocols ran 12-24 weeks
If you are very B12 deficient you will notice an increase in energy and a reduction in symptoms of tingling, numbness, or twitching/zaps within 24 hours