Common side effects of B12 injections These B12 effects tend to resolve on their own within a day or two: Injection site reaction, such as mild soreness, redness, or swelling Brief itching or warmth at the injection area A feeling of fullness or pressure in the muscle Mild headache or nausea shortly after the shot These reactions are typically related to the injection itself, not the vitamin
Increased methionine One of the nutrients used in lipotropic injections is methionine, which has several benefits
Your answers to those questions help determine which product characteristics matter most for your specific situation
Rarely, individuals may experience more severe reactions, such as anaphylaxis, which requires immediate medical attention
[1] Transient light-headedness, dizziness, or nausea can occur, especially with high or rapidly infused doses
"Environmental-friendly catalysts learned from Vitamin B 12 -dependent enzymes" (PDF)