Commonly reported adverse effects are generally mild and may include local injection site reactions when administered via parenteral routes
For a subcutaneous injection into the fatty tissue just under the skin, a much shorter and thinner needle is used
Eating Weight Disord
Here are some common side effects- Common side effects Pain, redness, or swelling at the injection site Mild diarrhea or upset stomach Nausea or vomiting Dizziness Headaches Rare but serious side effects Allergic reaction, including itchiness, hives, difficulty in breathing, or swelling on the face, lips, and throat Irregular heartbeat It is essential to consult with a healthcare provider before starting vitamin B12 injections to ensure they are appropriate for your specific health needs and to receive proper administration guidance
But - clinical trials aren't substantial, it's still not approved for use (indicating more safety data is warranted), most work is pre-clinical and or done with rodents not humans and given its ability to upregulate human growth hormone and angiogenesis (create new blood vessels), someone with a history of cancer would be advised to take serious precautions
Sirtuin-2 Regulates sepsis inflammation in ob/ob mice