Common side effects may include: Mild injection-site reactions (redness, soreness, itching) Upset stomach or nausea Headache Mild anxiety or restlessness Rarely, allergic reactions If you experience difficulty breathing, severe dizziness, or hives, seek medical attention immediately
Oral vitamins must get broken down by the GI tract (through the stomach, and intestines) and then go through the liver for metabolizing
Nonetheless, it is getting frequently prescribed for increasing muscle mass and putative, unproven , anti-aging benefit
In addition to cognitive function and energy levels, B12 supplements have been associated with a range of other health benefits
Characterization of preparations of radioiodinated hCG [PMID: 4373415] Laboratory literature summary: Characterization of preparations of radioiodinated hCG