how often is vitamin b12 injections given What Are Injections? And Are They Safe? B12 Injection Dosage and Frequency:

Oral B12 supplements are absorbed at roughly 1 to 5% in healthy adults, and even less in people with low intrinsic factor, atrophic gastritis, or gut absorption issues

However, some people, especially those with specific genetic mutations, might not absorb it as efficiently

bound to TC Excessive vitamin B 12 in the circulation, e.g., such as after injections, usually exceeds the binding capacity of TC and is excreted in the urine

Vitamin B-Complex Injection Uses (Urdu):

The Injectors Role: How Technique Impacts Restylane Bruising While patient preparation is vital, the injectors skill and technique play an equally, if not more, crucial role in minimizing Restylane bruising