is it ok to miss a b12 injection Vitamin shots are injections that deliver high dose of B12 directly into the bloodstream, bypassing the digestive system. They are often used treat B12 deficiency, which can cause fatigue How Long Do Vitamin B12
Description
Instead of passing through the gut only to be filtered out, intramuscular injections and IV drips infuse essential nutrients directly into your bloodstream, achieving 90% absorption

The next day I was still exhausted and would nap on and off throughout the day, my vision was still weird and worse when I would look at the computer and couldnt concentrate for very long on anything without becoming exhausted
It's also essential to monitor your diet and lifestyle habits to support B12 absorption and utilization

Adult Cattle- 1 to 2 mL per 100 pounds of body weight